https://wiki.jlab.org/casa-adminwiki/api.php?action=feedcontributions&user=Anichols&feedformat=atomAdministrative - User contributions [en]2021-02-28T01:44:09ZUser contributionsMediaWiki 1.26.0https://wiki.jlab.org/casa-adminwiki/index.php?title=2018-07-06&diff=8242018-07-062018-07-09T18:24:33Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata <br>'''<br />
''No report.'' Accelerator Division Office.<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata (Interim CASA Department Head)'''<br><br />
Todd Satogata<br />
Previous two weeks (June 25-July 6)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance/HE/R&D meetings<br />
- JLEIC: Peter McIntyre meeting (Jun 26)<br />
- JLEIC: Summer student work on Booster simulations, training<br />
- JACoW: JBoD telecon (Jun 29), post/review meeting minutes<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: Director Ops review (Jun 26-28)<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
Next two weeks (July 9-July 20)<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: Audrey move transition, Li-Shi meeting (Jul 16)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance/HE/R&D meetings<br />
- JLEIC: Complete Booster vacuum tech note calculations<br />
- JLEIC: Summer student work on Booster simulations, training<br />
- IPAC18: Finalize proceedings, IPAC'18 delegate survey report<br />
- JACoW: Publishing script updates, fix PDF index of PAC'95<br />
- ODU: Randy PhD defense (Jul 12)<br />
<br />
Alex Bogacz<br />
Previous two weeks (June 25-July 6)<br />
- PERLE: Attend PERLE collaboration meeting (Jun 26, Orsay)<br />
- PERLE: Attend LHeC/FCCeh/PERLE workshop (Jun 27-29, Orsay)<br />
- PERLE: Present two talks at above meetings<br />
- ADMIN: Attend ARIES Muon Collider Workshop (Jul 1-3, Padova)<br />
- ADMIN: Present two talks at ARIES Muon Collider Workshop<br />
Next two weeks (July 9-July 20)<br />
- VACATION: Jul 9-Jul 13<br />
- ADMIN: Phys Rev Accel Beams paper review<br />
<br />
Rui Li<br />
Previous two weeks (June 25-July 6)<br />
- JLEIC: Presented the LCBI for Frank's new HOM coupler design at<br />
the impedance meeting.<br />
- JLEIC: Assessment of the behavior of collective effects in<br />
higher current regime of e-beam (E>10GeV), in responding to<br />
Yuhong's question for the high-energy JLEIC.<br />
- JLEIC: Collected the e-ring new parameters from Fanglei,<br />
Vasiliy will later send me new parameters for the p-ring. These<br />
may change the behavior of LCBI which is very sensitive to<br />
parameters.<br />
- JLEIC: Calculated growth time for the transverse coupled bunch<br />
instability (TCBI) for Frank's new HOM design using ZAP, and<br />
see no improvement of the growth rate for the new HOM coupler<br />
design from that of the old one.<br />
- JLEIC: Working on the Mathematica calculation of TCBI, so as to<br />
identify the HOM resonance that gives dominant contribution to<br />
growth rate, so the RF people can work on mitigation of these<br />
HOM.<br />
Next two weeks (July 9-July 20)<br />
- JLEIC: Finish my part of the ICFA newsletter writing<br />
- JLEIC: Continue to finish the Mathematica calculation of TCBI<br />
and its comparison with ZAP<br />
- JLEIC: Summarize the LCBI and TCBI results for exchange with<br />
the RF people<br />
- JLEIC: Estimate the resistive wall impedance in JLEIC e-ring<br />
and ion ring<br />
<br />
Edy Nissen<br />
Previous two weeks (June 25-July 6)<br />
- JLEIC: Answered LDRD questions posed by reviewers<br />
- JLEIC: Created presentation slides for LDRD review<br />
- JLEIC: Determined that the acceleration anomaly in synergia is<br />
caused by space charge, not bucket shape changes or higher order<br />
nonlinear dispersions.<br />
- JLEIC: Gave LDRD Presentation<br />
- VACATION: June 25, July 2-3<br />
Next two weeks (July 9-July 20)<br />
- JLEIC: Work on booster working point simulations to eliminate<br />
the acceleration anomaly<br />
- JLEIC: Work with summer student on injection modeling for the<br />
booster<br />
<br />
Chris Tennant<br />
Previous two weeks (June 25-July 6)<br />
- VACATION: July 5-6<br />
- JLEIC: working through issues with cooler to get a consistent S2E<br />
- JLEIC: re-tune ERL arc to accept longer bunch from injector<br />
- JLEIC: mBI analysis of cooler "Simple Arc"<br />
- PERLE: wrap up PERLE TN<br />
Next two weeks (July 9-July 20)<br />
- VACATION: July 16-19<br />
- JLEIC: seek counsel for path forward with S2E<br />
- JLEIC: pCDR writing<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
Fanglei Lin<br />
*Provided JLEIC electron polarization contribution to the ICFA Beam Dynamics Newsletter.<br />
*Provided the new electron ring parameters to Tim's group, Leigh, Rui and Shaoheng.<br />
*Working with the student on the storage ring cooler.<br />
*Miscellaneous: attended a meeting with Peter McIntyre, attended the JLEIC R&D meeting, attended JLEIC cooler project kickoff meeting, attended JLEIC general meeting.<br />
<br><br />
Vasiliy Morozov<br />
*My main activities in the past two weeks were:<br />
**Geometry tagging LDRD: simulations and data analysis.<br />
**Ion beam loss studies: work with Hannah on beam loss simulations<br />
**Writing of ICFA news letter contribution<br />
*Main activities planned for the next two weeks:<br />
**Preparation of DoE R&D quarterly report<br />
**Ion collider ring design<br />
**Beam loss studies<br />
**Writing of ICFA news letter and pCDR<br />
<br><br />
Amy Sy<br />
**Prepared and gave presentation on LDRD proposal "Laser driven polarized D source for JLEIC" at LDRD review.<br />
**Working on Skew PIC closeout report.<br />
**Starting simulations of transverse feedback system in the ion collider ring. Using Elegant lattice with injection optics to study effects of injection errors on beam stability.<br />
<br><br />
Guohui Wei<br />
*On Leave<br />
<br><br />
Yuhong Zhang<br />
*Continued development of HE-JLEIC design concept<br />
*Gave a presentation at LDRD proposal review<br />
*Started R&D activities on two FOA grants (bunched beam electron experiment and micro-bunching based coherent electron cooling)<br />
*Continued writing pre-CDR<br />
*Started editing of ICFA beam dynamics newsletter<br />
<br><br />
<br />
----<br />
'''Computational Physics - Y. Roblin'''<br><br />
Kirsten Deitrick:<br />
*Last two weeks:<br />
**Magnetized beam (LEFR PoP):<br />
*:-correct magnetization damage after FEL booster with off-axis travel through skew quad (prepping to run/optimize on cluster)<br />
*:-start looking at magnetization preservation through merger designs<br />
**Straight Merger at CBETA:<br />
*:-finish data analysis<br />
*:-begin simulations<br />
*:-present preliminary results in JLEIC R&D meeting<br />
**eCloud:<br />
*:-finish text for preCDR<br />
*:-get other cold section magnet properties from Vasiliy/Fanglei<br />
**Impedance:<br />
*:-best/worst case for electron ring impedance scenario<br />
*:-meeting (present above + feedback kickers in various machines)<br />
**Meetings:<br />
*:-Impedance<br />
*:-Cooler (x2)<br />
*:-JLEIC (x1)<br />
**Misc:<br />
*:-DOE Travel to China brief reading<br />
*:-Introduction for Summer Lecture Series (x2), subbing for Geoff Krafft<br />
*:-Raemaad GPT help (Geoff's student)<br />
*Next two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-look at 3D FEL booster optimization results<br />
*:-magnetization preservation through merger designs<br />
**Straight Merger at CBETA:<br />
*:-continue simulations<br />
*:-explain discrepancies (qualitative behavior matches relatively well)<br />
**eCloud:<br />
*:-simulate eCloud in quad/sextupole/drift of ion ring using provided parameters (mostly to show density highest in dipoles)<br />
**Meetings:<br />
*:-Cooler (x2)<br />
*:-JLEIC (x2)<br />
<br><br />
Yves Roblin:<br />
*Vacation 7/2 -7/6<br />
*JLEIC:<br />
*:-pCDR writing<br />
*:-ICFA paper writing<br />
*:-gear changing simulations<br />
*CEBAF:<br />
*:-Bteam<br />
*:-prepare ATLIS for August half pass run<br />
*:-meeting with Hall A to discuss schedule for the half pass into hall A<br />
*:-APEX procedural development and planning<br />
*:-model improvement, redoing all the arcs with proper K1 and constraints<br />
*Next two weeks: <br />
*JLEIC:<br />
*:-pCDR<br />
*:-report for FOA 17 supplemental<br />
*CEBAF:<br />
*:-model work, coordinating activity for restart<br />
*:-preparing for July 26th OPS prestart talk<br />
<Br><br />
Dennis Turner:<br />
*Last two weeks:<br />
**Presented ced2elegant and ArcSteer to BTeam 6/26<br />
**ArcSteer: <br />
*:-Odds and ends from BTeam discussions.<br />
*:-Completed templates for all 10 arcs and 0R.<br />
**rayTrace:<br />
*:-Discussed requirements with Tief and Yves.<br />
*:-Began work on data collection. Studied existing rayTrace code.<br />
**Minor bugfixes and documentation updates for ced2elegant, etc.<br />
*Out of town 6/29 to 7/1.<br />
*Sick 7/2 to 7/3.<br />
*Holiday 7/4.<br />
*Next two weeks:<br />
**Continue work on rayTrace.<br />
**Continue to get dispersionTool ready for further testing and release.<br />
**Test ArcSteer in 0R if the opportunity arises.<br />
<br><br />
He Zhang:<br />
*JSPEC Development<br />
Tested the codes that calculates the electron charge density inside an arbitrary electron bunch. The electron bunch is represented by two million particles, which are generated randomly with Gaussian distribution. The electron are loaded into memory and then distributed into a tree structure of boxes. The maximum number of electrons in each childless box is adjustable. This process only needs to be performed once as long as the electron charge distribution is assumed unchanged during the cooling process. The ions are put into a regular grid and the grid density is adjustable. (A regular grid is used only for testing purpose. In real simulation, ions can have any distribution.) Ions are distributed into the boxes and the charge density around the ion is calculated by the electron number inside the box divided by the box volume. Electron density is plotted for a few different grid sizes and the results show the algorithm works as expected. Numerical noises are noticed in the electron density calculation, which is as expected, and the noises reduce as the grid size becomes smaller. Now it is still not clear how much it will affect the cooling rate calculation. It will be tested later.<br />
<br />
I am working on fitting the above electron density calculation code into JSPEC for cooling simulations. It needs more changes in the code than I originally expected. A new model of the electron beam has been added. But several interfaces between several modules have to be revised, because in this model the relative electron speed and temperature can change. The UI needs to be updated, too. This work is still in process.<br />
<br />
*Others<br />
*:-pCDR writing: Converted the previous writing into Latex and edited it again.<br />
*:-ICFA writing: Wrote about mulita-stage cooling strategy and cooling simulation results for both the proton beam and lead ion beam, based on my IPAC’18 paper and pCDR writing.<br />
*:-Tech report: I am writing a tech report about the TPSA/DA package that I developed based on Dr. Lingyun Yang’s code.<br />
*:-ICAP trip is approved. I was told by Prof. Berz that my talk should be arranged in the first two days. I plan to stay two nights there. <br />
*:-NERSC account: submitted the NERSC AUP, trying to re-activate my account.<br />
*:-Reviewed a paper for SIVP.<br />
*Work plan in the following two weeks<br />
*:-Continue writing and polishing the pCDR report<br />
*:-Test, finish, and document the JSPEC package of cooling with arbitrary electron beam<br />
*:-Test the turn-by-turn tracking packge for JSPEC.<br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan'''<br><br />
Kevin Jordan<br />
*Continued efforts on the testing of LCLS-II cryomodules in the LERF. The cable termination should begin this week - effort has suffered due to lack of man power & priority during the SAD.I continue to inventory parts for mechanical assembly of bridging components & end cans.<br />
*I have been working with Steve Shuring & Jonathan Creel to ensure the LERF transfer line, 1/4 & full cryomodule get cleaned up & cooled down in the next couple weeks when the CHL is reconfigured for operations. The heaters & waveguide needed to be reconfigured from F100 to C20 style cryomodule.<br />
*Joined Joe on trip to RadiaBeam, this was a preliminary design review of the SBIR-II high speed, high power wire scanner<br />
<br><br />
Joe Gubeli<br />
*Worked on a new SLM diagnostic for ARC 7. The layout is nearly complete and am waiting on a few specifications from Mike T to finish the design.<br />
*Had a progress meeting with Radiabeam on the high power, high speed wire scanner. The meeting was very productive. The design is fairly mature with some modifications requested. A timeline and installation location for the various tests were discussed as well.<br />
<br><br />
Michael Tiefenback<br />
*More followup on magnet integrator tasks, particularly concerning mis-wired quadrupoles. (Two more were found.) We have to be able to _know_ that we're done on this.<br />
*continuing assessment (with operator Brandi Cade) of cryogenic heat load calibration vs. JT setting to characterize the linac heat load. The benefit will be to guide a better match of RF heat (Q0 dissipation) against resistive heat so that RF state transitions are more transparent to CHL operation. Still looks promising.<br />
*Continuing on requirements for diagnostic optimization for SLMs in Arc7A and elsewhere. Still investigating resolution issues with Gubeli and hardware.<br />
*Preparation for CLAS12 accelerator update talk 10 July.<br />
<br><br />
----<br />
'''LERF - S. Benson'''<br><br />
*June 25-July 6<br />
**Continued to work on pCDR<br />
**Prepared operating cost estimates for LERF for Operations review<br />
**Attended the operations review for talks relevant to JLEIC and LERF.<br />
**Held kick-off meeting for FOA activities and posted minutes<br />
**Reviewed and rated LDRD proposals. Attended part of the LDRD Review <br />
**No cooler ring meeting due to Ops review.<br />
<br><br />
*July 9-20<br />
**Arrange for collaboration with HZDR for Elbe II facility.<br />
**Review new ASE and revise LOD to match<br />
**Complete quarterly report for 2018 FOA project.</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-07-06&diff=8232018-07-062018-07-09T18:20:48Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata <br>'''<br />
''No report.'' Accelerator Division Office.<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata (Interim CASA Department Head)'''<br><br />
Todd Satogata<br />
Previous two weeks (June 25-July 6)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance/HE/R&D meetings<br />
- JLEIC: Peter McIntyre meeting (Jun 26)<br />
- JLEIC: Summer student work on Booster simulations, training<br />
- JACoW: JBoD telecon (Jun 29), post/review meeting minutes<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: Director Ops review (Jun 26-28)<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
Next two weeks (July 9-July 20)<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: Audrey move transition, Li-Shi meeting (Jul 16)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance/HE/R&D meetings<br />
- JLEIC: Complete Booster vacuum tech note calculations<br />
- JLEIC: Summer student work on Booster simulations, training<br />
- IPAC18: Finalize proceedings, IPAC'18 delegate survey report<br />
- JACoW: Publishing script updates, fix PDF index of PAC'95<br />
- ODU: Randy PhD defense (Jul 12)<br />
<br />
Alex Bogacz<br />
Previous two weeks (June 25-July 6)<br />
- PERLE: Attend PERLE collaboration meeting (Jun 26, Orsay)<br />
- PERLE: Attend LHeC/FCCeh/PERLE workshop (Jun 27-29, Orsay)<br />
- PERLE: Present two talks at above meetings<br />
- ADMIN: Attend ARIES Muon Collider Workshop (Jul 1-3, Padova)<br />
- ADMIN: Present two talks at ARIES Muon Collider Workshop<br />
Next two weeks (July 9-July 20)<br />
- VACATION: Jul 9-Jul 13<br />
- ADMIN: Phys Rev Accel Beams paper review<br />
<br />
Rui Li<br />
Previous two weeks (June 25-July 6)<br />
- JLEIC: Presented the LCBI for Frank's new HOM coupler design at<br />
the impedance meeting.<br />
- JLEIC: Assessment of the behavior of collective effects in<br />
higher current regime of e-beam (E>10GeV), in responding to<br />
Yuhong's question for the high-energy JLEIC.<br />
- JLEIC: Collected the e-ring new parameters from Fanglei,<br />
Vasiliy will later send me new parameters for the p-ring. These<br />
may change the behavior of LCBI which is very sensitive to<br />
parameters.<br />
- JLEIC: Calculated growth time for the transverse coupled bunch<br />
instability (TCBI) for Frank's new HOM design using ZAP, and<br />
see no improvement of the growth rate for the new HOM coupler<br />
design from that of the old one.<br />
- JLEIC: Working on the Mathematica calculation of TCBI, so as to<br />
identify the HOM resonance that gives dominant contribution to<br />
growth rate, so the RF people can work on mitigation of these<br />
HOM.<br />
Next two weeks (July 9-July 20)<br />
- JLEIC: Finish my part of the ICFA newsletter writing<br />
- JLEIC: Continue to finish the Mathematica calculation of TCBI<br />
and its comparison with ZAP<br />
- JLEIC: Summarize the LCBI and TCBI results for exchange with<br />
the RF people<br />
- JLEIC: Estimate the resistive wall impedance in JLEIC e-ring<br />
and ion ring<br />
<br />
Edy Nissen<br />
Previous two weeks (June 25-July 6)<br />
- JLEIC: Answered LDRD questions posed by reviewers<br />
- JLEIC: Created presentation slides for LDRD review<br />
- JLEIC: Determined that the acceleration anomaly in synergia is<br />
caused by space charge, not bucket shape changes or higher order<br />
nonlinear dispersions.<br />
- JLEIC: Gave LDRD Presentation<br />
- VACATION: June 25, July 2-3<br />
Next two weeks (July 9-July 20)<br />
- JLEIC: Work on booster working point simulations to eliminate<br />
the acceleration anomaly<br />
- JLEIC: Work with summer student on injection modeling for the<br />
booster<br />
<br />
Chris Tennant<br />
Previous two weeks (June 25-July 6)<br />
- VACATION: July 5-6<br />
- JLEIC: working through issues with cooler to get a consistent S2E<br />
- JLEIC: re-tune ERL arc to accept longer bunch from injector<br />
- JLEIC: mBI analysis of cooler "Simple Arc"<br />
- PERLE: wrap up PERLE TN<br />
Next two weeks (July 9-July 20)<br />
- VACATION: July 16-19<br />
- JLEIC: seek counsel for path forward with S2E<br />
- JLEIC: pCDR writing<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
Fanglei Lin<br />
*Provided JLEIC electron polarization contribution to the ICFA Beam Dynamics Newsletter.<br />
*Provided the new electron ring parameters to Tim's group, Leigh, Rui and Shaoheng.<br />
*Working with the student on the storage ring cooler.<br />
*Miscellaneous: attended a meeting with Peter McIntyre, attended the JLEIC R&D meeting, attended JLEIC cooler project kickoff meeting, attended JLEIC general meeting.<br />
<br><br />
Vasiliy Morozov<br />
*My main activities in the past two weeks were:<br />
**Geometry tagging LDRD: simulations and data analysis.<br />
**Ion beam loss studies: work with Hannah on beam loss simulations<br />
**Writing of ICFA news letter contribution<br />
*Main activities planned for the next two weeks:<br />
**Preparation of DoE R&D quarterly report<br />
**Ion collider ring design<br />
**Beam loss studies<br />
**Writing of ICFA news letter and pCDR<br />
<br><br />
Amy Sy<br />
**Prepared and gave presentation on LDRD proposal "Laser driven polarized D source for JLEIC" at LDRD review.<br />
**Working on Skew PIC closeout report.<br />
**Starting simulations of transverse feedback system in the ion collider ring. Using Elegant lattice with injection optics to study effects of injection errors on beam stability.<br />
<br><br />
Guohui Wei<br />
*On Leave<br />
<br><br />
Yuhong Zhang<br />
*Continued development of HE-JLEIC design concept<br />
*Gave a presentation at LDRD proposal review<br />
*Started R&D activities on two FOA grants (bunched beam electron experiment and micro-bunching based coherent electron cooling)<br />
*Continued writing pre-CDR<br />
*Started editing of ICFA beam dynamics newsletter<br />
<br><br />
<br />
----<br />
'''Computational Physics - Y. Roblin'''<br><br />
Kirsten Deitrick:<br />
*Last two weeks:<br />
**Magnetized beam (LEFR PoP):<br />
*:-correct magnetization damage after FEL booster with off-axis travel through skew quad (prepping to run/optimize on cluster)<br />
*:-start looking at magnetization preservation through merger designs<br />
**Straight Merger at CBETA:<br />
*:-finish data analysis<br />
*:-begin simulations<br />
*:-present preliminary results in JLEIC R&D meeting<br />
**eCloud:<br />
*:-finish text for preCDR<br />
*:-get other cold section magnet properties from Vasiliy/Fanglei<br />
**Impedance:<br />
*:-best/worst case for electron ring impedance scenario<br />
*:-meeting (present above + feedback kickers in various machines)<br />
**Meetings:<br />
*:-Impedance<br />
*:-Cooler (x2)<br />
*:-JLEIC (x1)<br />
**Misc:<br />
*:-DOE Travel to China brief reading<br />
*:-Introduction for Summer Lecture Series (x2), subbing for Geoff Krafft<br />
*:-Raemaad GPT help (Geoff's student)<br />
*Next two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-look at 3D FEL booster optimization results<br />
*:-magnetization preservation through merger designs<br />
**Straight Merger at CBETA:<br />
*:-continue simulations<br />
*:-explain discrepancies (qualitative behavior matches relatively well)<br />
**eCloud:<br />
*:-simulate eCloud in quad/sextupole/drift of ion ring using provided parameters (mostly to show density highest in dipoles)<br />
**Meetings:<br />
*:-Cooler (x2)<br />
*:-JLEIC (x2)<br />
<br><br />
Yves Roblin:<br />
*Vacation 7/2 -7/6<br />
*JLEIC:<br />
*:-pCDR writing<br />
*:-ICFA paper writing<br />
*:-gear changing simulations<br />
*CEBAF:<br />
*:-Bteam<br />
*:-prepare ATLIS for August half pass run<br />
*:-meeting with Hall A to discuss schedule for the half pass into hall A<br />
*:-APEX procedural development and planning<br />
*:-model improvement, redoing all the arcs with proper K1 and constraints<br />
*Next two weeks: <br />
*JLEIC:<br />
*:-pCDR<br />
*:-report for FOA 17 supplemental<br />
*CEBAF:<br />
*:-model work, coordinating activity for restart<br />
*:-preparing for July 26th OPS prestart talk<br />
<Br><br />
Dennis Turner:<br />
*Last two weeks:<br />
**Presented ced2elegant and ArcSteer to BTeam 6/26<br />
**ArcSteer: <br />
*:-Odds and ends from BTeam discussions.<br />
*:-Completed templates for all 10 arcs and 0R.<br />
**rayTrace:<br />
*:-Discussed requirements with Tief and Yves.<br />
*:-Began work on data collection. Studied existing rayTrace code.<br />
**Minor bugfixes and documentation updates for ced2elegant, etc.<br />
*Out of town 6/29 to 7/1.<br />
*Sick 7/2 to 7/3.<br />
*Holiday 7/4.<br />
*Next two weeks:<br />
**Continue work on rayTrace.<br />
**Continue to get dispersionTool ready for further testing and release.<br />
**Test ArcSteer in 0R if the opportunity arises.<br />
<br><br />
He Zhang:<br />
*JSPEC Development<br />
Tested the codes that calculates the electron charge density inside an arbitrary electron bunch. The electron bunch is represented by two million particles, which are generated randomly with Gaussian distribution. The electron are loaded into memory and then distributed into a tree structure of boxes. The maximum number of electrons in each childless box is adjustable. This process only needs to be performed once as long as the electron charge distribution is assumed unchanged during the cooling process. The ions are put into a regular grid and the grid density is adjustable. (A regular grid is used only for testing purpose. In real simulation, ions can have any distribution.) Ions are distributed into the boxes and the charge density around the ion is calculated by the electron number inside the box divided by the box volume. Electron density is plotted for a few different grid sizes and the results show the algorithm works as expected. Numerical noises are noticed in the electron density calculation, which is as expected, and the noises reduce as the grid size becomes smaller. Now it is still not clear how much it will affect the cooling rate calculation. It will be tested later.<br />
<br />
I am working on fitting the above electron density calculation code into JSPEC for cooling simulations. It needs more changes in the code than I originally expected. A new model of the electron beam has been added. But several interfaces between several modules have to be revised, because in this model the relative electron speed and temperature can change. The UI needs to be updated, too. This work is still in process.<br />
<br />
*Others<br />
*:-pCDR writing: Converted the previous writing into Latex and edited it again.<br />
*:-ICFA writing: Wrote about mulita-stage cooling strategy and cooling simulation results for both the proton beam and lead ion beam, based on my IPAC’18 paper and pCDR writing.<br />
*:-Tech report: I am writing a tech report about the TPSA/DA package that I developed based on Dr. Lingyun Yang’s code.<br />
*:-ICAP trip is approved. I was told by Prof. Berz that my talk should be arranged in the first two days. I plan to stay two nights there. <br />
*:-NERSC account: submitted the NERSC AUP, trying to re-activate my account.<br />
*:-Reviewed a paper for SIVP.<br />
*Work plan in the following two weeks<br />
*:-Continue writing and polishing the pCDR report<br />
*:-Test, finish, and document the JSPEC package of cooling with arbitrary electron beam<br />
*:-Test the turn-by-turn tracking packge for JSPEC.<br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan'''<br><br />
''No report.<br />
''<br />
<br />
----<br />
'''LERF - S. Benson'''<br><br />
*June 25-July 6<br />
**Continued to work on pCDR<br />
**Prepared operating cost estimates for LERF for Operations review<br />
**Attended the operations review for talks relevant to JLEIC and LERF.<br />
**Held kick-off meeting for FOA activities and posted minutes<br />
**Reviewed and rated LDRD proposals. Attended part of the LDRD Review <br />
**No cooler ring meeting due to Ops review.<br />
<br><br />
*July 9-20<br />
**Arrange for collaboration with HZDR for Elbe II facility.<br />
**Review new ASE and revise LOD to match<br />
**Complete quarterly report for 2018 FOA project.</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-07-06&diff=8222018-07-062018-07-09T18:20:12Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata <br>'''<br />
''No report.'' Accelerator Division Office.<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata (Interim CASA Department Head)'''<br><br />
Todd Satogata<br />
Previous two weeks (June 25-July 6)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance/HE/R&D meetings<br />
- JLEIC: Peter McIntyre meeting (Jun 26)<br />
- JLEIC: Summer student work on Booster simulations, training<br />
- JACoW: JBoD telecon (Jun 29), post/review meeting minutes<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: Director Ops review (Jun 26-28)<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
Next two weeks (July 9-July 20)<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: Audrey move transition, Li-Shi meeting (Jul 16)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance/HE/R&D meetings<br />
- JLEIC: Complete Booster vacuum tech note calculations<br />
- JLEIC: Summer student work on Booster simulations, training<br />
- IPAC18: Finalize proceedings, IPAC'18 delegate survey report<br />
- JACoW: Publishing script updates, fix PDF index of PAC'95<br />
- ODU: Randy PhD defense (Jul 12)<br />
<br />
Alex Bogacz<br />
Previous two weeks (June 25-July 6)<br />
- PERLE: Attend PERLE collaboration meeting (Jun 26, Orsay)<br />
- PERLE: Attend LHeC/FCCeh/PERLE workshop (Jun 27-29, Orsay)<br />
- PERLE: Present two talks at above meetings<br />
- ADMIN: Attend ARIES Muon Collider Workshop (Jul 1-3, Padova)<br />
- ADMIN: Present two talks at ARIES Muon Collider Workshop<br />
Next two weeks (July 9-July 20)<br />
- VACATION: Jul 9-Jul 13<br />
- ADMIN: Phys Rev Accel Beams paper review<br />
<br />
Rui Li<br />
Previous two weeks (June 25-July 6)<br />
- JLEIC: Presented the LCBI for Frank's new HOM coupler design at<br />
the impedance meeting.<br />
- JLEIC: Assessment of the behavior of collective effects in<br />
higher current regime of e-beam (E>10GeV), in responding to<br />
Yuhong's question for the high-energy JLEIC.<br />
- JLEIC: Collected the e-ring new parameters from Fanglei,<br />
Vasiliy will later send me new parameters for the p-ring. These<br />
may change the behavior of LCBI which is very sensitive to<br />
parameters.<br />
- JLEIC: Calculated growth time for the transverse coupled bunch<br />
instability (TCBI) for Frank's new HOM design using ZAP, and<br />
see no improvement of the growth rate for the new HOM coupler<br />
design from that of the old one.<br />
- JLEIC: Working on the Mathematica calculation of TCBI, so as to<br />
identify the HOM resonance that gives dominant contribution to<br />
growth rate, so the RF people can work on mitigation of these<br />
HOM.<br />
Next two weeks (July 9-July 20)<br />
- JLEIC: Finish my part of the ICFA newsletter writing<br />
- JLEIC: Continue to finish the Mathematica calculation of TCBI<br />
and its comparison with ZAP<br />
- JLEIC: Summarize the LCBI and TCBI results for exchange with<br />
the RF people<br />
- JLEIC: Estimate the resistive wall impedance in JLEIC e-ring<br />
and ion ring<br />
<br />
Edy Nissen<br />
Previous two weeks (June 25-July 6)<br />
- JLEIC: Answered LDRD questions posed by reviewers<br />
- JLEIC: Created presentation slides for LDRD review<br />
- JLEIC: Determined that the acceleration anomaly in synergia is<br />
caused by space charge, not bucket shape changes or higher order<br />
nonlinear dispersions.<br />
- JLEIC: Gave LDRD Presentation<br />
- VACATION: June 25, July 2-3<br />
Next two weeks (July 9-July 20)<br />
- JLEIC: Work on booster working point simulations to eliminate<br />
the acceleration anomaly<br />
- JLEIC: Work with summer student on injection modeling for the<br />
booster<br />
<br />
Chris Tennant<br />
Previous two weeks (June 25-July 6)<br />
- VACATION: July 5-6<br />
- JLEIC: working through issues with cooler to get a consistent S2E<br />
- JLEIC: re-tune ERL arc to accept longer bunch from injector<br />
- JLEIC: mBI analysis of cooler "Simple Arc"<br />
- PERLE: wrap up PERLE TN<br />
Next two weeks (July 9-July 20)<br />
- VACATION: July 16-19<br />
- JLEIC: seek counsel for path forward with S2E<br />
- JLEIC: pCDR writing<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
Fanglei Lin<br />
*Provided JLEIC electron polarization contribution to the ICFA Beam Dynamics Newsletter.<br />
*Provided the new electron ring parameters to Tim's group, Leigh, Rui and Shaoheng.<br />
*Working with the student on the storage ring cooler.<br />
*Miscellaneous: attended a meeting with Peter McIntyre, attended the JLEIC R&D meeting, attended JLEIC cooler project kickoff meeting, attended JLEIC general meeting.<br />
<br><br />
Vasiliy Morozov<br />
*My main activities in the past two weeks were:<br />
**Geometry tagging LDRD: simulations and data analysis.<br />
**Ion beam loss studies: work with Hannah on beam loss simulations<br />
**Writing of ICFA news letter contribution<br />
*Main activities planned for the next two weeks:<br />
**Preparation of DoE R&D quarterly report<br />
**Ion collider ring design<br />
**Beam loss studies<br />
**Writing of ICFA news letter and pCDR<br />
<br><br />
Amy Sy<br />
**Prepared and gave presentation on LDRD proposal "Laser driven polarized D source for JLEIC" at LDRD review.<br />
**Working on Skew PIC closeout report.<br />
**Starting simulations of transverse feedback system in the ion collider ring. Using Elegant lattice with injection optics to study effects of injection errors on beam stability.<br />
<br><br />
Guohui Wei<br />
*On Leave<br />
<br><br />
Yuhong Zhang<br />
*Continued development of HE-JLEIC design concept<br />
*Gave a presentation at LDRD proposal review<br />
*Started R&D activities on two FOA grants (bunched beam electron experiment and micro-bunching based coherent electron cooling)<br />
*Continued writing pre-CDR<br />
*Started editing of ICFA beam dynamics newsletter<br />
<br><br />
<br />
----<br />
'''Computational Physics - Y. Roblin'''<br><br />
Kirsten Deitrick:<br />
*Last two weeks:<br />
**Magnetized beam (LEFR PoP):<br />
*:-correct magnetization damage after FEL booster with off-axis travel through skew quad (prepping to run/optimize on cluster)<br />
*:-start looking at magnetization preservation through merger designs<br />
**Straight Merger at CBETA:<br />
*:-finish data analysis<br />
*:-begin simulations<br />
*:-present preliminary results in JLEIC R&D meeting<br />
**eCloud:<br />
*:-finish text for preCDR<br />
*:-get other cold section magnet properties from Vasiliy/Fanglei<br />
**Impedance:<br />
*:-best/worst case for electron ring impedance scenario<br />
*:-meeting (present above + feedback kickers in various machines)<br />
**Meetings:<br />
*:-Impedance<br />
*:-Cooler (x2)<br />
*:-JLEIC (x1)<br />
**Misc:<br />
*:-DOE Travel to China brief reading<br />
*:-Introduction for Summer Lecture Series (x2), subbing for Geoff Krafft<br />
*:-Raemaad GPT help (Geoff's student)<br />
*Next two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-look at 3D FEL booster optimization results<br />
*:-magnetization preservation through merger designs<br />
**Straight Merger at CBETA:<br />
*:-continue simulations<br />
*:-explain discrepancies (qualitative behavior matches relatively well)<br />
**eCloud:<br />
*:-simulate eCloud in quad/sextupole/drift of ion ring using provided parameters (mostly to show density highest in dipoles)<br />
**Meetings:<br />
*:-Cooler (x2)<br />
*:-JLEIC (x2)<br />
<br><br />
Yves Roblin:<br />
*Vacation 7/2 -7/6<br />
*JLEIC:<br />
*:-pCDR writing<br />
*:-ICFA paper writing<br />
*:-gear changing simulations<br />
*CEBAF:<br />
*:-Bteam<br />
*:-prepare ATLIS for August half pass run<br />
*:-meeting with Hall A to discuss schedule for the half pass into hall A<br />
*:-APEX procedural development and planning<br />
*:-model improvement, redoing all the arcs with proper K1 and constraints<br />
*Next two weeks: <br />
*JLEIC:<br />
*:-pCDR<br />
*:-report for FOA 17 supplemental<br />
*CEBAF:<br />
*:-model work, coordinating activity for restart<br />
*:-preparing for July 26th OPS prestart talk<br />
<Br><br />
Dennis Turner:<br />
*Last two weeks:<br />
**Presented ced2elegant and ArcSteer to BTeam 6/26<br />
**ArcSteer: <br />
*:-Odds and ends from BTeam discussions.<br />
*:-Completed templates for all 10 arcs and 0R.<br />
**rayTrace:<br />
*:-Discussed requirements with Tief and Yves.<br />
*:-Began work on data collection. Studied existing rayTrace code.<br />
**Minor bugfixes and documentation updates for ced2elegant, etc.<br />
*Out of town 6/29 to 7/1.<br />
*Sick 7/2 to 7/3.<br />
*Holiday 7/4.<br />
*Next two weeks:<br />
**Continue work on rayTrace.<br />
**Continue to get dispersionTool ready for further testing and release.<br />
**Test ArcSteer in 0R if the opportunity arises.<br />
<br><br />
He Zhang:<br />
*JSPEC Development<br />
Tested the codes that calculates the electron charge density inside an arbitrary electron bunch. The electron bunch is represented by two million particles, which are generated randomly with Gaussian distribution. The electron are loaded into memory and then distributed into a tree structure of boxes. The maximum number of electrons in each childless box is adjustable. This process only needs to be performed once as long as the electron charge distribution is assumed unchanged during the cooling process. The ions are put into a regular grid and the grid density is adjustable. (A regular grid is used only for testing purpose. In real simulation, ions can have any distribution.) Ions are distributed into the boxes and the charge density around the ion is calculated by the electron number inside the box divided by the box volume. Electron density is plotted for a few different grid sizes and the results show the algorithm works as expected. Numerical noises are noticed in the electron density calculation, which is as expected, and the noises reduce as the grid size becomes smaller. Now it is still not clear how much it will affect the cooling rate calculation. It will be tested later.<br />
<br />
I am working on fitting the above electron density calculation code into JSPEC for cooling simulations. It needs more changes in the code than I originally expected. A new model of the electron beam has been added. But several interfaces between several modules have to be revised, because in this model the relative electron speed and temperature can change. The UI needs to be updated, too. This work is still in process.<br />
<br />
*Others<br />
*:-pCDR writing: Converted the previous writing into Latex and edited it again.<br />
*:-ICFA writing: Wrote about mulita-stage cooling strategy and cooling simulation results for both the proton beam and lead ion beam, based on my IPAC’18 paper and pCDR writing.<br />
*:-Tech report: I am writing a tech report about the TPSA/DA package that I developed based on Dr. Lingyun Yang’s code.<br />
*:-ICAP trip is approved. I was told by Prof. Berz that my talk should be arranged in the first two days. I plan to stay two nights there. <br />
*:-NERSC account: submitted the NERSC AUP, trying to re-activate my account.<br />
*:-Reviewed a paper for SIVP.<br />
*Work plan in the following two weeks<br />
*:-Continue writing and polishing the pCDR report<br />
*:-Test, finish, and document the JSPEC package of cooling with arbitrary electron beam<br />
*:-Test the turn-by-turn tracking packge for JSPEC.<br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan'''<br><br />
<br />
<br />
<br />
----<br />
'''LERF - S. Benson'''<br><br />
*June 25-July 6<br />
**Continued to work on pCDR<br />
**Prepared operating cost estimates for LERF for Operations review<br />
**Attended the operations review for talks relevant to JLEIC and LERF.<br />
**Held kick-off meeting for FOA activities and posted minutes<br />
**Reviewed and rated LDRD proposals. Attended part of the LDRD Review <br />
**No cooler ring meeting due to Ops review.<br />
<br><br />
*July 9-20<br />
**Arrange for collaboration with HZDR for Elbe II facility.<br />
**Review new ASE and revise LOD to match<br />
**Complete quarterly report for 2018 FOA project.</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-07-06&diff=8212018-07-062018-07-09T13:55:13Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata <br>'''<br />
''No report.'' Accelerator Division Office.<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata (Interim CASA Department Head)'''<br><br />
Todd Satogata<br />
Previous two weeks (June 25-July 6)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance/HE/R&D meetings<br />
- JLEIC: Peter McIntyre meeting (Jun 26)<br />
- JLEIC: Summer student work on Booster simulations, training<br />
- JACoW: JBoD telecon (Jun 29), post/review meeting minutes<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: Director Ops review (Jun 26-28)<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
Next two weeks (July 9-July 20)<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: Audrey move transition, Li-Shi meeting (Jul 16)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance/HE/R&D meetings<br />
- JLEIC: Complete Booster vacuum tech note calculations<br />
- JLEIC: Summer student work on Booster simulations, training<br />
- IPAC18: Finalize proceedings, IPAC'18 delegate survey report<br />
- JACoW: Publishing script updates, fix PDF index of PAC'95<br />
- ODU: Randy PhD defense (Jul 12)<br />
<br />
Alex Bogacz<br />
Previous two weeks (June 25-July 6)<br />
- PERLE: Attend PERLE collaboration meeting (Jun 26, Orsay)<br />
- PERLE: Attend LHeC/FCCeh/PERLE workshop (Jun 27-29, Orsay)<br />
- PERLE: Present two talks at above meetings<br />
- ADMIN: Attend ARIES Muon Collider Workshop (Jul 1-3, Padova)<br />
- ADMIN: Present two talks at ARIES Muon Collider Workshop<br />
Next two weeks (July 9-July 20)<br />
- VACATION: Jul 9-Jul 13<br />
- ADMIN: Phys Rev Accel Beams paper review<br />
<br />
Rui Li<br />
Previous two weeks (June 25-July 6)<br />
- JLEIC: Presented the LCBI for Frank's new HOM coupler design at<br />
the impedance meeting.<br />
- JLEIC: Assessment of the behavior of collective effects in<br />
higher current regime of e-beam (E>10GeV), in responding to<br />
Yuhong's question for the high-energy JLEIC.<br />
- JLEIC: Collected the e-ring new parameters from Fanglei,<br />
Vasiliy will later send me new parameters for the p-ring. These<br />
may change the behavior of LCBI which is very sensitive to<br />
parameters.<br />
- JLEIC: Calculated growth time for the transverse coupled bunch<br />
instability (TCBI) for Frank's new HOM design using ZAP, and<br />
see no improvement of the growth rate for the new HOM coupler<br />
design from that of the old one.<br />
- JLEIC: Working on the Mathematica calculation of TCBI, so as to<br />
identify the HOM resonance that gives dominant contribution to<br />
growth rate, so the RF people can work on mitigation of these<br />
HOM.<br />
Next two weeks (July 9-July 20)<br />
- JLEIC: Finish my part of the ICFA newsletter writing<br />
- JLEIC: Continue to finish the Mathematica calculation of TCBI<br />
and its comparison with ZAP<br />
- JLEIC: Summarize the LCBI and TCBI results for exchange with<br />
the RF people<br />
- JLEIC: Estimate the resistive wall impedance in JLEIC e-ring<br />
and ion ring<br />
<br />
Edy Nissen<br />
Previous two weeks (June 25-July 6)<br />
- JLEIC: Answered LDRD questions posed by reviewers<br />
- JLEIC: Created presentation slides for LDRD review<br />
- JLEIC: Determined that the acceleration anomaly in synergia is<br />
caused by space charge, not bucket shape changes or higher order<br />
nonlinear dispersions.<br />
- JLEIC: Gave LDRD Presentation<br />
- VACATION: June 25, July 2-3<br />
Next two weeks (July 9-July 20)<br />
- JLEIC: Work on booster working point simulations to eliminate<br />
the acceleration anomaly<br />
- JLEIC: Work with summer student on injection modeling for the<br />
booster<br />
<br />
Chris Tennant<br />
Previous two weeks (June 25-July 6)<br />
- VACATION: July 5-6<br />
- JLEIC: working through issues with cooler to get a consistent S2E<br />
- JLEIC: re-tune ERL arc to accept longer bunch from injector<br />
- JLEIC: mBI analysis of cooler "Simple Arc"<br />
- PERLE: wrap up PERLE TN<br />
Next two weeks (July 9-July 20)<br />
- VACATION: July 16-19<br />
- JLEIC: seek counsel for path forward with S2E<br />
- JLEIC: pCDR writing<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
Fanglei Lin<br />
*Provided JLEIC electron polarization contribution to the ICFA Beam Dynamics Newsletter.<br />
*Provided the new electron ring parameters to Tim's group, Leigh, Rui and Shaoheng.<br />
*Working with the student on the storage ring cooler.<br />
*Miscellaneous: attended a meeting with Peter McIntyre, attended the JLEIC R&D meeting, attended JLEIC cooler project kickoff meeting, attended JLEIC general meeting.<br />
<br><br />
Vasiliy Morozov<br />
*My main activities in the past two weeks were:<br />
**Geometry tagging LDRD: simulations and data analysis.<br />
**Ion beam loss studies: work with Hannah on beam loss simulations<br />
**Writing of ICFA news letter contribution<br />
*Main activities planned for the next two weeks:<br />
**Preparation of DoE R&D quarterly report<br />
**Ion collider ring design<br />
**Beam loss studies<br />
**Writing of ICFA news letter and pCDR<br />
<br><br />
Amy Sy<br />
**Prepared and gave presentation on LDRD proposal "Laser driven polarized D source for JLEIC" at LDRD review.<br />
**Working on Skew PIC closeout report.<br />
**Starting simulations of transverse feedback system in the ion collider ring. Using Elegant lattice with injection optics to study effects of injection errors on beam stability.<br />
<br><br />
Guohui Wei<br />
*On Leave<br />
<br><br />
Yuhong Zhang<br />
*Continued development of HE-JLEIC design concept<br />
*Gave a presentation at LDRD proposal review<br />
*Started R&D activities on two FOA grants (bunched beam electron experiment and micro-bunching based coherent electron cooling)<br />
*Continued writing pre-CDR<br />
*Started editing of ICFA beam dynamics newsletter<br />
<br><br />
<br />
----<br />
'''Computational Physics - Y. Roblin'''<br><br />
Kirsten Deitrick:<br />
*Last two weeks:<br />
**Magnetized beam (LEFR PoP):<br />
*:-correct magnetization damage after FEL booster with off-axis travel through skew quad (prepping to run/optimize on cluster)<br />
*:-start looking at magnetization preservation through merger designs<br />
**Straight Merger at CBETA:<br />
*:-finish data analysis<br />
*:-begin simulations<br />
*:-present preliminary results in JLEIC R&D meeting<br />
**eCloud:<br />
*:-finish text for preCDR<br />
*:-get other cold section magnet properties from Vasiliy/Fanglei<br />
**Impedance:<br />
*:-best/worst case for electron ring impedance scenario<br />
*:-meeting (present above + feedback kickers in various machines)<br />
**Meetings:<br />
*:-Impedance<br />
*:-Cooler (x2)<br />
*:-JLEIC (x1)<br />
**Misc:<br />
*:-DOE Travel to China brief reading<br />
*:-Introduction for Summer Lecture Series (x2), subbing for Geoff Krafft<br />
*:-Raemaad GPT help (Geoff's student)<br />
*Next two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-look at 3D FEL booster optimization results<br />
*:-magnetization preservation through merger designs<br />
**Straight Merger at CBETA:<br />
*:-continue simulations<br />
*:-explain discrepancies (qualitative behavior matches relatively well)<br />
**eCloud:<br />
*:-simulate eCloud in quad/sextupole/drift of ion ring using provided parameters (mostly to show density highest in dipoles)<br />
**Meetings:<br />
*:-Cooler (x2)<br />
*:-JLEIC (x2)<br />
<br><br />
Yves Roblin:<br />
*Vacation 7/2 -7/6<br />
*JLEIC:<br />
*:-pCDR writing<br />
*:-ICFA paper writing<br />
*:-gear changing simulations<br />
*CEBAF:<br />
*:-Bteam<br />
*:-prepare ATLIS for August half pass run<br />
*:-meeting with Hall A to discuss schedule for the half pass into hall A<br />
*:-APEX procedural development and planning<br />
*:-model improvement, redoing all the arcs with proper K1 and constraints<br />
*Next two weeks: <br />
*JLEIC:<br />
*:-pCDR<br />
*:-report for FOA 17 supplemental<br />
*CEBAF:<br />
*:-model work, coordinating activity for restart<br />
*:-preparing for July 26th OPS prestart talk<br />
<Br><br />
Dennis Turner:<br />
*Last two weeks:<br />
**Presented ced2elegant and ArcSteer to BTeam 6/26<br />
**ArcSteer: <br />
*:-Odds and ends from BTeam discussions.<br />
*:-Completed templates for all 10 arcs and 0R.<br />
**rayTrace:<br />
*:-Discussed requirements with Tief and Yves.<br />
*:-Began work on data collection. Studied existing rayTrace code.<br />
**Minor bugfixes and documentation updates for ced2elegant, etc.<br />
*Out of town 6/29 to 7/1.<br />
*Sick 7/2 to 7/3.<br />
*Holiday 7/4.<br />
*Next two weeks:<br />
**Continue work on rayTrace.<br />
**Continue to get dispersionTool ready for further testing and release.<br />
**Test ArcSteer in 0R if the opportunity arises.<br />
<br><br />
He Zhang:<br />
*JSPEC Development<br />
Tested the codes that calculates the electron charge density inside an arbitrary electron bunch. The electron bunch is represented by two million particles, which are generated randomly with Gaussian distribution. The electron are loaded into memory and then distributed into a tree structure of boxes. The maximum number of electrons in each childless box is adjustable. This process only needs to be performed once as long as the electron charge distribution is assumed unchanged during the cooling process. The ions are put into a regular grid and the grid density is adjustable. (A regular grid is used only for testing purpose. In real simulation, ions can have any distribution.) Ions are distributed into the boxes and the charge density around the ion is calculated by the electron number inside the box divided by the box volume. Electron density is plotted for a few different grid sizes and the results show the algorithm works as expected. Numerical noises are noticed in the electron density calculation, which is as expected, and the noises reduce as the grid size becomes smaller. Now it is still not clear how much it will affect the cooling rate calculation. It will be tested later.<br />
<br />
I am working on fitting the above electron density calculation code into JSPEC for cooling simulations. It needs more changes in the code than I originally expected. A new model of the electron beam has been added. But several interfaces between several modules have to be revised, because in this model the relative electron speed and temperature can change. The UI needs to be updated, too. This work is still in process.<br />
<br />
*Others<br />
*:-pCDR writing: Converted the previous writing into Latex and edited it again.<br />
*:-ICFA writing: Wrote about mulita-stage cooling strategy and cooling simulation results for both the proton beam and lead ion beam, based on my IPAC’18 paper and pCDR writing.<br />
*:-Tech report: I am writing a tech report about the TPSA/DA package that I developed based on Dr. Lingyun Yang’s code.<br />
*:-ICAP trip is approved. I was told by Prof. Berz that my talk should be arranged in the first two days. I plan to stay two nights there. <br />
*:-NERSC account: submitted the NERSC AUP, trying to re-activate my account.<br />
*:-Reviewed a paper for SIVP.<br />
*Work plan in the following two weeks<br />
*:-Continue writing and polishing the pCDR report<br />
*:-Test, finish, and document the JSPEC package of cooling with arbitrary electron beam<br />
*:-Test the turn-by-turn tracking packge for JSPEC.<br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan'''<br><br />
<br />
<br />
<br />
----<br />
'''LERF - S. Benson'''<br></div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-07-06&diff=8202018-07-062018-07-09T13:49:49Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata <br>'''<br />
''No report.'' Accelerator Division Office.<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata (Interim CASA Department Head)'''<br><br />
Todd Satogata<br />
Previous two weeks (June 25-July 6)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance/HE/R&D meetings<br />
- JLEIC: Peter McIntyre meeting (Jun 26)<br />
- JLEIC: Summer student work on Booster simulations, training<br />
- JACoW: JBoD telecon (Jun 29), post/review meeting minutes<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: Director Ops review (Jun 26-28)<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
Next two weeks (July 9-July 20)<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: Audrey move transition, Li-Shi meeting (Jul 16)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance/HE/R&D meetings<br />
- JLEIC: Complete Booster vacuum tech note calculations<br />
- JLEIC: Summer student work on Booster simulations, training<br />
- IPAC18: Finalize proceedings, IPAC'18 delegate survey report<br />
- JACoW: Publishing script updates, fix PDF index of PAC'95<br />
- ODU: Randy PhD defense (Jul 12)<br />
<br />
Alex Bogacz<br />
Previous two weeks (June 25-July 6)<br />
- PERLE: Attend PERLE collaboration meeting (Jun 26, Orsay)<br />
- PERLE: Attend LHeC/FCCeh/PERLE workshop (Jun 27-29, Orsay)<br />
- PERLE: Present two talks at above meetings<br />
- ADMIN: Attend ARIES Muon Collider Workshop (Jul 1-3, Padova)<br />
- ADMIN: Present two talks at ARIES Muon Collider Workshop<br />
Next two weeks (July 9-July 20)<br />
- VACATION: Jul 9-Jul 13<br />
- ADMIN: Phys Rev Accel Beams paper review<br />
<br />
Rui Li<br />
Previous two weeks (June 25-July 6)<br />
- JLEIC: Presented the LCBI for Frank's new HOM coupler design at<br />
the impedance meeting.<br />
- JLEIC: Assessment of the behavior of collective effects in<br />
higher current regime of e-beam (E>10GeV), in responding to<br />
Yuhong's question for the high-energy JLEIC.<br />
- JLEIC: Collected the e-ring new parameters from Fanglei,<br />
Vasiliy will later send me new parameters for the p-ring. These<br />
may change the behavior of LCBI which is very sensitive to<br />
parameters.<br />
- JLEIC: Calculated growth time for the transverse coupled bunch<br />
instability (TCBI) for Frank's new HOM design using ZAP, and<br />
see no improvement of the growth rate for the new HOM coupler<br />
design from that of the old one.<br />
- JLEIC: Working on the Mathematica calculation of TCBI, so as to<br />
identify the HOM resonance that gives dominant contribution to<br />
growth rate, so the RF people can work on mitigation of these<br />
HOM.<br />
Next two weeks (July 9-July 20)<br />
- JLEIC: Finish my part of the ICFA newsletter writing<br />
- JLEIC: Continue to finish the Mathematica calculation of TCBI<br />
and its comparison with ZAP<br />
- JLEIC: Summarize the LCBI and TCBI results for exchange with<br />
the RF people<br />
- JLEIC: Estimate the resistive wall impedance in JLEIC e-ring<br />
and ion ring<br />
<br />
Edy Nissen<br />
Previous two weeks (June 25-July 6)<br />
- JLEIC: Answered LDRD questions posed by reviewers<br />
- JLEIC: Created presentation slides for LDRD review<br />
- JLEIC: Determined that the acceleration anomaly in synergia is<br />
caused by space charge, not bucket shape changes or higher order<br />
nonlinear dispersions.<br />
- JLEIC: Gave LDRD Presentation<br />
- VACATION: June 25, July 2-3<br />
Next two weeks (July 9-July 20)<br />
- JLEIC: Work on booster working point simulations to eliminate<br />
the acceleration anomaly<br />
- JLEIC: Work with summer student on injection modeling for the<br />
booster<br />
<br />
Chris Tennant<br />
Previous two weeks (June 25-July 6)<br />
- VACATION: July 5-6<br />
- JLEIC: working through issues with cooler to get a consistent S2E<br />
- JLEIC: re-tune ERL arc to accept longer bunch from injector<br />
- JLEIC: mBI analysis of cooler "Simple Arc"<br />
- PERLE: wrap up PERLE TN<br />
Next two weeks (July 9-July 20)<br />
- VACATION: July 16-19<br />
- JLEIC: seek counsel for path forward with S2E<br />
- JLEIC: pCDR writing<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
<br />
<br />
<br />
----<br />
'''Computational Physics - Y. Roblin'''<br><br />
Kirsten Deitrick:<br />
*Last two weeks:<br />
**Magnetized beam (LEFR PoP):<br />
*:-correct magnetization damage after FEL booster with off-axis travel through skew quad (prepping to run/optimize on cluster)<br />
*:-start looking at magnetization preservation through merger designs<br />
**Straight Merger at CBETA:<br />
*:-finish data analysis<br />
*:-begin simulations<br />
*:-present preliminary results in JLEIC R&D meeting<br />
**eCloud:<br />
*:-finish text for preCDR<br />
*:-get other cold section magnet properties from Vasiliy/Fanglei<br />
**Impedance:<br />
*:-best/worst case for electron ring impedance scenario<br />
*:-meeting (present above + feedback kickers in various machines)<br />
**Meetings:<br />
*:-Impedance<br />
*:-Cooler (x2)<br />
*:-JLEIC (x1)<br />
**Misc:<br />
*:-DOE Travel to China brief reading<br />
*:-Introduction for Summer Lecture Series (x2), subbing for Geoff Krafft<br />
*:-Raemaad GPT help (Geoff's student)<br />
*Next two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-look at 3D FEL booster optimization results<br />
*:-magnetization preservation through merger designs<br />
**Straight Merger at CBETA:<br />
*:-continue simulations<br />
*:-explain discrepancies (qualitative behavior matches relatively well)<br />
**eCloud:<br />
*:-simulate eCloud in quad/sextupole/drift of ion ring using provided parameters (mostly to show density highest in dipoles)<br />
**Meetings:<br />
*:-Cooler (x2)<br />
*:-JLEIC (x2)<br />
<br><br />
Yves Roblin:<br />
*Vacation 7/2 -7/6<br />
*JLEIC:<br />
*:-pCDR writing<br />
*:-ICFA paper writing<br />
*:-gear changing simulations<br />
*CEBAF:<br />
*:-Bteam<br />
*:-prepare ATLIS for August half pass run<br />
*:-meeting with Hall A to discuss schedule for the half pass into hall A<br />
*:-APEX procedural development and planning<br />
*:-model improvement, redoing all the arcs with proper K1 and constraints<br />
*Next two weeks: <br />
*JLEIC:<br />
*:-pCDR<br />
*:-report for FOA 17 supplemental<br />
*CEBAF:<br />
*:-model work, coordinating activity for restart<br />
*:-preparing for July 26th OPS prestart talk<br />
<Br><br />
Dennis Turner:<br />
*Last two weeks:<br />
**Presented ced2elegant and ArcSteer to BTeam 6/26<br />
**ArcSteer: <br />
*:-Odds and ends from BTeam discussions.<br />
*:-Completed templates for all 10 arcs and 0R.<br />
**rayTrace:<br />
*:-Discussed requirements with Tief and Yves.<br />
*:-Began work on data collection. Studied existing rayTrace code.<br />
**Minor bugfixes and documentation updates for ced2elegant, etc.<br />
*Out of town 6/29 to 7/1.<br />
*Sick 7/2 to 7/3.<br />
*Holiday 7/4.<br />
*Next two weeks:<br />
**Continue work on rayTrace.<br />
**Continue to get dispersionTool ready for further testing and release.<br />
**Test ArcSteer in 0R if the opportunity arises.<br />
<br><br />
He Zhang:<br />
*JSPEC Development<br />
Tested the codes that calculates the electron charge density inside an arbitrary electron bunch. The electron bunch is represented by two million particles, which are generated randomly with Gaussian distribution. The electron are loaded into memory and then distributed into a tree structure of boxes. The maximum number of electrons in each childless box is adjustable. This process only needs to be performed once as long as the electron charge distribution is assumed unchanged during the cooling process. The ions are put into a regular grid and the grid density is adjustable. (A regular grid is used only for testing purpose. In real simulation, ions can have any distribution.) Ions are distributed into the boxes and the charge density around the ion is calculated by the electron number inside the box divided by the box volume. Electron density is plotted for a few different grid sizes and the results show the algorithm works as expected. Numerical noises are noticed in the electron density calculation, which is as expected, and the noises reduce as the grid size becomes smaller. Now it is still not clear how much it will affect the cooling rate calculation. It will be tested later.<br />
<br />
I am working on fitting the above electron density calculation code into JSPEC for cooling simulations. It needs more changes in the code than I originally expected. A new model of the electron beam has been added. But several interfaces between several modules have to be revised, because in this model the relative electron speed and temperature can change. The UI needs to be updated, too. This work is still in process.<br />
<br />
*Others<br />
*:-pCDR writing: Converted the previous writing into Latex and edited it again.<br />
*:-ICFA writing: Wrote about mulita-stage cooling strategy and cooling simulation results for both the proton beam and lead ion beam, based on my IPAC’18 paper and pCDR writing.<br />
*:-Tech report: I am writing a tech report about the TPSA/DA package that I developed based on Dr. Lingyun Yang’s code.<br />
*:-ICAP trip is approved. I was told by Prof. Berz that my talk should be arranged in the first two days. I plan to stay two nights there. <br />
*:-NERSC account: submitted the NERSC AUP, trying to re-activate my account.<br />
*:-Reviewed a paper for SIVP.<br />
*Work plan in the following two weeks<br />
*:-Continue writing and polishing the pCDR report<br />
*:-Test, finish, and document the JSPEC package of cooling with arbitrary electron beam<br />
*:-Test the turn-by-turn tracking packge for JSPEC.<br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan'''<br><br />
<br />
<br />
<br />
----<br />
'''LERF - S. Benson'''<br></div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-07-06&diff=8192018-07-062018-07-09T13:36:16Z<p>Anichols: Created page with "'''Director - M. Spata <br>''' ''No report.'' Accelerator Division Office. ---- '''Accelerator Physics - T. Satogata (Interim CASA Department Head)'''<br> Todd Satogata..."</p>
<hr />
<div>'''Director - M. Spata <br>'''<br />
''No report.'' Accelerator Division Office.<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata (Interim CASA Department Head)'''<br><br />
Todd Satogata<br />
Previous two weeks (June 25-July 6)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance/HE/R&D meetings<br />
- JLEIC: Peter McIntyre meeting (Jun 26)<br />
- JLEIC: Summer student work on Booster simulations, training<br />
- JACoW: JBoD telecon (Jun 29), post/review meeting minutes<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: Director Ops review (Jun 26-28)<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
Next two weeks (July 9-July 20)<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: Audrey move transition, Li-Shi meeting (Jul 16)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance/HE/R&D meetings<br />
- JLEIC: Complete Booster vacuum tech note calculations<br />
- JLEIC: Summer student work on Booster simulations, training<br />
- IPAC18: Finalize proceedings, IPAC'18 delegate survey report<br />
- JACoW: Publishing script updates, fix PDF index of PAC'95<br />
- ODU: Randy PhD defense (Jul 12)<br />
<br />
Alex Bogacz<br />
Previous two weeks (June 25-July 6)<br />
- PERLE: Attend PERLE collaboration meeting (Jun 26, Orsay)<br />
- PERLE: Attend LHeC/FCCeh/PERLE workshop (Jun 27-29, Orsay)<br />
- PERLE: Present two talks at above meetings<br />
- ADMIN: Attend ARIES Muon Collider Workshop (Jul 1-3, Padova)<br />
- ADMIN: Present two talks at ARIES Muon Collider Workshop<br />
Next two weeks (July 9-July 20)<br />
- VACATION: Jul 9-Jul 13<br />
- ADMIN: Phys Rev Accel Beams paper review<br />
<br />
Rui Li<br />
Previous two weeks (June 25-July 6)<br />
- JLEIC: Presented the LCBI for Frank's new HOM coupler design at<br />
the impedance meeting.<br />
- JLEIC: Assessment of the behavior of collective effects in<br />
higher current regime of e-beam (E>10GeV), in responding to<br />
Yuhong's question for the high-energy JLEIC.<br />
- JLEIC: Collected the e-ring new parameters from Fanglei,<br />
Vasiliy will later send me new parameters for the p-ring. These<br />
may change the behavior of LCBI which is very sensitive to<br />
parameters.<br />
- JLEIC: Calculated growth time for the transverse coupled bunch<br />
instability (TCBI) for Frank's new HOM design using ZAP, and<br />
see no improvement of the growth rate for the new HOM coupler<br />
design from that of the old one.<br />
- JLEIC: Working on the Mathematica calculation of TCBI, so as to<br />
identify the HOM resonance that gives dominant contribution to<br />
growth rate, so the RF people can work on mitigation of these<br />
HOM.<br />
Next two weeks (July 9-July 20)<br />
- JLEIC: Finish my part of the ICFA newsletter writing<br />
- JLEIC: Continue to finish the Mathematica calculation of TCBI<br />
and its comparison with ZAP<br />
- JLEIC: Summarize the LCBI and TCBI results for exchange with<br />
the RF people<br />
- JLEIC: Estimate the resistive wall impedance in JLEIC e-ring<br />
and ion ring<br />
<br />
Edy Nissen<br />
Previous two weeks (June 25-July 6)<br />
- JLEIC: Answered LDRD questions posed by reviewers<br />
- JLEIC: Created presentation slides for LDRD review<br />
- JLEIC: Determined that the acceleration anomaly in synergia is<br />
caused by space charge, not bucket shape changes or higher order<br />
nonlinear dispersions.<br />
- JLEIC: Gave LDRD Presentation<br />
- VACATION: June 25, July 2-3<br />
Next two weeks (July 9-July 20)<br />
- JLEIC: Work on booster working point simulations to eliminate<br />
the acceleration anomaly<br />
- JLEIC: Work with summer student on injection modeling for the<br />
booster<br />
<br />
Chris Tennant<br />
Previous two weeks (June 25-July 6)<br />
- VACATION: July 5-6<br />
- JLEIC: working through issues with cooler to get a consistent S2E<br />
- JLEIC: re-tune ERL arc to accept longer bunch from injector<br />
- JLEIC: mBI analysis of cooler "Simple Arc"<br />
- PERLE: wrap up PERLE TN<br />
Next two weeks (July 9-July 20)<br />
- VACATION: July 16-19<br />
- JLEIC: seek counsel for path forward with S2E<br />
- JLEIC: pCDR writing</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018&diff=81820182018-07-09T12:47:20Z<p>Anichols: </p>
<hr />
<div><br />
[[2018-07-06]]<br><br />
[[2018-06-22]]<br><br />
[[2018-06-08]]<br><br />
[[2018-05-25]]<br><br />
[[2018-05-11]]<br><br />
[[2018-04-27]]<br><br />
[[2018-04-13]]<br><br />
[[2018-03-30]]<br><br />
[[2018-03-16]]<br><br />
[[2018-03-02]]<br><br />
[[2018-02-16]]<br><br />
[[2018-02-02]]<br><br />
[[2018-01-22]]<br></div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-06-22&diff=8172018-06-222018-06-25T19:11:08Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata''' <br><br />
''No report.'' Acting Accelerator Department Head<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata''' <br><br />
Todd Satogata<br />
Previous two weeks (June 11-June 22)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance/HE/R&D meetings<br />
- JLEIC: Summer student work on Booster simulations, training<br />
- OPS: TAC review of PAC proposals, transfer BTeam to Yves<br />
- OPS: Hall D/GlueX collaboration meeting/talk (June 21)<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
- JACoW: Plan Board of Directors telecon (late June)<br />
- ADMIN: HPI Training (Jul 15), Andre Seryi meeting (Jun 18)<br />
Next two weeks (June 25-July 6)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance/HE/R&D meetings<br />
- JLEIC: Peter McIntyre meeting (Jun 26)<br />
- JLEIC: Summer student work on Booster simulations, training<br />
- IPAC18: Finalize proceedings, delegate survey report<br />
- JACoW: JBoD telecon (Jun 29), post/review meeting minutes<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: Director Ops review (Jun 26-28)<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
<br />
Alex Bogacz<br />
Previous two weeks (June 11-June 22)<br />
- ADMIN: Work on talk for muon acceleration (ARIES workshop)<br />
- PERLE: Work on talk for LHeC/ERL (Orsay LHeC meeting)<br />
- PERLE: Review talks on CBeta (Hoffstaetter), 802MHz cav (Marhauser)<br />
- IPAC18: Submit light peer review papers to IOP for processing<br />
Next two weeks (June 25-July 6)<br />
- ADMIN: Phys Rev paper review<br />
- PERLE: Attend PERLE collaboration meeting in Orsay<br />
- PERLE: Attend LHeC/FCCeh/PERLE workshop in Orsay<br />
- ADMIN: Attend ARIES Muon Collider Workshop in Padua<br />
<br />
Rui Li<br />
Previous two weeks (June 11-June 22)<br />
- JLEIC: Continue LCBI (longitudinal coupled bunch instability)<br />
growth rates with new HOM design from Marhauser<br />
- JLEIC: Investigate discrepancy between mathematica/ZAP growth rates<br />
for LCBI growth rate calculations; found speed of light bug<br />
- JLEIC: Prepare impedance meeting presentation on LCBI, HOM issues<br />
in cavity first HOM frequency shift<br />
Next two weeks (June 25-July 6)<br />
- JLEIC: Impedance meeting (June 25)<br />
- JLEIC: Calculate TCBI (transverse coupled bunch instability)<br />
growth rates with new HOM design from Marhauser<br />
- JLEIC: Write up tech notes on LCBI/TCBI calculations<br />
- JLEIC: Write up LCBI/TCBI calculations for pCDR and ICFA newsletter<br />
<br />
Edy Nissen<br />
Previous two weeks (June 11-June 22)<br />
- JLEIC: Polishing presentation, question responses for LDRD committee<br />
- JLEIC: Updated Booster graphics for pCDR<br />
Next two weeks (June 25-July 6)<br />
- JLEIC: Finish LDRD proposal, address requests/updates<br />
- ADMIN: AP COM professional development<br />
- JLEIC: Start looking at Booster injection design with summer student<br />
<br />
Chris Tennant<br />
Previous two weeks (June 11-June 22)<br />
- JLEIC: Work with Dave to sort out CCR beam exchange<br />
- PERLE: Finished TN-18-031 on initial analysis of PERLE baseline lattice<br />
- JLEIC: Input distribution from Fay for ERL tracking (and CCR?)<br />
- LERF: Read up on documents related to being LERF APEL<br />
Next two weeks (June 25-July 6)<br />
- begin pushing Fay's distribution through cooler ERL<br />
- bunch is factors of a few longer than the ERL was designed to handle<br />
- continue work on building up exchange region in elegant<br />
- add text to pCDR where applicable<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang''' <br><br />
Fanglei Lin<br />
*Finished electron collider ring lattice with vertical doglegs implemented in the spin rotators. Extracting the lattice parameters.<br />
*Communicating with Klaus Heinemann and provided the electron collider ring lattice for spin matching.<br />
*Miscellaneous: attended the JLEIC R&D meeting, attended JLab users group meeting, starting working on the FOA proposal of storage ring cooler.<br />
<br><br />
Vasiliy Morozov<br />
*My main activities in the past two weeks were:<br />
*:-Beam loss studies with Hannah<br />
*:-Geometry tagging LDRD: working with Tobias, simulations and data analysis<br />
*:-Ion polarization: teleconference with Anatoliy's group<br />
*:-Preparing and giving a talk at the JLab Users Group Meeting<br />
*:-Detector background studies: beam line modeling and contributing to Latifa's generic detector R&D proposal<br />
*:-Design of compact coupling compensation of the electron spin rotators<br />
*Activities planned for the next two weeks:<br />
*:-Design of the ion collider ring<br />
*:-Geometry tagging LDRD: data analysis and writing of DIS proceedings<br />
*:-Beam loss studies with Hannah<br />
<br><br />
Amy Sy<br />
*My activities over the past few weeks are as follows:<br />
*:-Working on the polarized ion sources contribution to the ICFA Beam Dynamics article.<br />
*:-Responses to reviewer questions on LDRD proposal on laser driven polarized atomic deuterium source. Preparing presentation to LDRD review committee.<br />
*:-Working on Skew PIC closeout report.<br />
<br><br />
Guohui Wei<br />
*On leave<br />
<br><br />
Yuhong Zhang<br />
*Worked on High Energy JLEIC, gave two talks<br />
*Worked on pre-CDR<br />
*Worked on next Joint EIC Collaboration Meeting<br />
*Attended many meetings<br />
<br><br />
<br />
----<br />
'''Computational Physics - Y. Roblin''' <br><br />
Kirsten Deitrick<br />
*Last two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-trying to correct magnetization damage after FEL booster with off-axis travel through skew quad<br />
*:-start trying to quantify magnetization (to better run the optimizer)<br />
**Straight Merger at CBeta:<br />
*:-data analysis<br />
*:-field map of coil requested and received<br />
**eCloud:<br />
*:-ask people for codes<br />
*:-working on corresponding text for preCDR<br />
**Impedance:<br />
*:-send out request for items to go on agenda (meeting on 06/25)<br />
*:-feedback kicker count for various machines<br />
*:-best/worst case electron ring impedance scenario<br />
**Meetings:<br />
*:-Cooler (x2)<br />
*:-JLEIC<br />
*:-CBETA weekly<br />
**Misc:<br />
*:-GPT / cluster help for three different summer students (2xGeoff's and 1xAlicia's)<br />
*:-vacation on June 18th<br />
*Next two weeks:<br />
**Magnetized beam (LEFR PoP):<br />
*:-correct magnetization damage after FEL booster with off-axis travel through skew quad<br />
*:-start looking at magnetization preservation through merger designs<br />
**Straight Merger at CBeta:<br />
*:-finish data analysis<br />
*:-begin simulations<br />
*:-present preliminary results in JLEIC R&D meeting<br />
**eCloud:<br />
*:-finish text for preCDR<br />
*:-get other cold section magnet properties from Vasiliy/Fanglei<br />
**Impedance:<br />
*:-best/worst case for electron ring impedance scenario<br />
*:-meeting (present above + feedback kickers in various machines)<br />
**Meetings:<br />
*:-Impedance<br />
*:-Cooler (x2)<br />
*:-JLEIC (x1-2)<br />
**Misc:<br />
*:-DOE Travel to China brief reading<br />
<br><br />
Yves Roblin<br />
*Finished JLAB-TN-18-032 “Design Optics for the 12 GeV CEBAF arcs”<br />
*Working on JLAB-TN-18-XXX “From TOSCA to ELEGANT, incorporating field multipoles in the model”<br />
*readjusting all the optics for ARC3->ARCA to incorporate the proper quadrupole terms in the arc dipoles, the proper M56 between appropriate knobs, etc (the TN is a summary of that work)<br />
*BTEAM coordination and meetings<br />
*Working with D. Turner on various model-based tools and algorithms<br />
*APEX collaboration: Working with them to design an alignment procedure both pre-beam and beam based for their multifoil target. Preliminary meeting and draft document out.<br />
*reviewed proposals and LOI’s for TAC meeting, attended TAC meeting.<br />
<br><br />
Dennis Turner<br />
*Last two weeks (mostly developing ArcSteer):<br />
**ArcSteer:<br />
*:-Ready for testing, ATLis 18263 submitted.<br />
**QTSnyder:<br />
*:-Fixed design eta plots to reflect damping correctly.<br />
**dispersionTool:<br />
*:-Fixed design eta plots to reflect damping correctly.<br />
*:-Getting ready for further testing and release<br />
**qsUtility:<br />
*:-Addressed OPS-PR 3500643 (dataCollector not working with 5C11/5C11B harps)<br />
*:-Worked with Alicia's summer student to prepare him for Injector emittance measurements.<br />
**dogCalc:<br />
*:-Implemented workaround for sqrt(-) exceptions<br />
**USPAS:<br />
*:-Signed up for "Beam Based Diagnostics" and "Design and Engineering of Modern Beam Diagnostics" classes in January.<br />
**Vacation 6/8, 6/12, and 6/13.<br />
*Next two weeks:<br />
**Prepare slides and present ced2elagant and ArcSteer to BTeam 6/26.<br />
**Begin work on rayTrace data collection and analysis tools.<br />
**Continue to get dispersionTool ready for further testing and release.<br />
**Out of town 6/29 to 7/1.<br />
<br><br />
He Zhang<br />
*JSPEC Development<br />
Cooling with an arbitrary electron bunch. For this purpose, we allow the users to represent the electron bunch as a list of particles with given positions and velocities. We will calculate the electron density, average velocity and temperature around each ion, which will be used for the friction force calculation for the ion. Finding all the electrons around a given ion and sequencing them in 3D space will be very time consuming. To achieve better efficiency, we will use the following algorithm. (1) Enclose all the electron in a cube and divide the cube into small cubes hierarchically until the number of electrons in each cube is smaller than a pre-determined number. The cubes form a tree structure. This is exactly what we do in the fast multipole method. (2) Then for each box find which ions are contained. (3) Finally we can calculate the electron density and other parameters needed for the friction force calculation for each ion according to the electrons inside the same box. Codes for step (1) and (2) are finished. <br><br><br />
Turn-by-turn tracking. I am adding the turn-by-turn tracking package to the official JSPEC release. Transverse tracking was done by a linear phase advance according to the given tunes. Longitudinal tracking was done either by a tune or by a RF cavity. The package has been exposed to the UI. But need more testing. <br><br><br />
A bug of the user interface (the transverse coupling was not correctly set for IBS) was found and fixed. <br />
*Fast Multipole Method <br />
The Cartesian tensor and differential algebra (DA) based kernel-independent FMM code was revised so that the code can treat multiple kernel functions simultaneously. The 3D single level Stokes kernel, which is composed of three kernel functions, was calculated and the code works as expected. <br />
<br><br><br />
Two versions of the error function that takes a DA vector as an input and returns another DA vector were developed. One version calls the C++ math function to calculate the constant part of the return DA vector and use theoretical formula to calculate the higher order parts of the return DA vector. The other version use Chebyshev polynomial with DA to calculate the return DA vector. They will be used to demonstrate how DA can be used to calculate special functions. <br><br />
*Others<br />
*:-Tested the C++ code for constructing the 2nd kind generating function using differential algebra on various orders and dimensions. The code was sent to Balsa and Vasiliy. <br />
*:-Reviewed a paper for SIVP. <br />
*Work plan in the following two weeks<br />
*:-Continue writing and polishing the pCDR report<br />
*:-Test, finish, and document the JSPEC package of cooling with arbitrary electron beam<br />
*:-Test the turn-by-turn tracking packge for JSPEC.<br />
*:-Generating data and write on the kernel-independent FMM<br />
<br><br />
<br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
Kevin Jordan<br />
*I have been working with the PC to choose talks for the upcoming IBIC conference that will be in Shanghai this September<br />
*Work continues on the LCLS-II CM test conversion of the LERF, most all of the cables have been pulled - they still need to be terminated. The first set of 8 SSAs and LLRF racks have been run together and at full power (into waveguide shorts).<br />
*The past few weeks have been spent cleaning up the entire LERF for a DOE Isotope visit - that visit went very well<br />
*Trip to Columbus OH to Eden Cryo vender for inspection of the LCLS-II transfer line and cryogenic-can, both of these are being delivered late - we are trying to pick up the schedule<br />
Next two weeks;<br />
*RadiaBeam visit for design review<br />
*Run the next 8 SSAs & LLRF racks<br />
*Get three cables terminated<br />
*Dayne from SLAC will arrive in a couple weeks to commission the Cryogenic control racks<br />
<br><br />
Joe Gubeli:<br />
*Worked on the new SLMs for ARC 7. I have a good optical solution and the chamber is well defined lacking only some support structures. Setup the optics for this SLM on the bench and am working with Michael T. to determine specifications like slits and remote/local adjustment capabilities. Ordered and received several cameras that Mike T. and I will setup to determine the best for future diagnostics. <br />
*Worked a little on LCLS-II as well as on the Radiabeam CRADA. We have received the test linear motor and controller for the HPWS insertion. I will talk to Wes M. about it control with EPICS. <br />
*Helped I&C with the Hall C dump. While the setup there is not optimal due to transport and lens sizes the user is satisfied with the image.<br />
*Going forward I expect I will continue working on the ARC 7 SLM, Radiabeam, the isotope project and the paper for IBIC 2018.<br />
<br><br />
Mike Tiefenback:<br />
*requirements for diagnostic optimization for SLMs in Arc7A and elsewhere, including the 1C12 outlook for fall 2018. We expect to acquire a few cameras each of 2 or 3 styles we use on-site and set them up looking at the same image to test for camera-to-camera variance in measured RMS image size. Have just begun investigating resolution issues with Gubeli and hardware.<br />
*I've had to devote time to magnet integrator tasks, particularly to the prospect of residual mis-wired quadrupoles.<br />
*Have begun (with operator Brandi Cade) cryogenic heat load calibration vs. JT setting to characterize the linac heat load. The benefit will be to guide a better match of RF heat (Q0 dissipation) against resistive heat so that RF state transitions are more transparent to CHL operation. Looks promising so far.<br />
*Investigating X-ray imaging in the transport arcs to Halls A/C (a step beyond visible light optical imaging in these lines, as a route to a real-time energy spread monitor).<br />
<br><br />
<br />
----<br />
'''LERF - S. Benson'''<br />
*June 11-22<br />
**Worked on editing section 7.3 of pCDR<br />
**Reviewed SBIR RFP to see if anything for coolers was missing. Added something on ion clearing gap production.<br />
**Briefed Andrei Seryi on LERF plans and activities and toured him through the facility<br />
**Continued to review LDRD proposals<br />
**Hosted Cooler ring meetings on June 13 and June 20 and wrote up minutes<br />
**Had kickoff meeting to discuss mini-workshop on ERL studies for EIC<br />
**Looked for spare parts to use in the UITF at the LERF<br />
<br />
*June 25-July 6<br />
**Arrange for collaboration with HZDR for Elbe II facility.<br />
**Revise LOD to match new ASE document.<br />
**Continue to work on pCDR<br />
**Work to kick off FOA activities</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-06-22&diff=8162018-06-222018-06-25T19:10:32Z<p>Anichols: Created page with "'''Director - M. Spata''' <br> ''No report.'' Acting Accelerator Department Head ---- '''Accelerator Physics - T. Satogata''' <br> Todd Satogata Previous two weeks (June..."</p>
<hr />
<div>'''Director - M. Spata''' <br><br />
''No report.'' Acting Accelerator Department Head<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata''' <br><br />
Todd Satogata<br />
Previous two weeks (June 11-June 22)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance/HE/R&D meetings<br />
- JLEIC: Summer student work on Booster simulations, training<br />
- OPS: TAC review of PAC proposals, transfer BTeam to Yves<br />
- OPS: Hall D/GlueX collaboration meeting/talk (June 21)<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
- JACoW: Plan Board of Directors telecon (late June)<br />
- ADMIN: HPI Training (Jul 15), Andre Seryi meeting (Jun 18)<br />
Next two weeks (June 25-July 6)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance/HE/R&D meetings<br />
- JLEIC: Peter McIntyre meeting (Jun 26)<br />
- JLEIC: Summer student work on Booster simulations, training<br />
- IPAC18: Finalize proceedings, delegate survey report<br />
- JACoW: JBoD telecon (Jun 29), post/review meeting minutes<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: Director Ops review (Jun 26-28)<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
<br />
Alex Bogacz<br />
Previous two weeks (June 11-June 22)<br />
- ADMIN: Work on talk for muon acceleration (ARIES workshop)<br />
- PERLE: Work on talk for LHeC/ERL (Orsay LHeC meeting)<br />
- PERLE: Review talks on CBeta (Hoffstaetter), 802MHz cav (Marhauser)<br />
- IPAC18: Submit light peer review papers to IOP for processing<br />
Next two weeks (June 25-July 6)<br />
- ADMIN: Phys Rev paper review<br />
- PERLE: Attend PERLE collaboration meeting in Orsay<br />
- PERLE: Attend LHeC/FCCeh/PERLE workshop in Orsay<br />
- ADMIN: Attend ARIES Muon Collider Workshop in Padua<br />
<br />
Rui Li<br />
Previous two weeks (June 11-June 22)<br />
- JLEIC: Continue LCBI (longitudinal coupled bunch instability)<br />
growth rates with new HOM design from Marhauser<br />
- JLEIC: Investigate discrepancy between mathematica/ZAP growth rates<br />
for LCBI growth rate calculations; found speed of light bug<br />
- JLEIC: Prepare impedance meeting presentation on LCBI, HOM issues<br />
in cavity first HOM frequency shift<br />
Next two weeks (June 25-July 6)<br />
- JLEIC: Impedance meeting (June 25)<br />
- JLEIC: Calculate TCBI (transverse coupled bunch instability)<br />
growth rates with new HOM design from Marhauser<br />
- JLEIC: Write up tech notes on LCBI/TCBI calculations<br />
- JLEIC: Write up LCBI/TCBI calculations for pCDR and ICFA newsletter<br />
<br />
Edy Nissen<br />
Previous two weeks (June 11-June 22)<br />
- JLEIC: Polishing presentation, question responses for LDRD committee<br />
- JLEIC: Updated Booster graphics for pCDR<br />
Next two weeks (June 25-July 6)<br />
- JLEIC: Finish LDRD proposal, address requests/updates<br />
- ADMIN: AP COM professional development<br />
- JLEIC: Start looking at Booster injection design with summer student<br />
<br />
Chris Tennant<br />
Previous two weeks (June 11-June 22)<br />
- JLEIC: Work with Dave to sort out CCR beam exchange<br />
- PERLE: Finished TN-18-031 on initial analysis of PERLE baseline lattice<br />
- JLEIC: Input distribution from Fay for ERL tracking (and CCR?)<br />
- LERF: Read up on documents related to being LERF APEL<br />
Next two weeks (June 25-July 6)<br />
- begin pushing Fay's distribution through cooler ERL<br />
- bunch is factors of a few longer than the ERL was designed to handle<br />
- continue work on building up exchange region in elegant<br />
- add text to pCDR where applicable<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang''' <br><br />
Fanglei Lin<br />
*Finished electron collider ring lattice with vertical doglegs implemented in the spin rotators. Extracting the lattice parameters.<br />
*Communicating with Klaus Heinemann and provided the electron collider ring lattice for spin matching.<br />
*Miscellaneous: attended the JLEIC R&D meeting, attended JLab users group meeting, starting working on the FOA proposal of storage ring cooler.<br />
<br><br />
Vasiliy Morozov<br />
*My main activities in the past two weeks were:<br />
*:-Beam loss studies with Hannah<br />
*:-Geometry tagging LDRD: working with Tobias, simulations and data analysis<br />
*:-Ion polarization: teleconference with Anatoliy's group<br />
*:-Preparing and giving a talk at the JLab Users Group Meeting<br />
*:-Detector background studies: beam line modeling and contributing to Latifa's generic detector R&D proposal<br />
*:-Design of compact coupling compensation of the electron spin rotators<br />
*Activities planned for the next two weeks:<br />
*:-Design of the ion collider ring<br />
*:-Geometry tagging LDRD: data analysis and writing of DIS proceedings<br />
*:-Beam loss studies with Hannah<br />
<br><br />
Amy Sy<br />
*My activities over the past few weeks are as follows:<br />
*:-Working on the polarized ion sources contribution to the ICFA Beam Dynamics article.<br />
*:-Responses to reviewer questions on LDRD proposal on laser driven polarized atomic deuterium source. Preparing presentation to LDRD review committee.<br />
*:-Working on Skew PIC closeout report.<br />
<br><br />
Guohui Wei<br />
*On leave<br />
<br><br />
Yuhong Zhang<br />
*Worked on High Energy JLEIC, gave two talks<br />
*Worked on pre-CDR<br />
*Worked on next Joint EIC Collaboration Meeting<br />
*Attended many meetings<br />
<br><br />
<br />
----<br />
'''Computational Physics - Y. Roblin''' <br><br />
Kirsten Deitrick<br />
*Last two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-trying to correct magnetization damage after FEL booster with off-axis travel through skew quad<br />
*:-start trying to quantify magnetization (to better run the optimizer)<br />
**Straight Merger at CBeta:<br />
*:-data analysis<br />
*:-field map of coil requested and received<br />
**eCloud:<br />
*:-ask people for codes<br />
*:-working on corresponding text for preCDR<br />
**Impedance:<br />
*:-send out request for items to go on agenda (meeting on 06/25)<br />
*:-feedback kicker count for various machines<br />
*:-best/worst case electron ring impedance scenario<br />
**Meetings:<br />
*:-Cooler (x2)<br />
*:-JLEIC<br />
*:-CBETA weekly<br />
**Misc:<br />
*:-GPT / cluster help for three different summer students (2xGeoff's and 1xAlicia's)<br />
*:-vacation on June 18th<br />
*Next two weeks:<br />
**Magnetized beam (LEFR PoP):<br />
*:-correct magnetization damage after FEL booster with off-axis travel through skew quad<br />
*:-start looking at magnetization preservation through merger designs<br />
**Straight Merger at CBeta:<br />
*:-finish data analysis<br />
*:-begin simulations<br />
*:-present preliminary results in JLEIC R&D meeting<br />
**eCloud:<br />
*:-finish text for preCDR<br />
*:-get other cold section magnet properties from Vasiliy/Fanglei<br />
**Impedance:<br />
*:-best/worst case for electron ring impedance scenario<br />
*:-meeting (present above + feedback kickers in various machines)<br />
**Meetings:<br />
*:-Impedance<br />
*:-Cooler (x2)<br />
*:-JLEIC (x1-2)<br />
**Misc:<br />
*:-DOE Travel to China brief reading<br />
<br><br />
Yves Roblin<br />
*Finished JLAB-TN-18-032 “Design Optics for the 12 GeV CEBAF arcs”<br />
*Working on JLAB-TN-18-XXX “From TOSCA to ELEGANT, incorporating field multipoles in the model”<br />
*readjusting all the optics for ARC3->ARCA to incorporate the proper quadrupole terms in the arc dipoles, the proper M56 between appropriate knobs, etc (the TN is a summary of that work)<br />
*BTEAM coordination and meetings<br />
*Working with D. Turner on various model-based tools and algorithms<br />
*APEX collaboration: Working with them to design an alignment procedure both pre-beam and beam based for their multifoil target. Preliminary meeting and draft document out.<br />
*reviewed proposals and LOI’s for TAC meeting, attended TAC meeting.<br />
<br><br />
Dennis Turner<br />
*Last two weeks (mostly developing ArcSteer):<br />
**ArcSteer:<br />
*:-Ready for testing, ATLis 18263 submitted.<br />
**QTSnyder:<br />
*:-Fixed design eta plots to reflect damping correctly.<br />
**dispersionTool:<br />
*:-Fixed design eta plots to reflect damping correctly.<br />
*:-Getting ready for further testing and release<br />
**qsUtility:<br />
*:-Addressed OPS-PR 3500643 (dataCollector not working with 5C11/5C11B harps)<br />
*:-Worked with Alicia's summer student to prepare him for Injector emittance measurements.<br />
**dogCalc:<br />
*:-Implemented workaround for sqrt(-) exceptions<br />
**USPAS:<br />
*:-Signed up for "Beam Based Diagnostics" and "Design and Engineering of Modern Beam Diagnostics" classes in January.<br />
**Vacation 6/8, 6/12, and 6/13.<br />
*Next two weeks:<br />
**Prepare slides and present ced2elagant and ArcSteer to BTeam 6/26.<br />
**Begin work on rayTrace data collection and analysis tools.<br />
**Continue to get dispersionTool ready for further testing and release.<br />
**Out of town 6/29 to 7/1.<br />
<br><br />
He Zhang<br />
*JSPEC Development<br />
Cooling with an arbitrary electron bunch. For this purpose, we allow the users to represent the electron bunch as a list of particles with given positions and velocities. We will calculate the electron density, average velocity and temperature around each ion, which will be used for the friction force calculation for the ion. Finding all the electrons around a given ion and sequencing them in 3D space will be very time consuming. To achieve better efficiency, we will use the following algorithm. (1) Enclose all the electron in a cube and divide the cube into small cubes hierarchically until the number of electrons in each cube is smaller than a pre-determined number. The cubes form a tree structure. This is exactly what we do in the fast multipole method. (2) Then for each box find which ions are contained. (3) Finally we can calculate the electron density and other parameters needed for the friction force calculation for each ion according to the electrons inside the same box. Codes for step (1) and (2) are finished. <br><br><br />
Turn-by-turn tracking. I am adding the turn-by-turn tracking package to the official JSPEC release. Transverse tracking was done by a linear phase advance according to the given tunes. Longitudinal tracking was done either by a tune or by a RF cavity. The package has been exposed to the UI. But need more testing. <br><br><br />
A bug of the user interface (the transverse coupling was not correctly set for IBS) was found and fixed. <br />
*Fast Multipole Method <br />
The Cartesian tensor and differential algebra (DA) based kernel-independent FMM code was revised so that the code can treat multiple kernel functions simultaneously. The 3D single level Stokes kernel, which is composed of three kernel functions, was calculated and the code works as expected. <br />
<br><br><br />
Two versions of the error function that takes a DA vector as an input and returns another DA vector were developed. One version calls the C++ math function to calculate the constant part of the return DA vector and use theoretical formula to calculate the higher order parts of the return DA vector. The other version use Chebyshev polynomial with DA to calculate the return DA vector. They will be used to demonstrate how DA can be used to calculate special functions. <br><br />
*Others<br />
*:-Tested the C++ code for constructing the 2nd kind generating function using differential algebra on various orders and dimensions. The code was sent to Balsa and Vasiliy. <br />
*:-Reviewed a paper for SIVP. <br />
*Work plan in the following two weeks<br />
*:-Continue writing and polishing the pCDR report<br />
*:-Test, finish, and document the JSPEC package of cooling with arbitrary electron beam<br />
*:-Test the turn-by-turn tracking packge for JSPEC.<br />
*:-Generating data and write on the kernel-independent FMM<br />
<br><br />
<br />
----<br />
'''Diagnostic Development - K. Jordan'''<br />
Kevin Jordan<br />
*I have been working with the PC to choose talks for the upcoming IBIC conference that will be in Shanghai this September<br />
*Work continues on the LCLS-II CM test conversion of the LERF, most all of the cables have been pulled - they still need to be terminated. The first set of 8 SSAs and LLRF racks have been run together and at full power (into waveguide shorts).<br />
*The past few weeks have been spent cleaning up the entire LERF for a DOE Isotope visit - that visit went very well<br />
*Trip to Columbus OH to Eden Cryo vender for inspection of the LCLS-II transfer line and cryogenic-can, both of these are being delivered late - we are trying to pick up the schedule<br />
Next two weeks;<br />
*RadiaBeam visit for design review<br />
*Run the next 8 SSAs & LLRF racks<br />
*Get three cables terminated<br />
*Dayne from SLAC will arrive in a couple weeks to commission the Cryogenic control racks<br />
<br><br />
Joe Gubeli:<br />
*Worked on the new SLMs for ARC 7. I have a good optical solution and the chamber is well defined lacking only some support structures. Setup the optics for this SLM on the bench and am working with Michael T. to determine specifications like slits and remote/local adjustment capabilities. Ordered and received several cameras that Mike T. and I will setup to determine the best for future diagnostics. <br />
*Worked a little on LCLS-II as well as on the Radiabeam CRADA. We have received the test linear motor and controller for the HPWS insertion. I will talk to Wes M. about it control with EPICS. <br />
*Helped I&C with the Hall C dump. While the setup there is not optimal due to transport and lens sizes the user is satisfied with the image.<br />
*Going forward I expect I will continue working on the ARC 7 SLM, Radiabeam, the isotope project and the paper for IBIC 2018.<br />
<br><br />
Mike Tiefenback:<br />
*requirements for diagnostic optimization for SLMs in Arc7A and elsewhere, including the 1C12 outlook for fall 2018. We expect to acquire a few cameras each of 2 or 3 styles we use on-site and set them up looking at the same image to test for camera-to-camera variance in measured RMS image size. Have just begun investigating resolution issues with Gubeli and hardware.<br />
*I've had to devote time to magnet integrator tasks, particularly to the prospect of residual mis-wired quadrupoles.<br />
*Have begun (with operator Brandi Cade) cryogenic heat load calibration vs. JT setting to characterize the linac heat load. The benefit will be to guide a better match of RF heat (Q0 dissipation) against resistive heat so that RF state transitions are more transparent to CHL operation. Looks promising so far.<br />
*Investigating X-ray imaging in the transport arcs to Halls A/C (a step beyond visible light optical imaging in these lines, as a route to a real-time energy spread monitor).<br />
<br><br />
<br />
----<br />
'''LERF - S. Benson'''<br />
*June 11-22<br />
**Worked on editing section 7.3 of pCDR<br />
**Reviewed SBIR RFP to see if anything for coolers was missing. Added something on ion clearing gap production.<br />
**Briefed Andrei Seryi on LERF plans and activities and toured him through the facility<br />
**Continued to review LDRD proposals<br />
**Hosted Cooler ring meetings on June 13 and June 20 and wrote up minutes<br />
**Had kickoff meeting to discuss mini-workshop on ERL studies for EIC<br />
**Looked for spare parts to use in the UITF at the LERF<br />
<br />
*June 25-July 6<br />
**Arrange for collaboration with HZDR for Elbe II facility.<br />
**Revise LOD to match new ASE document.<br />
**Continue to work on pCDR<br />
**Work to kick off FOA activities</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018&diff=81520182018-06-25T18:29:26Z<p>Anichols: </p>
<hr />
<div><br />
[[2018-06-22]]<br><br />
[[2018-06-08]]<br><br />
[[2018-05-25]]<br><br />
[[2018-05-11]]<br><br />
[[2018-04-27]]<br><br />
[[2018-04-13]]<br><br />
[[2018-03-30]]<br><br />
[[2018-03-16]]<br><br />
[[2018-03-02]]<br><br />
[[2018-02-16]]<br><br />
[[2018-02-02]]<br><br />
[[2018-01-22]]<br></div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=Main_Page&diff=814Main Page2018-06-19T19:19:40Z<p>Anichols: /* Updates */</p>
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== [[Updates]] ==<br />
'''<br />
*[https://wiki.jlab.org/casa-adminwiki/images/a/a8/As_of_11-11-2015.pdf Computer Inventory]<br />
<br />
== [[Budget]] ==<br />
'''<br />
*[https://wiki.jlab.org/casa-adminwiki/images/a/a8/As_of_11-11-2015.pdf Staffing Module]<br />
*CASA Rollup AWP Summary<br />
*CASA Travel Spreadsheet<br />
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== [[Staff]] ==<br />
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* CASA Computer Inventory [[Media:wiki.jlab.org/casawiki/images/1/1c/2018-06-13_CASA Computer Inventory_admin.pdf]]<br />
* [[CASA Group Meetings]]<br />
* Org Chart<br />
<br />
== [[CASA Leadership]] ==<br />
''' <br />
* [[Leadership Reports]]<br />
* [[Accelerator Physics: Todd Satogata]]<br />
* [[Accelerator R and D: Yuhong Zhang]]<br />
* [[Computational Physics: Yves Roblin]]<br />
* [[Diagnostics Development: Kevin Jordan]]<br />
* [[LERF: Steve Benson]]<br />
<br />
== [[Resources]] ==<br />
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* [http://casa.jlab.org/ CASA Home Page]<br />
* [https://cc.jlab.org/ Computer Center]<br />
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<br />
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<br />
<br />
== [[Updates]] ==<br />
'''<br />
<br />
== [[Budget]] ==<br />
'''<br />
*[[Staffing Module]]<br />
*CASA Rollup AWP Summary<br />
*CASA Travel Spreadsheet<br />
<br />
== [[Staff]] ==<br />
'''<br />
* CASA Computer Inventory [[Media:wiki.jlab.org/casawiki/images/1/1c/2018-06-13_CASA Computer Inventory_admin.pdf]]<br />
* [[CASA Group Meetings]]<br />
* Org Chart<br />
<br />
== [[CASA Leadership]] ==<br />
''' <br />
* [[Leadership Reports]]<br />
* [[Accelerator Physics: Todd Satogata]]<br />
* [[Accelerator R and D: Yuhong Zhang]]<br />
* [[Computational Physics: Yves Roblin]]<br />
* [[Diagnostics Development: Kevin Jordan]]<br />
* [[LERF: Steve Benson]]<br />
<br />
== [[Resources]] ==<br />
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* [https://cc.jlab.org/ Computer Center]<br />
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* [https://misportal.jlab.org/DeltekTC/ Timesheets]<br />
<br />
== [[Getting started]] ==<br />
'''<br />
* [//www.mediawiki.org/wiki/Manual:Configuration_settings Configuration settings list]<br />
* [//www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]<br />
* [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-06-08&diff=8102018-06-082018-06-11T13:45:38Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata''' <br><br />
''No report.'' Acting Accelerator Department Head<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata''' <br><br />
Todd Satogata<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: Further organize ICFA beam dynamics newsletter input<br />
- ADMIN: Summer student setting in, work planning<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: CASA group meeting (Jun 6)<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
- IPAC18: Finalize proceedings, delegate survey report<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: Further organize ICFA beam dynamics newsletter input<br />
- OPS: TAC review of PAC proposals, transfer BTeam to Yves<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
- JACoW: Plan Board of Directors telecon (late June)<br />
- ADMIN: HPI Training (Jul 15), Andre Seryi meeting (Jun 18)<br />
- ER@CEBAF: Work on coordination of magnet acquisition from Cornell<br />
<br />
Alex Bogacz<br />
Previous two weeks (May 28-June 8)<br />
- ADMIN: Summer student lecture prep, lecture (June 5)<br />
- IPAC18: Light peer review paper final checks and delivery<br />
- LHEC: Work on paper on LHeC ERL scaling<br />
Next two weeks (June 11-June 22)<br />
- ADMIN: Work on talk for muon acceleration<br />
- PERLE: Work on talk for PERLE<br />
- IPAC18: Submit light peer review papers to IOP for processing<br />
<br />
Rui Li<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: Work on pCDR writeup<br />
- JLEIC: Calculate ion coupled bunch instability growth rates with<br />
new HOM design from Marhauser<br />
- JLEIC: Work on ICFA newsletter section on beam dynamics in JLEIC rings<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Continue ion coupled bunch instability growth rates with<br />
new HOM design from Marhauser<br />
- JLEIC: Work on ICFA newsletter section on beam dynamics in JLEIC rings<br />
<br />
Ed Nissen<br />
Previous two weeks (May 28-June 8)<br />
- ADMIN: Summer student setting in, work planning, reading up on pyORBIT<br />
- JLEIC: Continue Booster acceleration simulations<br />
- JLEIC: Continue booster nonlinear optimization work<br />
- JLEIC: Finish draft writing for pCDR for Booster section<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Polishing presentation for LDRD committee, presentation<br />
- JLEIC: pCDR Booster consistency updates<br />
- JLEIC: Start looking at Booster injection design with summer student<br />
<br />
Chris Tennant<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: investigate effect of using 2x longer bunch in CCR<br />
- JLEIC: begin pushing a realistic (via Fay) bunch through ERL<br />
driver of CCR and assess performance (i.e. will it make it<br />
around the first arc, let alone make it to the CCR?)<br />
- PERLE: Vlasov and elegant tracking to get uBI gain in PERLE first pass<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Work with Dave to sort out CCR beam exchange<br />
- JLEIC: Input distribution from Fay for ERL tracking (and CCR?)<br />
- LERF: Read up on documents related to being LERF APEL<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang''' <br><br />
Fanglei Lin<br />
*Working on and finished the pCDR documentation for the electron collider ring, electron polarization and electron interaction region.<br />
*Implementing vertical doglegs in the electron collider ring.<br />
*Miscellaneous: participated HE-JLEIC discussion, attended the CASA group meeting, attended the JLEIC R&D meetings, attended the JLEIC detector meeting, attended the JLEIC general meeting.<br />
Vasiliy Morozov<br />
*Last two weeks<br />
*:-Writing pCDR chapters: ion collider ring, interaction region, ion polarization<br />
*:-Working with Hannah on beam loss studies<br />
*:-Geometry tagging LDRD: working on Sartre<br />
*My planned activities for the next two weeks are:<br />
*:-Collider ring design<br />
*:-Coupling compensation scheme for the electron spin rotator<br />
*:-Beam loss studies<br />
*:-Work with Tobias on Geometry Tagging LDRD<br />
Amy Sy<br />
*Continued work on ion sources chapter and article for the JLEIC pre-CDR and ICFA Beam Dynamics newsletter.<br />
*Continued work on Skew Parametric-Resonance Ionization Cooling closeout report describing the body of work completed in the last few years.<br />
*Comparison of injection damping parameters in the CERN PS with corresponding parameters for JLEIC ion collider ring following methods in a paper by R. Cappi.<br />
Guohui Wei<br />
*Leave Without Pay - New return date: Aug. 1<br />
Yuhong Zhang<br />
*Worked on HE-JLEIC design concept and gave two presentations<br />
*Continued working on IMP cooling experiment<br />
*Completed chapter 4 of the pre-CDR. Started writing of cooling chapter<br />
*Worked on dates of the next EIC collaboration meeting<br />
<br><br />
<br />
----<br />
'''Computational Physics - Y. Roblin''' <br><br />
Kirsten Dietrich:<br />
*Last two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-trying to correct magnetization damage after FEL booster with off-axis travel through skew quad<br />
*:-trip into LERF vault to locate corrector magnets in current beamline<br />
*:-start trying to quantify magnetization (to better run the optimizer)<br />
**Straight Merger at CBeta:<br />
*:-data analysis (ongoing)<br />
**eCloud:<br />
*:-lit review<br />
*:-email CERN questions related to PyECLOUD results<br />
*:-nag people for codes<br />
*:-generated two main cases (60 GeV CM with stainless steel and NEG-coated)<br />
*:-working on corresponding text for preCDR<br />
**Impedance:<br />
*:-look into kicker count for other machines (feedback (transverse and longitudinal), injection, abort) to add into estimates<br />
**Meetings:<br />
*:-Cooler (x2)<br />
*:-CASA<br />
*:-JLEIC<br />
**Misc:<br />
*:-agreed to act as GPT help for two summer students (minimal)<br />
*Next two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-finish quantifying magnetization<br />
*:-run optimizer for 3D FEL booster to fix off-axis/magnetization<br />
**Straight Merger at CBETA:<br />
*:-data analysis<br />
*:-ask George B. about status of field map for coils<br />
*eClould:<br />
*:-calculate tune shift for corresponding densities of eCloud<br />
*:-finish text for preCDR<br />
**Impedance:<br />
*:-add kickers, RF valves into estimates<br />
*:-make best/worst case scenario for electron ring<br />
*:-put out call for presentations for next meeting (June 25)<br />
**Meetings:<br />
*:-Cooler (x2)<br />
*:-JLEIC (x1-2)<br />
*Misc:<br />
*:-Vacation on June 18th<br />
<br><br />
Yves Roblin:<br />
*CEBAF:<br />
*:-TOSCA versus ELEGANT. writing a note on how to go from one to the other.<br />
*:-2R investigation: Working with J. Benesch to generate the higher order multipoles for all dipoles in the machine using TOSCA models. The idea is to incorporate that into the ELEGANT model. As a first step, I used TOSCA to calculate the same quantity that the 12GeV magnet team used (B'L/BL) and compared with actual measurements provided by K. Bagget. The agreement is good so we are proceeding with using TOSCA to specify the other multipoles (up to decapole). preliminary tracking with multipoles in the S/R magnets qualitatively reproduce features that are commonly seen in the FOPT's.<br />
*:-Worked with M. Tiefenback on optimizing ELEGANT command files for the simulation and use of synchrotron light monitors. Found a few oddities in ELEGANT, working to resolve it.<br />
*:-Met with Thia Keppel, Arne F., D. HigginBotham, M. Tiefenback to find a way to run an Hall A experiment which requires only a few hours of beam at less than 1GeV. We are thinking of running with SL off and also using that opportunity to cross-calibrate ARC1,ARC2 and the hall dipoles strings (1C and 3C). Arne has set aside time the first 2 weeks of August to do the setup in tune mode in order to prepare for the actual experiment (sometimes in november).<br />
*:-Working on transitioning leadership of BTEAM from Todd Satogata to myself. Preparing mid and long term goals up to late 2019. Some of the coming challenges are: several energy changes this year, hyper nuclear end of year requiring low energy spread, next year we will have to deliver parity quality beam at 1 pass while running at 5 pass in other halls. Discussions about this have started. All of this is within the context of a push for model and CED improvements.<br />
*JLEIC:<br />
*:-preparing for the FOA work. First quarter is to implement a higher order tracking in beambeam3d. This will reuse what we already did for GHOST, including the recent work He Zhang has been doing.<br />
*:-continuing pCDR work.<br />
*:-Help C. Tennant to configure his CSR distribution smoothing script on the qcd farm. (on Ops, he could only process 1 million particles, he needs to process in the tens of millions)<br />
*OTHER:<br />
*:-sick leave 6/7, leave 6/8<br />
<br><br />
He Zhang:<br />
*Fast multipole method<br />
*:-Used the single level FMM code to solve Yukawa potential problem. The code works as expected. One only needs to revise the kernel function and do not need to change anything else. Then I read a few materials to understand how the Stokes kernel works and I am trying to solve the problem using the FMM code. It looks straightforward, but we need to calculate three kernel functions. Although we can do it one by one, but the proper way is to calculate them all together for better efficiency. Needs some coding to make it happen. <br />
*:-pCDR writing<br />
*:-Did simulations for the low energy DC cooling in the booster and wrote the draft for this section. Polishing the other sections. One more section left: Optimization of the electron cooling efficiency. <br />
*Beam-beam code development<br />
*:-Revise the COSY Script file so that Vasiliy and Balsa can generate high order maps and differential equations from the generating function. Vasiliy suggests finally they want to use MADX to generate the map. But it is not clear how to construct the generating function and the differential equations in MADX. So I wrote c++ code to construct the generating function from the truncated map. The procedure includes (1) read the truncated map from a input file; (2) convert the map into a differential algebra (DA) vector; (3) construct the 2nd kind of generation function (DA vector); (4) construct the differential equations (DA vectors); and (5) convert the differential equations into the “map” data type. Step (3) and (4) include many DA operations, so the TPSA code I wrote previously is used. The code is almost done. Tested with a 4D map, it generates exactly the same generating function with COSY. For the specific 6D map for JLEIC p ring, the generating function of this new code has an extra term “010010” when compared with the one by COSY. The coefficient is at least eight orders smaller than those of other terms. So it may be a numerical phenomena and does not affect the symplectic tracking. This needs to be checked. I will test a few cases before I delivery the code.<br />
*:-As a byproduct, a deeply hidden bug in the TPSA package is founded and fixed. Some new functions are added, such as take derivative of DA vector w.r.t. a base, integrate a DA vector w.r.t. a base, calculate the inverse map of a given DA map. The updates has been pushed to github.<br />
*Work plan in the following two weeks<br />
*:-Continue writing and polishing the pCDR report<br />
*:-Some coding for the kernel-independent FMM<br />
*:-Dust particle transport<br />
*:-Understand the dispersive cooling theory<br />
<br><br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
''No report.''<br />
<br />
----<br />
'''LERF - S. Benson''' <br><br />
*May 29-June 8<br />
*:-Prepared budget for isotope project<br />
*:-Completed question answers for LDRD proposals<br />
*:-Reviewed a couple of AIP papers<br />
*:-Worked on cleaning up the LERF and preparing for the DOE visit<br />
*:-Held meeting on scope of budget of isotope project and wrote up minutes<br />
*:-Hosted cooling ring meetings on May 30 and June 6 and wrote up minutes<br />
*:-Met with facilities to review facility needs for cooler ring<br />
*:-Worked on section 7.3 of pCDR<br />
*June 11-22<br />
*:-Help to host DOE visit for Isotope studies<br />
*:-Arrange for collaboration with HZDR for Elbe II facility.<br />
*:-Revise LOD to match new ASE document.<br />
*:-Continue to revise section 7.3 of pCDR<br />
*:-Work with A. Ungaro to get AWP information into the system</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-06-08&diff=8092018-06-082018-06-11T13:44:43Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata''' <br><br />
''No report.'' Acting Accelerator Department Head<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata''' <br><br />
Todd Satogata<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: Further organize ICFA beam dynamics newsletter input<br />
- ADMIN: Summer student setting in, work planning<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: CASA group meeting (Jun 6)<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
- IPAC18: Finalize proceedings, delegate survey report<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: Further organize ICFA beam dynamics newsletter input<br />
- OPS: TAC review of PAC proposals, transfer BTeam to Yves<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
- JACoW: Plan Board of Directors telecon (late June)<br />
- ADMIN: HPI Training (Jul 15), Andre Seryi meeting (Jun 18)<br />
- ER@CEBAF: Work on coordination of magnet acquisition from Cornell<br />
<br />
Alex Bogacz<br />
Previous two weeks (May 28-June 8)<br />
- ADMIN: Summer student lecture prep, lecture (June 5)<br />
- IPAC18: Light peer review paper final checks and delivery<br />
- LHEC: Work on paper on LHeC ERL scaling<br />
Next two weeks (June 11-June 22)<br />
- ADMIN: Work on talk for muon acceleration<br />
- PERLE: Work on talk for PERLE<br />
- IPAC18: Submit light peer review papers to IOP for processing<br />
<br />
Rui Li<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: Work on pCDR writeup<br />
- JLEIC: Calculate ion coupled bunch instability growth rates with<br />
new HOM design from Marhauser<br />
- JLEIC: Work on ICFA newsletter section on beam dynamics in JLEIC rings<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Continue ion coupled bunch instability growth rates with<br />
new HOM design from Marhauser<br />
- JLEIC: Work on ICFA newsletter section on beam dynamics in JLEIC rings<br />
<br />
Ed Nissen<br />
Previous two weeks (May 28-June 8)<br />
- ADMIN: Summer student setting in, work planning, reading up on pyORBIT<br />
- JLEIC: Continue Booster acceleration simulations<br />
- JLEIC: Continue booster nonlinear optimization work<br />
- JLEIC: Finish draft writing for pCDR for Booster section<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Polishing presentation for LDRD committee, presentation<br />
- JLEIC: pCDR Booster consistency updates<br />
- JLEIC: Start looking at Booster injection design with summer student<br />
<br />
Chris Tennant<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: investigate effect of using 2x longer bunch in CCR<br />
- JLEIC: begin pushing a realistic (via Fay) bunch through ERL<br />
driver of CCR and assess performance (i.e. will it make it<br />
around the first arc, let alone make it to the CCR?)<br />
- PERLE: Vlasov and elegant tracking to get uBI gain in PERLE first pass<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Work with Dave to sort out CCR beam exchange<br />
- JLEIC: Input distribution from Fay for ERL tracking (and CCR?)<br />
- LERF: Read up on documents related to being LERF APEL<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang''' <br><br />
Fanglei Lin<br />
*Working on and finished the pCDR documentation for the electron collider ring, electron polarization and electron interaction region.<br />
*Implementing vertical doglegs in the electron collider ring.<br />
*Miscellaneous: participated HE-JLEIC discussion, attended the CASA group meeting, attended the JLEIC R&D meetings, attended the JLEIC detector meeting, attended the JLEIC general meeting.<br />
Vasiliy Morozov<br />
*Last two weeks<br />
*:-Writing pCDR chapters: ion collider ring, interaction region, ion polarization<br />
*:-Working with Hannah on beam loss studies<br />
*:-Geometry tagging LDRD: working on Sartre<br />
*My planned activities for the next two weeks are:<br />
*:-Collider ring design<br />
*:-Coupling compensation scheme for the electron spin rotator<br />
*:-Beam loss studies<br />
*:-Work with Tobias on Geometry Tagging LDRD<br />
Amy Sy<br />
*:-Continued work on ion sources chapter and article for the JLEIC pre-CDR and ICFA Beam Dynamics newsletter.<br />
*:-Continued work on Skew Parametric-Resonance Ionization Cooling closeout report describing the body of work completed in the last few years.<br />
*:-Comparison of injection damping parameters in the CERN PS with corresponding parameters for JLEIC ion collider ring following methods in a paper by R. Cappi.<br />
Guohui Wei<br />
*:-Leave Without Pay - New return date: Aug. 1<br />
Yuhong Zhang<br />
*:-Worked on HE-JLEIC design concept and gave two presentations<br />
*:-Continued working on IMP cooling experiment<br />
*:-Completed chapter 4 of the pre-CDR. Started writing of cooling chapter<br />
*:-Worked on dates of the next EIC collaboration meeting<br />
<br><br />
<br />
----<br />
'''Computational Physics - Y. Roblin''' <br><br />
Kirsten Dietrich:<br />
*Last two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-trying to correct magnetization damage after FEL booster with off-axis travel through skew quad<br />
*:-trip into LERF vault to locate corrector magnets in current beamline<br />
*:-start trying to quantify magnetization (to better run the optimizer)<br />
**Straight Merger at CBeta:<br />
*:-data analysis (ongoing)<br />
**eCloud:<br />
*:-lit review<br />
*:-email CERN questions related to PyECLOUD results<br />
*:-nag people for codes<br />
*:-generated two main cases (60 GeV CM with stainless steel and NEG-coated)<br />
*:-working on corresponding text for preCDR<br />
**Impedance:<br />
*:-look into kicker count for other machines (feedback (transverse and longitudinal), injection, abort) to add into estimates<br />
**Meetings:<br />
*:-Cooler (x2)<br />
*:-CASA<br />
*:-JLEIC<br />
**Misc:<br />
*:-agreed to act as GPT help for two summer students (minimal)<br />
*Next two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-finish quantifying magnetization<br />
*:-run optimizer for 3D FEL booster to fix off-axis/magnetization<br />
**Straight Merger at CBETA:<br />
*:-data analysis<br />
*:-ask George B. about status of field map for coils<br />
*eClould:<br />
*:-calculate tune shift for corresponding densities of eCloud<br />
*:-finish text for preCDR<br />
**Impedance:<br />
*:-add kickers, RF valves into estimates<br />
*:-make best/worst case scenario for electron ring<br />
*:-put out call for presentations for next meeting (June 25)<br />
**Meetings:<br />
*:-Cooler (x2)<br />
*:-JLEIC (x1-2)<br />
*Misc:<br />
*:-Vacation on June 18th<br />
<br><br />
Yves Roblin:<br />
*CEBAF:<br />
*:-TOSCA versus ELEGANT. writing a note on how to go from one to the other.<br />
*:-2R investigation: Working with J. Benesch to generate the higher order multipoles for all dipoles in the machine using TOSCA models. The idea is to incorporate that into the ELEGANT model. As a first step, I used TOSCA to calculate the same quantity that the 12GeV magnet team used (B'L/BL) and compared with actual measurements provided by K. Bagget. The agreement is good so we are proceeding with using TOSCA to specify the other multipoles (up to decapole). preliminary tracking with multipoles in the S/R magnets qualitatively reproduce features that are commonly seen in the FOPT's.<br />
*:-Worked with M. Tiefenback on optimizing ELEGANT command files for the simulation and use of synchrotron light monitors. Found a few oddities in ELEGANT, working to resolve it.<br />
*:-Met with Thia Keppel, Arne F., D. HigginBotham, M. Tiefenback to find a way to run an Hall A experiment which requires only a few hours of beam at less than 1GeV. We are thinking of running with SL off and also using that opportunity to cross-calibrate ARC1,ARC2 and the hall dipoles strings (1C and 3C). Arne has set aside time the first 2 weeks of August to do the setup in tune mode in order to prepare for the actual experiment (sometimes in november).<br />
*:-Working on transitioning leadership of BTEAM from Todd Satogata to myself. Preparing mid and long term goals up to late 2019. Some of the coming challenges are: several energy changes this year, hyper nuclear end of year requiring low energy spread, next year we will have to deliver parity quality beam at 1 pass while running at 5 pass in other halls. Discussions about this have started. All of this is within the context of a push for model and CED improvements.<br />
*JLEIC:<br />
*:-preparing for the FOA work. First quarter is to implement a higher order tracking in beambeam3d. This will reuse what we already did for GHOST, including the recent work He Zhang has been doing.<br />
*:-continuing pCDR work.<br />
*:-Help C. Tennant to configure his CSR distribution smoothing script on the qcd farm. (on Ops, he could only process 1 million particles, he needs to process in the tens of millions)<br />
*OTHER:<br />
*:-sick leave 6/7, leave 6/8<br />
<br><br />
He Zhang:<br />
*Fast multipole method<br />
*:-Used the single level FMM code to solve Yukawa potential problem. The code works as expected. One only needs to revise the kernel function and do not need to change anything else. Then I read a few materials to understand how the Stokes kernel works and I am trying to solve the problem using the FMM code. It looks straightforward, but we need to calculate three kernel functions. Although we can do it one by one, but the proper way is to calculate them all together for better efficiency. Needs some coding to make it happen. <br />
*:-pCDR writing<br />
*:-Did simulations for the low energy DC cooling in the booster and wrote the draft for this section. Polishing the other sections. One more section left: Optimization of the electron cooling efficiency. <br />
*Beam-beam code development<br />
*:-Revise the COSY Script file so that Vasiliy and Balsa can generate high order maps and differential equations from the generating function. Vasiliy suggests finally they want to use MADX to generate the map. But it is not clear how to construct the generating function and the differential equations in MADX. So I wrote c++ code to construct the generating function from the truncated map. The procedure includes (1) read the truncated map from a input file; (2) convert the map into a differential algebra (DA) vector; (3) construct the 2nd kind of generation function (DA vector); (4) construct the differential equations (DA vectors); and (5) convert the differential equations into the “map” data type. Step (3) and (4) include many DA operations, so the TPSA code I wrote previously is used. The code is almost done. Tested with a 4D map, it generates exactly the same generating function with COSY. For the specific 6D map for JLEIC p ring, the generating function of this new code has an extra term “010010” when compared with the one by COSY. The coefficient is at least eight orders smaller than those of other terms. So it may be a numerical phenomena and does not affect the symplectic tracking. This needs to be checked. I will test a few cases before I delivery the code.<br />
*:-As a byproduct, a deeply hidden bug in the TPSA package is founded and fixed. Some new functions are added, such as take derivative of DA vector w.r.t. a base, integrate a DA vector w.r.t. a base, calculate the inverse map of a given DA map. The updates has been pushed to github.<br />
*Work plan in the following two weeks<br />
*:-Continue writing and polishing the pCDR report<br />
*:-Some coding for the kernel-independent FMM<br />
*:-Dust particle transport<br />
*:-Understand the dispersive cooling theory<br />
<br><br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
''No report.''<br />
<br />
----<br />
'''LERF - S. Benson''' <br><br />
*May 29-June 8<br />
*:-Prepared budget for isotope project<br />
*:-Completed question answers for LDRD proposals<br />
*:-Reviewed a couple of AIP papers<br />
*:-Worked on cleaning up the LERF and preparing for the DOE visit<br />
*:-Held meeting on scope of budget of isotope project and wrote up minutes<br />
*:-Hosted cooling ring meetings on May 30 and June 6 and wrote up minutes<br />
*:-Met with facilities to review facility needs for cooler ring<br />
*:-Worked on section 7.3 of pCDR<br />
*June 11-22<br />
*:-Help to host DOE visit for Isotope studies<br />
*:-Arrange for collaboration with HZDR for Elbe II facility.<br />
*:-Revise LOD to match new ASE document.<br />
*:-Continue to revise section 7.3 of pCDR<br />
*:-Work with A. Ungaro to get AWP information into the system</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-06-08&diff=8082018-06-082018-06-11T13:43:48Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata''' <br><br />
''No report.'' Acting Accelerator Department Head<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata''' <br><br />
Todd Satogata<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: Further organize ICFA beam dynamics newsletter input<br />
- ADMIN: Summer student setting in, work planning<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: CASA group meeting (Jun 6)<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
- IPAC18: Finalize proceedings, delegate survey report<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: Further organize ICFA beam dynamics newsletter input<br />
- OPS: TAC review of PAC proposals, transfer BTeam to Yves<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
- JACoW: Plan Board of Directors telecon (late June)<br />
- ADMIN: HPI Training (Jul 15), Andre Seryi meeting (Jun 18)<br />
- ER@CEBAF: Work on coordination of magnet acquisition from Cornell<br />
<br />
Alex Bogacz<br />
Previous two weeks (May 28-June 8)<br />
- ADMIN: Summer student lecture prep, lecture (June 5)<br />
- IPAC18: Light peer review paper final checks and delivery<br />
- LHEC: Work on paper on LHeC ERL scaling<br />
Next two weeks (June 11-June 22)<br />
- ADMIN: Work on talk for muon acceleration<br />
- PERLE: Work on talk for PERLE<br />
- IPAC18: Submit light peer review papers to IOP for processing<br />
<br />
Rui Li<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: Work on pCDR writeup<br />
- JLEIC: Calculate ion coupled bunch instability growth rates with<br />
new HOM design from Marhauser<br />
- JLEIC: Work on ICFA newsletter section on beam dynamics in JLEIC rings<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Continue ion coupled bunch instability growth rates with<br />
new HOM design from Marhauser<br />
- JLEIC: Work on ICFA newsletter section on beam dynamics in JLEIC rings<br />
<br />
Ed Nissen<br />
Previous two weeks (May 28-June 8)<br />
- ADMIN: Summer student setting in, work planning, reading up on pyORBIT<br />
- JLEIC: Continue Booster acceleration simulations<br />
- JLEIC: Continue booster nonlinear optimization work<br />
- JLEIC: Finish draft writing for pCDR for Booster section<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Polishing presentation for LDRD committee, presentation<br />
- JLEIC: pCDR Booster consistency updates<br />
- JLEIC: Start looking at Booster injection design with summer student<br />
<br />
Chris Tennant<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: investigate effect of using 2x longer bunch in CCR<br />
- JLEIC: begin pushing a realistic (via Fay) bunch through ERL<br />
driver of CCR and assess performance (i.e. will it make it<br />
around the first arc, let alone make it to the CCR?)<br />
- PERLE: Vlasov and elegant tracking to get uBI gain in PERLE first pass<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Work with Dave to sort out CCR beam exchange<br />
- JLEIC: Input distribution from Fay for ERL tracking (and CCR?)<br />
- LERF: Read up on documents related to being LERF APEL<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang''' <br><br />
Fanglei Lin<br />
*Working on and finished the pCDR documentation for the electron collider ring, electron polarization and electron interaction region.<br />
*Implementing vertical doglegs in the electron collider ring.<br />
*Miscellaneous: participated HE-JLEIC discussion, attended the CASA group meeting, attended the JLEIC R&D meetings, attended the JLEIC detector meeting, attended the JLEIC general meeting.<br />
Vasiliy Morozov<br />
*Last two weeks<br />
*:-Writing pCDR chapters: ion collider ring, interaction region, ion polarization<br />
*:-Working with Hannah on beam loss studies<br />
*:-Geometry tagging LDRD: working on Sartre<br />
*My planned activities for the next two weeks are:<br />
*:-Collider ring design<br />
*:-Coupling compensation scheme for the electron spin rotator<br />
*:-Beam loss studies<br />
*:-Work with Tobias on Geometry Tagging LDRD<br />
Amy Sy<br />
*:-Continued work on ion sources chapter and article for the JLEIC pre-CDR and ICFA Beam Dynamics newsletter.<br />
*:-Continued work on Skew Parametric-Resonance Ionization Cooling closeout report describing the body of work completed in the last few years.<br />
*:-Comparison of injection damping parameters in the CERN PS with corresponding parameters for JLEIC ion collider ring following methods in a paper by R. Cappi.<br />
Guohui Wei<br />
Leave Without Pay - New return date: Aug. 1<br />
Yuhong Zhang<br />
*:-Worked on HE-JLEIC design concept and gave two presentations<br />
*:-Continued working on IMP cooling experiment<br />
*:-Completed chapter 4 of the pre-CDR. Started writing of cooling chapter<br />
*:-Worked on dates of the next EIC collaboration meeting<br />
<br><br />
----<br />
'''Computational Physics - Y. Roblin''' <br><br />
Kirsten Dietrich:<br />
*Last two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-trying to correct magnetization damage after FEL booster with off-axis travel through skew quad<br />
*:-trip into LERF vault to locate corrector magnets in current beamline<br />
*:-start trying to quantify magnetization (to better run the optimizer)<br />
**Straight Merger at CBeta:<br />
*:-data analysis (ongoing)<br />
**eCloud:<br />
*:-lit review<br />
*:-email CERN questions related to PyECLOUD results<br />
*:-nag people for codes<br />
*:-generated two main cases (60 GeV CM with stainless steel and NEG-coated)<br />
*:-working on corresponding text for preCDR<br />
**Impedance:<br />
*:-look into kicker count for other machines (feedback (transverse and longitudinal), injection, abort) to add into estimates<br />
**Meetings:<br />
*:-Cooler (x2)<br />
*:-CASA<br />
*:-JLEIC<br />
**Misc:<br />
*:-agreed to act as GPT help for two summer students (minimal)<br />
*Next two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-finish quantifying magnetization<br />
*:-run optimizer for 3D FEL booster to fix off-axis/magnetization<br />
**Straight Merger at CBETA:<br />
*:-data analysis<br />
*:-ask George B. about status of field map for coils<br />
*eClould:<br />
*:-calculate tune shift for corresponding densities of eCloud<br />
*:-finish text for preCDR<br />
**Impedance:<br />
*:-add kickers, RF valves into estimates<br />
*:-make best/worst case scenario for electron ring<br />
*:-put out call for presentations for next meeting (June 25)<br />
**Meetings:<br />
*:-Cooler (x2)<br />
*:-JLEIC (x1-2)<br />
*Misc:<br />
*:-Vacation on June 18th<br />
<br><br />
Yves Roblin:<br />
*CEBAF:<br />
*:-TOSCA versus ELEGANT. writing a note on how to go from one to the other.<br />
*:-2R investigation: Working with J. Benesch to generate the higher order multipoles for all dipoles in the machine using TOSCA models. The idea is to incorporate that into the ELEGANT model. As a first step, I used TOSCA to calculate the same quantity that the 12GeV magnet team used (B'L/BL) and compared with actual measurements provided by K. Bagget. The agreement is good so we are proceeding with using TOSCA to specify the other multipoles (up to decapole). preliminary tracking with multipoles in the S/R magnets qualitatively reproduce features that are commonly seen in the FOPT's.<br />
*:-Worked with M. Tiefenback on optimizing ELEGANT command files for the simulation and use of synchrotron light monitors. Found a few oddities in ELEGANT, working to resolve it.<br />
*:-Met with Thia Keppel, Arne F., D. HigginBotham, M. Tiefenback to find a way to run an Hall A experiment which requires only a few hours of beam at less than 1GeV. We are thinking of running with SL off and also using that opportunity to cross-calibrate ARC1,ARC2 and the hall dipoles strings (1C and 3C). Arne has set aside time the first 2 weeks of August to do the setup in tune mode in order to prepare for the actual experiment (sometimes in november).<br />
*:-Working on transitioning leadership of BTEAM from Todd Satogata to myself. Preparing mid and long term goals up to late 2019. Some of the coming challenges are: several energy changes this year, hyper nuclear end of year requiring low energy spread, next year we will have to deliver parity quality beam at 1 pass while running at 5 pass in other halls. Discussions about this have started. All of this is within the context of a push for model and CED improvements.<br />
*JLEIC:<br />
*:-preparing for the FOA work. First quarter is to implement a higher order tracking in beambeam3d. This will reuse what we already did for GHOST, including the recent work He Zhang has been doing.<br />
*:-continuing pCDR work.<br />
*:-Help C. Tennant to configure his CSR distribution smoothing script on the qcd farm. (on Ops, he could only process 1 million particles, he needs to process in the tens of millions)<br />
*OTHER:<br />
*:-sick leave 6/7, leave 6/8<br />
<br><br />
He Zhang:<br />
*Fast multipole method<br />
*:-Used the single level FMM code to solve Yukawa potential problem. The code works as expected. One only needs to revise the kernel function and do not need to change anything else. Then I read a few materials to understand how the Stokes kernel works and I am trying to solve the problem using the FMM code. It looks straightforward, but we need to calculate three kernel functions. Although we can do it one by one, but the proper way is to calculate them all together for better efficiency. Needs some coding to make it happen. <br />
*:-pCDR writing<br />
*:-Did simulations for the low energy DC cooling in the booster and wrote the draft for this section. Polishing the other sections. One more section left: Optimization of the electron cooling efficiency. <br />
*Beam-beam code development<br />
*:-Revise the COSY Script file so that Vasiliy and Balsa can generate high order maps and differential equations from the generating function. Vasiliy suggests finally they want to use MADX to generate the map. But it is not clear how to construct the generating function and the differential equations in MADX. So I wrote c++ code to construct the generating function from the truncated map. The procedure includes (1) read the truncated map from a input file; (2) convert the map into a differential algebra (DA) vector; (3) construct the 2nd kind of generation function (DA vector); (4) construct the differential equations (DA vectors); and (5) convert the differential equations into the “map” data type. Step (3) and (4) include many DA operations, so the TPSA code I wrote previously is used. The code is almost done. Tested with a 4D map, it generates exactly the same generating function with COSY. For the specific 6D map for JLEIC p ring, the generating function of this new code has an extra term “010010” when compared with the one by COSY. The coefficient is at least eight orders smaller than those of other terms. So it may be a numerical phenomena and does not affect the symplectic tracking. This needs to be checked. I will test a few cases before I delivery the code.<br />
*:-As a byproduct, a deeply hidden bug in the TPSA package is founded and fixed. Some new functions are added, such as take derivative of DA vector w.r.t. a base, integrate a DA vector w.r.t. a base, calculate the inverse map of a given DA map. The updates has been pushed to github.<br />
*Work plan in the following two weeks<br />
*:-Continue writing and polishing the pCDR report<br />
*:-Some coding for the kernel-independent FMM<br />
*:-Dust particle transport<br />
*:-Understand the dispersive cooling theory<br />
<br><br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
''No report.''<br />
<br />
----<br />
'''LERF - S. Benson''' <br><br />
*May 29-June 8<br />
*:-Prepared budget for isotope project<br />
*:-Completed question answers for LDRD proposals<br />
*:-Reviewed a couple of AIP papers<br />
*:-Worked on cleaning up the LERF and preparing for the DOE visit<br />
*:-Held meeting on scope of budget of isotope project and wrote up minutes<br />
*:-Hosted cooling ring meetings on May 30 and June 6 and wrote up minutes<br />
*:-Met with facilities to review facility needs for cooler ring<br />
*:-Worked on section 7.3 of pCDR<br />
*June 11-22<br />
*:-Help to host DOE visit for Isotope studies<br />
*:-Arrange for collaboration with HZDR for Elbe II facility.<br />
*:-Revise LOD to match new ASE document.<br />
*:-Continue to revise section 7.3 of pCDR<br />
*:-Work with A. Ungaro to get AWP information into the system</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-06-08&diff=8072018-06-082018-06-11T13:26:22Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata''' <br><br />
''No report.'' Acting Accelerator Department Head<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata''' <br><br />
Todd Satogata<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: Further organize ICFA beam dynamics newsletter input<br />
- ADMIN: Summer student setting in, work planning<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: CASA group meeting (Jun 6)<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
- IPAC18: Finalize proceedings, delegate survey report<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: Further organize ICFA beam dynamics newsletter input<br />
- OPS: TAC review of PAC proposals, transfer BTeam to Yves<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
- JACoW: Plan Board of Directors telecon (late June)<br />
- ADMIN: HPI Training (Jul 15), Andre Seryi meeting (Jun 18)<br />
- ER@CEBAF: Work on coordination of magnet acquisition from Cornell<br />
<br />
Alex Bogacz<br />
Previous two weeks (May 28-June 8)<br />
- ADMIN: Summer student lecture prep, lecture (June 5)<br />
- IPAC18: Light peer review paper final checks and delivery<br />
- LHEC: Work on paper on LHeC ERL scaling<br />
Next two weeks (June 11-June 22)<br />
- ADMIN: Work on talk for muon acceleration<br />
- PERLE: Work on talk for PERLE<br />
- IPAC18: Submit light peer review papers to IOP for processing<br />
<br />
Rui Li<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: Work on pCDR writeup<br />
- JLEIC: Calculate ion coupled bunch instability growth rates with<br />
new HOM design from Marhauser<br />
- JLEIC: Work on ICFA newsletter section on beam dynamics in JLEIC rings<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Continue ion coupled bunch instability growth rates with<br />
new HOM design from Marhauser<br />
- JLEIC: Work on ICFA newsletter section on beam dynamics in JLEIC rings<br />
<br />
Ed Nissen<br />
Previous two weeks (May 28-June 8)<br />
- ADMIN: Summer student setting in, work planning, reading up on pyORBIT<br />
- JLEIC: Continue Booster acceleration simulations<br />
- JLEIC: Continue booster nonlinear optimization work<br />
- JLEIC: Finish draft writing for pCDR for Booster section<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Polishing presentation for LDRD committee, presentation<br />
- JLEIC: pCDR Booster consistency updates<br />
- JLEIC: Start looking at Booster injection design with summer student<br />
<br />
Chris Tennant<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: investigate effect of using 2x longer bunch in CCR<br />
- JLEIC: begin pushing a realistic (via Fay) bunch through ERL<br />
driver of CCR and assess performance (i.e. will it make it<br />
around the first arc, let alone make it to the CCR?)<br />
- PERLE: Vlasov and elegant tracking to get uBI gain in PERLE first pass<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Work with Dave to sort out CCR beam exchange<br />
- JLEIC: Input distribution from Fay for ERL tracking (and CCR?)<br />
- LERF: Read up on documents related to being LERF APEL<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang''' <br><br />
''No report.''<br />
<br />
<br />
----<br />
'''Computational Physics - Y. Roblin''' <br><br />
Kirsten Dietrich:<br />
*Last two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-trying to correct magnetization damage after FEL booster with off-axis travel through skew quad<br />
*:-trip into LERF vault to locate corrector magnets in current beamline<br />
*:-start trying to quantify magnetization (to better run the optimizer)<br />
**Straight Merger at CBeta:<br />
*:-data analysis (ongoing)<br />
**eCloud:<br />
*:-lit review<br />
*:-email CERN questions related to PyECLOUD results<br />
*:-nag people for codes<br />
*:-generated two main cases (60 GeV CM with stainless steel and NEG-coated)<br />
*:-working on corresponding text for preCDR<br />
**Impedance:<br />
*:-look into kicker count for other machines (feedback (transverse and longitudinal), injection, abort) to add into estimates<br />
**Meetings:<br />
*:-Cooler (x2)<br />
*:-CASA<br />
*:-JLEIC<br />
**Misc:<br />
*:-agreed to act as GPT help for two summer students (minimal)<br />
*Next two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-finish quantifying magnetization<br />
*:-run optimizer for 3D FEL booster to fix off-axis/magnetization<br />
**Straight Merger at CBETA:<br />
*:-data analysis<br />
*:-ask George B. about status of field map for coils<br />
*eClould:<br />
*:-calculate tune shift for corresponding densities of eCloud<br />
*:-finish text for preCDR<br />
**Impedance:<br />
*:-add kickers, RF valves into estimates<br />
*:-make best/worst case scenario for electron ring<br />
*:-put out call for presentations for next meeting (June 25)<br />
**Meetings:<br />
*:-Cooler (x2)<br />
*:-JLEIC (x1-2)<br />
*Misc:<br />
*:-Vacation on June 18th<br />
<br><br />
Yves Roblin:<br />
*CEBAF:<br />
*:-TOSCA versus ELEGANT. writing a note on how to go from one to the other.<br />
*:-2R investigation: Working with J. Benesch to generate the higher order multipoles for all dipoles in the machine using TOSCA models. The idea is to incorporate that into the ELEGANT model. As a first step, I used TOSCA to calculate the same quantity that the 12GeV magnet team used (B'L/BL) and compared with actual measurements provided by K. Bagget. The agreement is good so we are proceeding with using TOSCA to specify the other multipoles (up to decapole). preliminary tracking with multipoles in the S/R magnets qualitatively reproduce features that are commonly seen in the FOPT's.<br />
*:-Worked with M. Tiefenback on optimizing ELEGANT command files for the simulation and use of synchrotron light monitors. Found a few oddities in ELEGANT, working to resolve it.<br />
*:-Met with Thia Keppel, Arne F., D. HigginBotham, M. Tiefenback to find a way to run an Hall A experiment which requires only a few hours of beam at less than 1GeV. We are thinking of running with SL off and also using that opportunity to cross-calibrate ARC1,ARC2 and the hall dipoles strings (1C and 3C). Arne has set aside time the first 2 weeks of August to do the setup in tune mode in order to prepare for the actual experiment (sometimes in november).<br />
*:-Working on transitioning leadership of BTEAM from Todd Satogata to myself. Preparing mid and long term goals up to late 2019. Some of the coming challenges are: several energy changes this year, hyper nuclear end of year requiring low energy spread, next year we will have to deliver parity quality beam at 1 pass while running at 5 pass in other halls. Discussions about this have started. All of this is within the context of a push for model and CED improvements.<br />
*JLEIC:<br />
*:-preparing for the FOA work. First quarter is to implement a higher order tracking in beambeam3d. This will reuse what we already did for GHOST, including the recent work He Zhang has been doing.<br />
*:-continuing pCDR work.<br />
*:-Help C. Tennant to configure his CSR distribution smoothing script on the qcd farm. (on Ops, he could only process 1 million particles, he needs to process in the tens of millions)<br />
*OTHER:<br />
*:-sick leave 6/7, leave 6/8<br />
<br><br />
He Zhang:<br />
*Fast multipole method<br />
*:-Used the single level FMM code to solve Yukawa potential problem. The code works as expected. One only needs to revise the kernel function and do not need to change anything else. Then I read a few materials to understand how the Stokes kernel works and I am trying to solve the problem using the FMM code. It looks straightforward, but we need to calculate three kernel functions. Although we can do it one by one, but the proper way is to calculate them all together for better efficiency. Needs some coding to make it happen. <br />
*:-pCDR writing<br />
*:-Did simulations for the low energy DC cooling in the booster and wrote the draft for this section. Polishing the other sections. One more section left: Optimization of the electron cooling efficiency. <br />
*Beam-beam code development<br />
*:-Revise the COSY Script file so that Vasiliy and Balsa can generate high order maps and differential equations from the generating function. Vasiliy suggests finally they want to use MADX to generate the map. But it is not clear how to construct the generating function and the differential equations in MADX. So I wrote c++ code to construct the generating function from the truncated map. The procedure includes (1) read the truncated map from a input file; (2) convert the map into a differential algebra (DA) vector; (3) construct the 2nd kind of generation function (DA vector); (4) construct the differential equations (DA vectors); and (5) convert the differential equations into the “map” data type. Step (3) and (4) include many DA operations, so the TPSA code I wrote previously is used. The code is almost done. Tested with a 4D map, it generates exactly the same generating function with COSY. For the specific 6D map for JLEIC p ring, the generating function of this new code has an extra term “010010” when compared with the one by COSY. The coefficient is at least eight orders smaller than those of other terms. So it may be a numerical phenomena and does not affect the symplectic tracking. This needs to be checked. I will test a few cases before I delivery the code.<br />
*:-As a byproduct, a deeply hidden bug in the TPSA package is founded and fixed. Some new functions are added, such as take derivative of DA vector w.r.t. a base, integrate a DA vector w.r.t. a base, calculate the inverse map of a given DA map. The updates has been pushed to github.<br />
*Work plan in the following two weeks<br />
*:-Continue writing and polishing the pCDR report<br />
*:-Some coding for the kernel-independent FMM<br />
*:-Dust particle transport<br />
*:-Understand the dispersive cooling theory<br />
<br><br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
''No report.''<br />
<br />
----<br />
'''LERF - S. Benson''' <br><br />
*May 29-June 8<br />
*:-Prepared budget for isotope project<br />
*:-Completed question answers for LDRD proposals<br />
*:-Reviewed a couple of AIP papers<br />
*:-Worked on cleaning up the LERF and preparing for the DOE visit<br />
*:-Held meeting on scope of budget of isotope project and wrote up minutes<br />
*:-Hosted cooling ring meetings on May 30 and June 6 and wrote up minutes<br />
*:-Met with facilities to review facility needs for cooler ring<br />
*:-Worked on section 7.3 of pCDR<br />
*June 11-22<br />
*:-Help to host DOE visit for Isotope studies<br />
*:-Arrange for collaboration with HZDR for Elbe II facility.<br />
*:-Revise LOD to match new ASE document.<br />
*:-Continue to revise section 7.3 of pCDR<br />
*:-Work with A. Ungaro to get AWP information into the system</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-06-08&diff=8062018-06-082018-06-11T13:25:23Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata''' <br><br />
''No report.'' Acting Accelerator Department Head<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata''' <br><br />
Todd Satogata<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: Further organize ICFA beam dynamics newsletter input<br />
- ADMIN: Summer student setting in, work planning<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: CASA group meeting (Jun 6)<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
- IPAC18: Finalize proceedings, delegate survey report<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: Further organize ICFA beam dynamics newsletter input<br />
- OPS: TAC review of PAC proposals, transfer BTeam to Yves<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
- JACoW: Plan Board of Directors telecon (late June)<br />
- ADMIN: HPI Training (Jul 15), Andre Seryi meeting (Jun 18)<br />
- ER@CEBAF: Work on coordination of magnet acquisition from Cornell<br />
<br />
Alex Bogacz<br />
Previous two weeks (May 28-June 8)<br />
- ADMIN: Summer student lecture prep, lecture (June 5)<br />
- IPAC18: Light peer review paper final checks and delivery<br />
- LHEC: Work on paper on LHeC ERL scaling<br />
Next two weeks (June 11-June 22)<br />
- ADMIN: Work on talk for muon acceleration<br />
- PERLE: Work on talk for PERLE<br />
- IPAC18: Submit light peer review papers to IOP for processing<br />
<br />
Rui Li<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: Work on pCDR writeup<br />
- JLEIC: Calculate ion coupled bunch instability growth rates with<br />
new HOM design from Marhauser<br />
- JLEIC: Work on ICFA newsletter section on beam dynamics in JLEIC rings<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Continue ion coupled bunch instability growth rates with<br />
new HOM design from Marhauser<br />
- JLEIC: Work on ICFA newsletter section on beam dynamics in JLEIC rings<br />
<br />
Ed Nissen<br />
Previous two weeks (May 28-June 8)<br />
- ADMIN: Summer student setting in, work planning, reading up on pyORBIT<br />
- JLEIC: Continue Booster acceleration simulations<br />
- JLEIC: Continue booster nonlinear optimization work<br />
- JLEIC: Finish draft writing for pCDR for Booster section<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Polishing presentation for LDRD committee, presentation<br />
- JLEIC: pCDR Booster consistency updates<br />
- JLEIC: Start looking at Booster injection design with summer student<br />
<br />
Chris Tennant<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: investigate effect of using 2x longer bunch in CCR<br />
- JLEIC: begin pushing a realistic (via Fay) bunch through ERL<br />
driver of CCR and assess performance (i.e. will it make it<br />
around the first arc, let alone make it to the CCR?)<br />
- PERLE: Vlasov and elegant tracking to get uBI gain in PERLE first pass<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Work with Dave to sort out CCR beam exchange<br />
- JLEIC: Input distribution from Fay for ERL tracking (and CCR?)<br />
- LERF: Read up on documents related to being LERF APEL<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang''' <br><br />
<br />
<br />
<br />
----<br />
'''Computational Physics - Y. Roblin''' <br><br />
Kirsten Dietrich:<br />
*Last two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-trying to correct magnetization damage after FEL booster with off-axis travel through skew quad<br />
*:-trip into LERF vault to locate corrector magnets in current beamline<br />
*:-start trying to quantify magnetization (to better run the optimizer)<br />
**Straight Merger at CBeta:<br />
*:-data analysis (ongoing)<br />
**eCloud:<br />
*:-lit review<br />
*:-email CERN questions related to PyECLOUD results<br />
*:-nag people for codes<br />
*:-generated two main cases (60 GeV CM with stainless steel and NEG-coated)<br />
*:-working on corresponding text for preCDR<br />
**Impedance:<br />
*:-look into kicker count for other machines (feedback (transverse and longitudinal), injection, abort) to add into estimates<br />
**Meetings:<br />
*:-Cooler (x2)<br />
*:-CASA<br />
*:-JLEIC<br />
**Misc:<br />
*:-agreed to act as GPT help for two summer students (minimal)<br />
*Next two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-finish quantifying magnetization<br />
*:-run optimizer for 3D FEL booster to fix off-axis/magnetization<br />
**Straight Merger at CBETA:<br />
*:-data analysis<br />
*:-ask George B. about status of field map for coils<br />
*eClould:<br />
*:-calculate tune shift for corresponding densities of eCloud<br />
*:-finish text for preCDR<br />
**Impedance:<br />
*:-add kickers, RF valves into estimates<br />
*:-make best/worst case scenario for electron ring<br />
*:-put out call for presentations for next meeting (June 25)<br />
**Meetings:<br />
*:-Cooler (x2)<br />
*:-JLEIC (x1-2)<br />
*Misc:<br />
*:-Vacation on June 18th<br />
<br><br />
Yves Roblin:<br />
*CEBAF:<br />
*:-TOSCA versus ELEGANT. writing a note on how to go from one to the other.<br />
*:-2R investigation: Working with J. Benesch to generate the higher order multipoles for all dipoles in the machine using TOSCA models. The idea is to incorporate that into the ELEGANT model. As a first step, I used TOSCA to calculate the same quantity that the 12GeV magnet team used (B'L/BL) and compared with actual measurements provided by K. Bagget. The agreement is good so we are proceeding with using TOSCA to specify the other multipoles (up to decapole). preliminary tracking with multipoles in the S/R magnets qualitatively reproduce features that are commonly seen in the FOPT's.<br />
*:-Worked with M. Tiefenback on optimizing ELEGANT command files for the simulation and use of synchrotron light monitors. Found a few oddities in ELEGANT, working to resolve it.<br />
*:-Met with Thia Keppel, Arne F., D. HigginBotham, M. Tiefenback to find a way to run an Hall A experiment which requires only a few hours of beam at less than 1GeV. We are thinking of running with SL off and also using that opportunity to cross-calibrate ARC1,ARC2 and the hall dipoles strings (1C and 3C). Arne has set aside time the first 2 weeks of August to do the setup in tune mode in order to prepare for the actual experiment (sometimes in november).<br />
*:-Working on transitioning leadership of BTEAM from Todd Satogata to myself. Preparing mid and long term goals up to late 2019. Some of the coming challenges are: several energy changes this year, hyper nuclear end of year requiring low energy spread, next year we will have to deliver parity quality beam at 1 pass while running at 5 pass in other halls. Discussions about this have started. All of this is within the context of a push for model and CED improvements.<br />
*JLEIC:<br />
*:-preparing for the FOA work. First quarter is to implement a higher order tracking in beambeam3d. This will reuse what we already did for GHOST, including the recent work He Zhang has been doing.<br />
*:-continuing pCDR work.<br />
*:-Help C. Tennant to configure his CSR distribution smoothing script on the qcd farm. (on Ops, he could only process 1 million particles, he needs to process in the tens of millions)<br />
*OTHER:<br />
*:-sick leave 6/7, leave 6/8<br />
<br><br />
He Zhang:<br />
*Fast multipole method<br />
*:-Used the single level FMM code to solve Yukawa potential problem. The code works as expected. One only needs to revise the kernel function and do not need to change anything else. Then I read a few materials to understand how the Stokes kernel works and I am trying to solve the problem using the FMM code. It looks straightforward, but we need to calculate three kernel functions. Although we can do it one by one, but the proper way is to calculate them all together for better efficiency. Needs some coding to make it happen. <br />
*:-pCDR writing<br />
*:-Did simulations for the low energy DC cooling in the booster and wrote the draft for this section. Polishing the other sections. One more section left: Optimization of the electron cooling efficiency. <br />
*Beam-beam code development<br />
*:-Revise the COSY Script file so that Vasiliy and Balsa can generate high order maps and differential equations from the generating function. Vasiliy suggests finally they want to use MADX to generate the map. But it is not clear how to construct the generating function and the differential equations in MADX. So I wrote c++ code to construct the generating function from the truncated map. The procedure includes (1) read the truncated map from a input file; (2) convert the map into a differential algebra (DA) vector; (3) construct the 2nd kind of generation function (DA vector); (4) construct the differential equations (DA vectors); and (5) convert the differential equations into the “map” data type. Step (3) and (4) include many DA operations, so the TPSA code I wrote previously is used. The code is almost done. Tested with a 4D map, it generates exactly the same generating function with COSY. For the specific 6D map for JLEIC p ring, the generating function of this new code has an extra term “010010” when compared with the one by COSY. The coefficient is at least eight orders smaller than those of other terms. So it may be a numerical phenomena and does not affect the symplectic tracking. This needs to be checked. I will test a few cases before I delivery the code.<br />
*:-As a byproduct, a deeply hidden bug in the TPSA package is founded and fixed. Some new functions are added, such as take derivative of DA vector w.r.t. a base, integrate a DA vector w.r.t. a base, calculate the inverse map of a given DA map. The updates has been pushed to github.<br />
*Work plan in the following two weeks<br />
*:-Continue writing and polishing the pCDR report<br />
*:-Some coding for the kernel-independent FMM<br />
*:-Dust particle transport<br />
*:-Understand the dispersive cooling theory<br />
<br><br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
<br />
<br />
<br />
----<br />
'''LERF - S. Benson''' <br><br />
*May 29-June 8<br />
*:-Prepared budget for isotope project<br />
*:-Completed question answers for LDRD proposals<br />
*:-Reviewed a couple of AIP papers<br />
*:-Worked on cleaning up the LERF and preparing for the DOE visit<br />
*:-Held meeting on scope of budget of isotope project and wrote up minutes<br />
*:-Hosted cooling ring meetings on May 30 and June 6 and wrote up minutes<br />
*:-Met with facilities to review facility needs for cooler ring<br />
*:-Worked on section 7.3 of pCDR<br />
<br />
*June 11-22<br />
*:-Help to host DOE visit for Isotope studies<br />
*:-Arrange for collaboration with HZDR for Elbe II facility.<br />
*:-Revise LOD to match new ASE document.<br />
*:-Continue to revise section 7.3 of pCDR<br />
*:-Work with A. Ungaro to get AWP information into the system</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-06-08&diff=8052018-06-082018-06-11T13:22:05Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata''' <br><br />
''No report.'' Acting Accelerator Department Head<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata''' <br><br />
Todd Satogata<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: Further organize ICFA beam dynamics newsletter input<br />
- ADMIN: Summer student setting in, work planning<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: CASA group meeting (Jun 6)<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
- IPAC18: Finalize proceedings, delegate survey report<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: Further organize ICFA beam dynamics newsletter input<br />
- OPS: TAC review of PAC proposals, transfer BTeam to Yves<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
- JACoW: Plan Board of Directors telecon (late June)<br />
- ADMIN: HPI Training (Jul 15), Andre Seryi meeting (Jun 18)<br />
- ER@CEBAF: Work on coordination of magnet acquisition from Cornell<br />
<br />
Alex Bogacz<br />
Previous two weeks (May 28-June 8)<br />
- ADMIN: Summer student lecture prep, lecture (June 5)<br />
- IPAC18: Light peer review paper final checks and delivery<br />
- LHEC: Work on paper on LHeC ERL scaling<br />
Next two weeks (June 11-June 22)<br />
- ADMIN: Work on talk for muon acceleration<br />
- PERLE: Work on talk for PERLE<br />
- IPAC18: Submit light peer review papers to IOP for processing<br />
<br />
Rui Li<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: Work on pCDR writeup<br />
- JLEIC: Calculate ion coupled bunch instability growth rates with<br />
new HOM design from Marhauser<br />
- JLEIC: Work on ICFA newsletter section on beam dynamics in JLEIC rings<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Continue ion coupled bunch instability growth rates with<br />
new HOM design from Marhauser<br />
- JLEIC: Work on ICFA newsletter section on beam dynamics in JLEIC rings<br />
<br />
Ed Nissen<br />
Previous two weeks (May 28-June 8)<br />
- ADMIN: Summer student setting in, work planning, reading up on pyORBIT<br />
- JLEIC: Continue Booster acceleration simulations<br />
- JLEIC: Continue booster nonlinear optimization work<br />
- JLEIC: Finish draft writing for pCDR for Booster section<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Polishing presentation for LDRD committee, presentation<br />
- JLEIC: pCDR Booster consistency updates<br />
- JLEIC: Start looking at Booster injection design with summer student<br />
<br />
Chris Tennant<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: investigate effect of using 2x longer bunch in CCR<br />
- JLEIC: begin pushing a realistic (via Fay) bunch through ERL<br />
driver of CCR and assess performance (i.e. will it make it<br />
around the first arc, let alone make it to the CCR?)<br />
- PERLE: Vlasov and elegant tracking to get uBI gain in PERLE first pass<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Work with Dave to sort out CCR beam exchange<br />
- JLEIC: Input distribution from Fay for ERL tracking (and CCR?)<br />
- LERF: Read up on documents related to being LERF APEL<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang''' <br><br />
<br />
<br />
<br />
----<br />
'''Computational Physics - Y. Roblin''' <br><br />
Kirsten Dietrich:<br />
*Last two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-trying to correct magnetization damage after FEL booster with off-axis travel through skew quad<br />
*:-trip into LERF vault to locate corrector magnets in current beamline<br />
*:-start trying to quantify magnetization (to better run the optimizer)<br />
**Straight Merger at CBeta:<br />
*:-data analysis (ongoing)<br />
**eCloud:<br />
*:-lit review<br />
*:-email CERN questions related to PyECLOUD results<br />
*:-nag people for codes<br />
*:-generated two main cases (60 GeV CM with stainless steel and NEG-coated)<br />
*:-working on corresponding text for preCDR<br />
**Impedance:<br />
*:-look into kicker count for other machines (feedback (transverse and longitudinal), injection, abort) to add into estimates<br />
**Meetings:<br />
*:-Cooler (x2)<br />
*:-CASA<br />
*:-JLEIC<br />
**Misc:<br />
*:-agreed to act as GPT help for two summer students (minimal)<br />
*Next two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-finish quantifying magnetization<br />
*:-run optimizer for 3D FEL booster to fix off-axis/magnetization<br />
**Straight Merger at CBETA:<br />
*:-data analysis<br />
*:-ask George B. about status of field map for coils<br />
*eClould:<br />
*:-calculate tune shift for corresponding densities of eCloud<br />
*:-finish text for preCDR<br />
**Impedance:<br />
*:-add kickers, RF valves into estimates<br />
*:-make best/worst case scenario for electron ring<br />
*:-put out call for presentations for next meeting (June 25)<br />
**Meetings:<br />
*:-Cooler (x2)<br />
*:-JLEIC (x1-2)<br />
*Misc:<br />
*:-Vacation on June 18th<br />
<br><br />
Yves Roblin:<br />
*CEBAF:<br />
*:-TOSCA versus ELEGANT. writing a note on how to go from one to the other.<br />
*:-2R investigation: Working with J. Benesch to generate the higher order multipoles for all dipoles in the machine using TOSCA models. The idea is to incorporate that into the ELEGANT model. As a first step, I used TOSCA to calculate the same quantity that the 12GeV magnet team used (B'L/BL) and compared with actual measurements provided by K. Bagget. The agreement is good so we are proceeding with using TOSCA to specify the other multipoles (up to decapole). preliminary tracking with multipoles in the S/R magnets qualitatively reproduce features that are commonly seen in the FOPT's.<br />
*:-Worked with M. Tiefenback on optimizing ELEGANT command files for the simulation and use of synchrotron light monitors. Found a few oddities in ELEGANT, working to resolve it.<br />
*:-Met with Thia Keppel, Arne F., D. HigginBotham, M. Tiefenback to find a way to run an Hall A experiment which requires only a few hours of beam at less than 1GeV. We are thinking of running with SL off and also using that opportunity to cross-calibrate ARC1,ARC2 and the hall dipoles strings (1C and 3C). Arne has set aside time the first 2 weeks of August to do the setup in tune mode in order to prepare for the actual experiment (sometimes in november).<br />
*:-Working on transitioning leadership of BTEAM from Todd Satogata to myself. Preparing mid and long term goals up to late 2019. Some of the coming challenges are: several energy changes this year, hyper nuclear end of year requiring low energy spread, next year we will have to deliver parity quality beam at 1 pass while running at 5 pass in other halls. Discussions about this have started. All of this is within the context of a push for model and CED improvements.<br />
*JLEIC:<br />
*:-preparing for the FOA work. First quarter is to implement a higher order tracking in beambeam3d. This will reuse what we already did for GHOST, including the recent work He Zhang has been doing.<br />
*:-continuing pCDR work.<br />
*:-Help C. Tennant to configure his CSR distribution smoothing script on the qcd farm. (on Ops, he could only process 1 million particles, he needs to process in the tens of millions)<br />
*OTHER:<br />
*:-sick leave 6/7, leave 6/8<br />
<br><br />
He Zhang:<br />
*Fast multipole method<br />
*:-Used the single level FMM code to solve Yukawa potential problem. The code works as expected. One only needs to revise the kernel function and do not need to change anything else. Then I read a few materials to understand how the Stokes kernel works and I am trying to solve the problem using the FMM code. It looks straightforward, but we need to calculate three kernel functions. Although we can do it one by one, but the proper way is to calculate them all together for better efficiency. Needs some coding to make it happen. <br />
*:-pCDR writing<br />
*:-Did simulations for the low energy DC cooling in the booster and wrote the draft for this section. Polishing the other sections. One more section left: Optimization of the electron cooling efficiency. <br />
*Beam-beam code development<br />
*:-Revise the COSY Script file so that Vasiliy and Balsa can generate high order maps and differential equations from the generating function. Vasiliy suggests finally they want to use MADX to generate the map. But it is not clear how to construct the generating function and the differential equations in MADX. So I wrote c++ code to construct the generating function from the truncated map. The procedure includes (1) read the truncated map from a input file; (2) convert the map into a differential algebra (DA) vector; (3) construct the 2nd kind of generation function (DA vector); (4) construct the differential equations (DA vectors); and (5) convert the differential equations into the “map” data type. Step (3) and (4) include many DA operations, so the TPSA code I wrote previously is used. The code is almost done. Tested with a 4D map, it generates exactly the same generating function with COSY. For the specific 6D map for JLEIC p ring, the generating function of this new code has an extra term “010010” when compared with the one by COSY. The coefficient is at least eight orders smaller than those of other terms. So it may be a numerical phenomena and does not affect the symplectic tracking. This needs to be checked. I will test a few cases before I delivery the code.<br />
*:-As a byproduct, a deeply hidden bug in the TPSA package is founded and fixed. Some new functions are added, such as take derivative of DA vector w.r.t. a base, integrate a DA vector w.r.t. a base, calculate the inverse map of a given DA map. The updates has been pushed to github.<br />
*Work plan in the following two weeks<br />
*:-Continue writing and polishing the pCDR report<br />
*:-Some coding for the kernel-independent FMM<br />
*:-Dust particle transport<br />
*:-Understand the dispersive cooling theory<br />
<br><br />
<br />
<br />
<br />
<br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
<br />
<br />
<br />
----<br />
'''LERF - S. Benson''' <br></div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-06-08&diff=8042018-06-082018-06-11T13:06:05Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata''' <br><br />
''No report.'' Acting Accelerator Department Head<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata''' <br><br />
Todd Satogata<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: Further organize ICFA beam dynamics newsletter input<br />
- ADMIN: Summer student setting in, work planning<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: CASA group meeting (Jun 6)<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
- IPAC18: Finalize proceedings, delegate survey report<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: Further organize ICFA beam dynamics newsletter input<br />
- OPS: TAC review of PAC proposals, transfer BTeam to Yves<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
- JACoW: Plan Board of Directors telecon (late June)<br />
- ADMIN: HPI Training (Jul 15), Andre Seryi meeting (Jun 18)<br />
- ER@CEBAF: Work on coordination of magnet acquisition from Cornell<br />
<br />
Alex Bogacz<br />
Previous two weeks (May 28-June 8)<br />
- ADMIN: Summer student lecture prep, lecture (June 5)<br />
- IPAC18: Light peer review paper final checks and delivery<br />
- LHEC: Work on paper on LHeC ERL scaling<br />
Next two weeks (June 11-June 22)<br />
- ADMIN: Work on talk for muon acceleration<br />
- PERLE: Work on talk for PERLE<br />
- IPAC18: Submit light peer review papers to IOP for processing<br />
<br />
Rui Li<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: Work on pCDR writeup<br />
- JLEIC: Calculate ion coupled bunch instability growth rates with<br />
new HOM design from Marhauser<br />
- JLEIC: Work on ICFA newsletter section on beam dynamics in JLEIC rings<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Continue ion coupled bunch instability growth rates with<br />
new HOM design from Marhauser<br />
- JLEIC: Work on ICFA newsletter section on beam dynamics in JLEIC rings<br />
<br />
Ed Nissen<br />
Previous two weeks (May 28-June 8)<br />
- ADMIN: Summer student setting in, work planning, reading up on pyORBIT<br />
- JLEIC: Continue Booster acceleration simulations<br />
- JLEIC: Continue booster nonlinear optimization work<br />
- JLEIC: Finish draft writing for pCDR for Booster section<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Polishing presentation for LDRD committee, presentation<br />
- JLEIC: pCDR Booster consistency updates<br />
- JLEIC: Start looking at Booster injection design with summer student<br />
<br />
Chris Tennant<br />
Previous two weeks (May 28-June 8)<br />
- JLEIC: investigate effect of using 2x longer bunch in CCR<br />
- JLEIC: begin pushing a realistic (via Fay) bunch through ERL<br />
driver of CCR and assess performance (i.e. will it make it<br />
around the first arc, let alone make it to the CCR?)<br />
- PERLE: Vlasov and elegant tracking to get uBI gain in PERLE first pass<br />
Next two weeks (June 11-June 22)<br />
- JLEIC: Work with Dave to sort out CCR beam exchange<br />
- JLEIC: Input distribution from Fay for ERL tracking (and CCR?)<br />
- LERF: Read up on documents related to being LERF APEL<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang''' <br><br />
<br />
<br />
<br />
----<br />
'''Computational Physics - Y. Roblin''' <br><br />
<br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
<br />
<br />
<br />
----<br />
'''LERF - S. Benson''' <br></div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-06-08&diff=8032018-06-082018-06-11T13:05:24Z<p>Anichols: Created page with "'''Director - M. Spata''' <br> ''No report.'' Acting Accelerator Department Head ---- '''Accelerator Physics - T. Satogata''' <br> ---- '''Accelerator R &amp; D - Y. Zha..."</p>
<hr />
<div>'''Director - M. Spata''' <br><br />
''No report.'' Acting Accelerator Department Head<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata''' <br><br />
<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang''' <br><br />
<br />
<br />
<br />
----<br />
'''Computational Physics - Y. Roblin''' <br><br />
<br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
<br />
<br />
<br />
----<br />
'''LERF - S. Benson''' <br></div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018&diff=80220182018-06-11T13:02:22Z<p>Anichols: </p>
<hr />
<div><br />
[[2018-06-08]]<br><br />
[[2018-05-25]]<br><br />
[[2018-05-11]]<br><br />
[[2018-04-27]]<br><br />
[[2018-04-13]]<br><br />
[[2018-03-30]]<br><br />
[[2018-03-16]]<br><br />
[[2018-03-02]]<br><br />
[[2018-02-16]]<br><br />
[[2018-02-02]]<br><br />
[[2018-01-22]]<br></div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-05-25&diff=8012018-05-252018-05-31T13:08:25Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata''' <br><br />
''No report''. Acting Accelerator Department Head<br />
<br />
<br />
----<br />
'''Accelerator Physics &amp; Acting CASA Department Head - T. Satogata''' <br><br />
Todd Satogata<br />
Previous two weeks (May 14-May 25)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: P&C Meeting (May 21)<br />
- ODU: Continue Randy advising, presentation to committee (May 24)<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: Prepare for summer student arrivals<br />
- IPAC18: Complete proceedings, light peer review, delegate survey<br />
- OPS: BTeam meetings, Hall D optics analysis<br />
- VACATION: Half-days May 22-25 (Leah hospital visit for broken hip)<br />
Next two weeks (May 28-June 8)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: Further organize ICFA beam dynamics newsletter input<br />
- ADMIN: Summer student setting in, work planning<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: CASA group meeting (Jun 6)<br />
- ODU: Continue Randy advising, dissertation draft finalization<br />
- IPAC18: Finalize proceedings, delegate survey report<br />
<br />
Alex Bogacz<br />
Previous two weeks (May 14-May 25)<br />
- IPAC18: Light peer review paper review, QA<br />
- ADMIN: Phys Rev paper review<br />
- ADMIN: Review five STFC grant proposals (for UK)<br />
Next two weeks (May 28-June 8)<br />
- ADMIN: Summer student lecture prep, lecture (June 5)<br />
- IPAC18: Light peer review paper final checks and delivery<br />
- LHEC: Work on paper on LHeC ERL scaling<br />
<br />
Rui Li<br />
Previous two weeks (May 14-May 25)<br />
- JLEIC: Impedance meeting (May 14)<br />
- JLEIC: finish IPAC paper on longitudinal coupled bunch instability<br />
- VACATION: (May 17-18, May 25 half-day)<br />
- JLEIC: Discuss HOM ion ring damping with Frank Marhauser<br />
- JLEIC: Work on pCDR writeup<br />
Next two weeks (May 28-June 8)<br />
- JLEIC: Work on pCDR writeup<br />
- JLEIC: Calculate ion coupled bunch instability growth rates with<br />
new HOM design from Marhauser<br />
- JLEIC: Work on ICFA newsletter section on beam dynamics in JLEIC rings<br />
<br />
Ed Nissen<br />
Previous two weeks (May 14-May 25)<br />
- JLEIC: Continue draft writing for pCDR<br />
- JLEIC: Continue booster nonlinear optimization work<br />
- JLEIC: Start Booster acceleration simulations<br />
Next two weeks (May 28-June 8)<br />
- ADMIN: Summer student setting in, work planning<br />
- JLEIC: Continue Booster acceleration simulations<br />
- JLEIC: Continue booster nonlinear optimization work<br />
- JLEIC: Finish draft writing for pCDR<br />
<br />
Chris Tennant<br />
Previous two weeks (May 14-May 25)<br />
- PERLE: Continued CSR analysis, initial S2E PERLE bunch tracking<br />
- JLEIC: gather information/text/figures for pCDR draft<br />
- JLEIC: Troubleshoot multiple versions of Cheng-Ying Vlasov Solver<br />
Next two weeks (May 28-June 8)<br />
- JLEIC: investigate effect of using 2x longer bunch in CCR<br />
- JLEIC: begin pushing a realistic (via Fay) bunch through ERL<br />
driver of CCR and assess performance (i.e. will it make it<br />
around the first arc, let alone make it to the CCR?)<br />
- JLEIC: further pCDR prep/writing<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
Fanglei Lin<br />
*Continued exploration of JLEIC collider rings' geometry and presented in the JLEIC R&D meeting.<br />
*Implementing vertical doglegs in the electron collider ring.<br />
*Working on the pCDR documentation.<br />
*Miscellaneous: participated HE-JLEIC discussion, attended CASA group meeting, attended the JLEIC R&D meetings, attended JLEIC detector meeting.<br />
<br><br />
Vasiliy Morozov<br />
*May 12 - May 25<br />
**JLEIC IR design: editing of Guohui's IR design paper completed, first draft of the IR section for the pCDR completed, development of the detector background section outline<br />
**JLEIC polarization: teleconference with Anatoliy's group, work on the polarization section of the pCDR, report on the effect of the potential energy increase on the ion polarization scheme<br />
**Preparing and giving talks on the JLEIC design and R&D at the JLEIC advisory committee meeting and INFN delegation meeting<br />
**Collider rings' design: implementation of the compact solenoid decoupling scheme developed by Anatoliy's group<br />
**Geometry tagging LDRD: working on getting the Sartre event generator working on JLab's farm<br />
*May 26 - June 8<br />
**Writing of pCDR sections<br />
**Collider ring design consistent with the available footprint<br />
<br><br />
Amy Sy<br />
*Working on the closeout report for skew parametric-resonance ionization cooling (Skew PIC). Summarizing the work that was done and results obtained.<br />
*Working on the JLEIC ion sources chapter for both the pre-CDR and the ICFA beam dynamics newsletter contribution.<br />
<br><br />
Guohui Wei<br />
*On Leave<br />
<br><br />
Yuhong Zhang<br />
*Explored RHIC magnets for the JLEIC ion collider ring<br />
*Organized study on high-energy JLEIC, worked on several issues (ion injector, baseline, luminosity estimate)<br />
*Worked with Fanglei on figure-8 footprint<br />
*Attended several meetings to discuss preCDR<br />
*Organized writing a contribution to ICFA Beam Dynamics newsletter<br />
*Continued to write preCDR<br />
<br><br />
<br />
----<br />
'''Computational Physics - Y. Roblin'''<br><br />
Kirsten Deitrick<br />
*Last two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-re-phasing for FEL boosters after correcting buncher setting<br />
*:-discovering the correct off-crest phase for booster cavities<br />
*:-zeroing after FEL booster<br />
*:-discontinuing work on UITF; since it's being installed in CEBAF, it can't be used in the LERF PoP<br />
**Straight Merger at CBETA:<br />
*:-beginning data analysis, getting GPT decks set up<br />
**CSR:<br />
*:-continue working on KEK CSR tech note (minimal)<br />
**eCloud:<br />
*:-pull ion beam sizes/parameters from presentations; feed into PyECLOUD<br />
*:-email CERN questions related to PyECLOUD results<br />
*:-email people (J.L. Vay, M. Furman, Amundson, Crittenden) about codes (WARP+POSINST, POSINST, different POSINST, ECLOUD)<br />
**Impedance:<br />
*:-general meeting<br />
*:-smaller meeting specific to pre-CDR documentation<br />
*:-schedule next impedance meeting (June 25th)<br />
**Meetings:<br />
*:-Impedance (general)<br />
*:-Impedance (pre-CDR)<br />
*:-CASA<br />
*:-Cooler x2 (verbal preliminary on Straight Merger at CBeta results, -)<br />
*:-CBETA weekly meeting x2<br />
*:-JLEIC x2 (verbal preliminary on Straight Merger at CBeta results, -)<br />
**Misc:<br />
*:-Open House training<br />
*:-paper maintenance (finding new, organizing all)<br />
*:-helping Sajini with automation and space charge settings for ASTRA (Magnetized GTS)<br />
*Next two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-evaluate skew quad position/strength on correcting booster asymmetries<br />
*:-start scan of charge/length/size<br />
**Straight Merger at CBETA:<br />
*:-continue data analysis<br />
*:-begin rough simulations (actual simulations, if I can get the field map from George Biallas)<br />
**CSR:<br />
*:-continue working on KEK CSR tech note (minimal)<br />
**eCloud:<br />
*:-check with Vasiliy about other beam sizes / magnet strengths (outside of arc cell)<br />
*:-run cases with variations<br />
*:-start looking at instability thresholds?<br />
**Meetings:<br />
*:-CASA<br />
*:-Cooler<br />
*:-JLEIC (maybe)<br />
<br><br />
Yves Roblin:<br />
*CEBAF:<br />
*:-chicane remodel<br />
*:-BTEAM<br />
*:-autosteer specs<br />
*:-spin calculations for fall2019, writing document for new spin tool<br />
hc: 10573.4 MeV/c<br />
hb : 10575.8 MeV/c<br />
ha: 2218.39 MeV/c<br />
*:-note on ced2elegant floor calculation<br />
*:-estimates /simulations for 2R coupling<br />
*:-optics cleanup, CED bug squishing<br />
*:-preparation for half energy (SL off ) run for Hall A experiment , ARC1/ARC2/1C/3C strings cross-calibrations<br />
*:-ELEGANT update on ops to version 34.0 (Anthony did the update, I did the checking)<br />
*JLEIC:<br />
*:-starting pulling together stuff for the pCDR beam-beam<br />
*OTHER:<br />
*:-comp. phys. journal review, Nim A review.<br />
<br><br />
Dennis Turner<br />
*CEBAF:<br />
*:-CED2ELEGANT. Fixed a bug where termination points in the Hall D proper would lead to incorrect lattices. Tracked down to a bug in the CED API.<br />
*:-CED2ELEGANT. Fixed a bug where the extraction magnets MYA's would appear in recirculating lattices. Tracked down to a bug in the ZONE definitions in the CED.<br />
*:-AutoSteer. Started working on AutoSteer from the prototypes and notes From Y. Roblin<br />
*:-CED2ELEGANT. Adding support for generating the starting floor coordinates and angles in the generated command files<br />
<br><br />
He Zhang<br />
*Fast multipole method. The paper on Traceless Cartesian Tensor FMM for Coulomb Kernel was finally accepted. Now the paper is in pressing. An online version is available here:<br />
https://www.sciencedirect.com/science/article/pii/S0021999118303280?via%3Dihub<br />
A parser was added to the kernel-independent FMM code. Now the code can read a kernel from a text file and perform the calculation without recompiling. Computation time is slightly increased but acceptable.<br />
*I started to write the paper on the kernel-independent FMM based on the Cartesian tensor and Differential Algebra. Some data was generated. However, I noticed that the efficiency is not as good as expected, although DA package has been revised for better performance. After profiling the program again, it is identified the bottle neck is the Multipole-to-Particle (M2P) operator and the Particle-to-Local (P2L) operator for ill-separated boxes. Usually the dominating operator is Multiple-to-Local (P2L). But in this case, the M2P and P2L operators includes many DA calculation for high order derivatives of the kernel function and the DA calculation is time consuming, these two operators cost much more time than the M2P operator. Possible solutions are (1) use single level FMM, which does not need M2P and P2L operators, instead of multi-level FMM; (2) use some DA approximation around the box center for the high order gradient calculation; and (3) further improve DA efficiency. To test solution (1), I revised the FMM framework so that a full tree of boxes for a given level can be generated. For a uniform distribution, a single level FMM is about 20 times faster than a multi-level FMM. This confirms that the computation bottle neck is due to the M2P and P2L operator. But the efficiency of a single-level FMM reduces very fast when the particle distribution deviates from the uniform distribution. Solution (2) will bring new errors. It will need testing to see how much the error will be increased and how much the efficiency can be improved. As to solution (3), the DA calculation efficiency can be improved by faster indexing of the DA element. But I think what we can gain is limited.<br />
*To demonstrate the kernel-independent property, we should present the calculation results for various kernels. For 2D solutions of the modified Laplace equation, the modified Stokes equation, and the modified Navier equation, one needs to calculate the first and the second kind modified Bessel functions K0 and K1. The current DA package cannot do this calculation. After some investigation, I found K0 and K1 can be calculated by the rational approximation method (Pavel Holoborodko), which is implemented in the boost library. The method should be adaptive to DA calculations.<br />
pCDR writing<br />
*A draft including the following topics has been finished: Multi-Stage Cooling Scheme, Simulation Program (JSEPC) Development, DC Cooling in the Collider, Bunched Beam Cooling in the Collider Ring. The following two sections will be added soon: DC Cooling in the Booster Ring (Needs some simulations for this topic.), Optimization of the electron cooling efficiency.<br />
*Others<br />
*:-Reviewed two papers<br />
*:-Work plan in the following two weeks<br />
*:-Continue writing and polishing the pCDR report<br />
*:-Some coding for the kernel-independent FMM<br />
*:-Dust particle transport<br />
*:-Understand the dispersive cooling theory<br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
''No report''.<br />
<br />
<br />
----<br />
'''LERF - S. Benson''' <br><br />
*May 14-25<br />
**Derived draft budget for isotope production<br />
**Went over isotope project with DOE site office staff<br />
**Summarized labor resources needed for FOA proposal<br />
**Continued cleaning up the LERF for isotope visit.<br />
**Attended teleconference with DOE for isotope project.<br />
**Hosted Cooling ring meetings on May 16 and 23rd and wrote up minutes<br />
**Established CCR circumference for Pre-CDR<br />
**Reviewed IRMMW paper, LDRD proposals and IPAC contribution<br />
*May 29-June 8<br />
**Arrange for collaboration with HZDR for Elbe II facility.<br />
**Submit budget for isotope project<br />
**Complete AWP for FOA proposal<br />
**Revise LOD to match new ASE document.<br />
**Complete question answers for LDRD proposals<br />
**Review a couple of AIP papers</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-05-25&diff=8002018-05-252018-05-30T14:53:05Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata''' <br><br />
''No report''. Acting Accelerator Department Head<br />
<br />
<br />
----<br />
'''Accelerator Physics &amp; Acting CASA Department Head - T. Satogata''' <br><br />
''No report''.<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
Fanglei Lin<br />
*Continued exploration of JLEIC collider rings' geometry and presented in the JLEIC R&D meeting.<br />
*Implementing vertical doglegs in the electron collider ring.<br />
*Working on the pCDR documentation.<br />
*Miscellaneous: participated HE-JLEIC discussion, attended CASA group meeting, attended the JLEIC R&D meetings, attended JLEIC detector meeting.<br />
<br><br />
Vasiliy Morozov<br />
*May 12 - May 25<br />
**JLEIC IR design: editing of Guohui's IR design paper completed, first draft of the IR section for the pCDR completed, development of the detector background section outline<br />
**JLEIC polarization: teleconference with Anatoliy's group, work on the polarization section of the pCDR, report on the effect of the potential energy increase on the ion polarization scheme<br />
**Preparing and giving talks on the JLEIC design and R&D at the JLEIC advisory committee meeting and INFN delegation meeting<br />
**Collider rings' design: implementation of the compact solenoid decoupling scheme developed by Anatoliy's group<br />
**Geometry tagging LDRD: working on getting the Sartre event generator working on JLab's farm<br />
*May 26 - June 8<br />
**Writing of pCDR sections<br />
**Collider ring design consistent with the available footprint<br />
<br><br />
Amy Sy<br />
*Working on the closeout report for skew parametric-resonance ionization cooling (Skew PIC). Summarizing the work that was done and results obtained.<br />
*Working on the JLEIC ion sources chapter for both the pre-CDR and the ICFA beam dynamics newsletter contribution.<br />
<br><br />
Guohui Wei<br />
*On Leave<br />
<br><br />
Yuhong Zhang<br />
*Explored RHIC magnets for the JLEIC ion collider ring<br />
*Organized study on high-energy JLEIC, worked on several issues (ion injector, baseline, luminosity estimate)<br />
*Worked with Fanglei on figure-8 footprint<br />
*Attended several meetings to discuss preCDR<br />
*Organized writing a contribution to ICFA Beam Dynamics newsletter<br />
*Continued to write preCDR<br />
<br><br />
<br />
----<br />
'''Computational Physics - Y. Roblin'''<br><br />
Kirsten Deitrick<br />
*Last two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-re-phasing for FEL boosters after correcting buncher setting<br />
*:-discovering the correct off-crest phase for booster cavities<br />
*:-zeroing after FEL booster<br />
*:-discontinuing work on UITF; since it's being installed in CEBAF, it can't be used in the LERF PoP<br />
**Straight Merger at CBETA:<br />
*:-beginning data analysis, getting GPT decks set up<br />
**CSR:<br />
*:-continue working on KEK CSR tech note (minimal)<br />
**eCloud:<br />
*:-pull ion beam sizes/parameters from presentations; feed into PyECLOUD<br />
*:-email CERN questions related to PyECLOUD results<br />
*:-email people (J.L. Vay, M. Furman, Amundson, Crittenden) about codes (WARP+POSINST, POSINST, different POSINST, ECLOUD)<br />
**Impedance:<br />
*:-general meeting<br />
*:-smaller meeting specific to pre-CDR documentation<br />
*:-schedule next impedance meeting (June 25th)<br />
**Meetings:<br />
*:-Impedance (general)<br />
*:-Impedance (pre-CDR)<br />
*:-CASA<br />
*:-Cooler x2 (verbal preliminary on Straight Merger at CBeta results, -)<br />
*:-CBETA weekly meeting x2<br />
*:-JLEIC x2 (verbal preliminary on Straight Merger at CBeta results, -)<br />
**Misc:<br />
*:-Open House training<br />
*:-paper maintenance (finding new, organizing all)<br />
*:-helping Sajini with automation and space charge settings for ASTRA (Magnetized GTS)<br />
*Next two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-evaluate skew quad position/strength on correcting booster asymmetries<br />
*:-start scan of charge/length/size<br />
**Straight Merger at CBETA:<br />
*:-continue data analysis<br />
*:-begin rough simulations (actual simulations, if I can get the field map from George Biallas)<br />
**CSR:<br />
*:-continue working on KEK CSR tech note (minimal)<br />
**eCloud:<br />
*:-check with Vasiliy about other beam sizes / magnet strengths (outside of arc cell)<br />
*:-run cases with variations<br />
*:-start looking at instability thresholds?<br />
**Meetings:<br />
*:-CASA<br />
*:-Cooler<br />
*:-JLEIC (maybe)<br />
<br><br />
Yves Roblin:<br />
*CEBAF:<br />
*:-chicane remodel<br />
*:-BTEAM<br />
*:-autosteer specs<br />
*:-spin calculations for fall2019, writing document for new spin tool<br />
hc: 10573.4 MeV/c<br />
hb : 10575.8 MeV/c<br />
ha: 2218.39 MeV/c<br />
*:-note on ced2elegant floor calculation<br />
*:-estimates /simulations for 2R coupling<br />
*:-optics cleanup, CED bug squishing<br />
*:-preparation for half energy (SL off ) run for Hall A experiment , ARC1/ARC2/1C/3C strings cross-calibrations<br />
*:-ELEGANT update on ops to version 34.0 (Anthony did the update, I did the checking)<br />
*JLEIC:<br />
*:-starting pulling together stuff for the pCDR beam-beam<br />
*OTHER:<br />
*:-comp. phys. journal review, Nim A review.<br />
<br><br />
Dennis Turner<br />
*CEBAF:<br />
*:-CED2ELEGANT. Fixed a bug where termination points in the Hall D proper would lead to incorrect lattices. Tracked down to a bug in the CED API.<br />
*:-CED2ELEGANT. Fixed a bug where the extraction magnets MYA's would appear in recirculating lattices. Tracked down to a bug in the ZONE definitions in the CED.<br />
*:-AutoSteer. Started working on AutoSteer from the prototypes and notes From Y. Roblin<br />
*:-CED2ELEGANT. Adding support for generating the starting floor coordinates and angles in the generated command files<br />
<br><br />
He Zhang<br />
*Fast multipole method. The paper on Traceless Cartesian Tensor FMM for Coulomb Kernel was finally accepted. Now the paper is in pressing. An online version is available here:<br />
https://www.sciencedirect.com/science/article/pii/S0021999118303280?via%3Dihub<br />
A parser was added to the kernel-independent FMM code. Now the code can read a kernel from a text file and perform the calculation without recompiling. Computation time is slightly increased but acceptable.<br />
*I started to write the paper on the kernel-independent FMM based on the Cartesian tensor and Differential Algebra. Some data was generated. However, I noticed that the efficiency is not as good as expected, although DA package has been revised for better performance. After profiling the program again, it is identified the bottle neck is the Multipole-to-Particle (M2P) operator and the Particle-to-Local (P2L) operator for ill-separated boxes. Usually the dominating operator is Multiple-to-Local (P2L). But in this case, the M2P and P2L operators includes many DA calculation for high order derivatives of the kernel function and the DA calculation is time consuming, these two operators cost much more time than the M2P operator. Possible solutions are (1) use single level FMM, which does not need M2P and P2L operators, instead of multi-level FMM; (2) use some DA approximation around the box center for the high order gradient calculation; and (3) further improve DA efficiency. To test solution (1), I revised the FMM framework so that a full tree of boxes for a given level can be generated. For a uniform distribution, a single level FMM is about 20 times faster than a multi-level FMM. This confirms that the computation bottle neck is due to the M2P and P2L operator. But the efficiency of a single-level FMM reduces very fast when the particle distribution deviates from the uniform distribution. Solution (2) will bring new errors. It will need testing to see how much the error will be increased and how much the efficiency can be improved. As to solution (3), the DA calculation efficiency can be improved by faster indexing of the DA element. But I think what we can gain is limited.<br />
*To demonstrate the kernel-independent property, we should present the calculation results for various kernels. For 2D solutions of the modified Laplace equation, the modified Stokes equation, and the modified Navier equation, one needs to calculate the first and the second kind modified Bessel functions K0 and K1. The current DA package cannot do this calculation. After some investigation, I found K0 and K1 can be calculated by the rational approximation method (Pavel Holoborodko), which is implemented in the boost library. The method should be adaptive to DA calculations.<br />
pCDR writing<br />
*A draft including the following topics has been finished: Multi-Stage Cooling Scheme, Simulation Program (JSEPC) Development, DC Cooling in the Collider, Bunched Beam Cooling in the Collider Ring. The following two sections will be added soon: DC Cooling in the Booster Ring (Needs some simulations for this topic.), Optimization of the electron cooling efficiency.<br />
*Others<br />
*:-Reviewed two papers<br />
*:-Work plan in the following two weeks<br />
*:-Continue writing and polishing the pCDR report<br />
*:-Some coding for the kernel-independent FMM<br />
*:-Dust particle transport<br />
*:-Understand the dispersive cooling theory<br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
''No report''.<br />
<br />
<br />
----<br />
'''LERF - S. Benson''' <br><br />
*May 14-25<br />
**Derived draft budget for isotope production<br />
**Went over isotope project with DOE site office staff<br />
**Summarized labor resources needed for FOA proposal<br />
**Continued cleaning up the LERF for isotope visit.<br />
**Attended teleconference with DOE for isotope project.<br />
**Hosted Cooling ring meetings on May 16 and 23rd and wrote up minutes<br />
**Established CCR circumference for Pre-CDR<br />
**Reviewed IRMMW paper, LDRD proposals and IPAC contribution<br />
*May 29-June 8<br />
**Arrange for collaboration with HZDR for Elbe II facility.<br />
**Submit budget for isotope project<br />
**Complete AWP for FOA proposal<br />
**Revise LOD to match new ASE document.<br />
**Complete question answers for LDRD proposals<br />
**Review a couple of AIP papers</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-05-25&diff=7992018-05-252018-05-30T13:53:13Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata''' <br><br />
''No report''. Acting Accelerator Department Head<br />
<br />
<br />
----<br />
'''Accelerator Physics &amp; Acting CASA Department Head - T. Satogata''' <br><br />
''No report''.<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
Fanglei Lin<br />
*Continued exploration of JLEIC collider rings' geometry and presented in the JLEIC R&D meeting.<br />
*Implementing vertical doglegs in the electron collider ring.<br />
*Working on the pCDR documentation.<br />
*Miscellaneous: participated HE-JLEIC discussion, attended CASA group meeting, attended the JLEIC R&D meetings, attended JLEIC detector meeting.<br />
<br><br />
Vasiliy Morozov<br />
*May 12 - May 25<br />
**JLEIC IR design: editing of Guohui's IR design paper completed, first draft of the IR section for the pCDR completed, development of the detector background section outline<br />
**JLEIC polarization: teleconference with Anatoliy's group, work on the polarization section of the pCDR, report on the effect of the potential energy increase on the ion polarization scheme<br />
**Preparing and giving talks on the JLEIC design and R&D at the JLEIC advisory committee meeting and INFN delegation meeting<br />
**Collider rings' design: implementation of the compact solenoid decoupling scheme developed by Anatoliy's group<br />
**Geometry tagging LDRD: working on getting the Sartre event generator working on JLab's farm<br />
*May 26 - June 8<br />
**Writing of pCDR sections<br />
**Collider ring design consistent with the available footprint<br />
<br><br />
Amy Sy<br />
*Working on the closeout report for skew parametric-resonance ionization cooling (Skew PIC). Summarizing the work that was done and results obtained.<br />
*Working on the JLEIC ion sources chapter for both the pre-CDR and the ICFA beam dynamics newsletter contribution.<br />
<br><br />
Guohui Wei<br />
*On Leave<br />
<br><br />
Yuhong Zhang<br />
*Explored RHIC magnets for the JLEIC ion collider ring<br />
*Organized study on high-energy JLEIC, worked on several issues (ion injector, baseline, luminosity estimate)<br />
*Worked with Fanglei on figure-8 footprint<br />
*Attended several meetings to discuss preCDR<br />
*Organized writing a contribution to ICFA Beam Dynamics newsletter<br />
*Continued to write preCDR<br />
<br><br />
<br />
----<br />
'''Computational Physics - Y. Roblin'''<br><br />
Kirsten Deitrick<br />
*Last two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-re-phasing for FEL boosters after correcting buncher setting<br />
*:-discovering the correct off-crest phase for booster cavities<br />
*:-zeroing after FEL booster<br />
*:-discontinuing work on UITF; since it's being installed in CEBAF, it can't be used in the LERF PoP<br />
**Straight Merger at CBETA:<br />
*:-beginning data analysis, getting GPT decks set up<br />
**CSR:<br />
*:-continue working on KEK CSR tech note (minimal)<br />
**eCloud:<br />
*:-pull ion beam sizes/parameters from presentations; feed into PyECLOUD<br />
*:-email CERN questions related to PyECLOUD results<br />
*:-email people (J.L. Vay, M. Furman, Amundson, Crittenden) about codes (WARP+POSINST, POSINST, different POSINST, ECLOUD)<br />
**Impedance:<br />
*:-general meeting<br />
*:-smaller meeting specific to pre-CDR documentation<br />
*:-schedule next impedance meeting (June 25th)<br />
**Meetings:<br />
*:-Impedance (general)<br />
*:-Impedance (pre-CDR)<br />
*:-CASA<br />
*:-Cooler x2 (verbal preliminary on Straight Merger at CBeta results, -)<br />
*:-CBETA weekly meeting x2<br />
*:-JLEIC x2 (verbal preliminary on Straight Merger at CBeta results, -)<br />
**Misc:<br />
*:-Open House training<br />
*:-paper maintenance (finding new, organizing all)<br />
*:-helping Sajini with automation and space charge settings for ASTRA (Magnetized GTS)<br />
*Next two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-evaluate skew quad position/strength on correcting booster asymmetries<br />
*:-start scan of charge/length/size<br />
**Straight Merger at CBETA:<br />
*:-continue data analysis<br />
*:-begin rough simulations (actual simulations, if I can get the field map from George Biallas)<br />
**CSR:<br />
*:-continue working on KEK CSR tech note (minimal)<br />
**eCloud:<br />
*:-check with Vasiliy about other beam sizes / magnet strengths (outside of arc cell)<br />
*:-run cases with variations<br />
*:-start looking at instability thresholds?<br />
**Meetings:<br />
*:-CASA<br />
*:-Cooler<br />
*:-JLEIC (maybe)<br />
<br><br />
Yves Roblin:<br />
*CEBAF:<br />
*:-chicane remodel<br />
*:-BTEAM<br />
*:-autosteer specs<br />
*:-spin calculations for fall2019, writing document for new spin tool<br />
hc: 10573.4 MeV/c<br />
hb : 10575.8 MeV/c<br />
ha: 2218.39 MeV/c<br />
*:-note on ced2elegant floor calculation<br />
*:-estimates /simulations for 2R coupling<br />
*:-optics cleanup, CED bug squishing<br />
*:-preparation for half energy (SL off ) run for Hall A experiment , ARC1/ARC2/1C/3C strings cross-calibrations<br />
*:-ELEGANT update on ops to version 34.0 (Anthony did the update, I did the checking)<br />
*JLEIC:<br />
*:-starting pulling together stuff for the pCDR beam-beam<br />
*OTHER:<br />
*:-comp. phys. journal review, Nim A review.<br />
<br><br />
Dennis Turner<br />
*CEBAF:<br />
*:-CED2ELEGANT. Fixed a bug where termination points in the Hall D proper would lead to incorrect lattices. Tracked down to a bug in the CED API.<br />
*:-CED2ELEGANT. Fixed a bug where the extraction magnets MYA's would appear in recirculating lattices. Tracked down to a bug in the ZONE definitions in the CED.<br />
*:-AutoSteer. Started working on AutoSteer from the prototypes and notes From Y. Roblin<br />
*:-CED2ELEGANT. Adding support for generating the starting floor coordinates and angles in the generated command files<br />
<br><br />
He Zhang<br />
*Fast multipole method. The paper on Traceless Cartesian Tensor FMM for Coulomb Kernel was finally accepted. Now the paper is in pressing. An online version is available here:<br />
https://www.sciencedirect.com/science/article/pii/S0021999118303280?via%3Dihub<br />
A parser was added to the kernel-independent FMM code. Now the code can read a kernel from a text file and perform the calculation without recompiling. Computation time is slightly increased but acceptable.<br />
*I started to write the paper on the kernel-independent FMM based on the Cartesian tensor and Differential Algebra. Some data was generated. However, I noticed that the efficiency is not as good as expected, although DA package has been revised for better performance. After profiling the program again, it is identified the bottle neck is the Multipole-to-Particle (M2P) operator and the Particle-to-Local (P2L) operator for ill-separated boxes. Usually the dominating operator is Multiple-to-Local (P2L). But in this case, the M2P and P2L operators includes many DA calculation for high order derivatives of the kernel function and the DA calculation is time consuming, these two operators cost much more time than the M2P operator. Possible solutions are (1) use single level FMM, which does not need M2P and P2L operators, instead of multi-level FMM; (2) use some DA approximation around the box center for the high order gradient calculation; and (3) further improve DA efficiency. To test solution (1), I revised the FMM framework so that a full tree of boxes for a given level can be generated. For a uniform distribution, a single level FMM is about 20 times faster than a multi-level FMM. This confirms that the computation bottle neck is due to the M2P and P2L operator. But the efficiency of a single-level FMM reduces very fast when the particle distribution deviates from the uniform distribution. Solution (2) will bring new errors. It will need testing to see how much the error will be increased and how much the efficiency can be improved. As to solution (3), the DA calculation efficiency can be improved by faster indexing of the DA element. But I think what we can gain is limited.<br />
*To demonstrate the kernel-independent property, we should present the calculation results for various kernels. For 2D solutions of the modified Laplace equation, the modified Stokes equation, and the modified Navier equation, one needs to calculate the first and the second kind modified Bessel functions K0 and K1. The current DA package cannot do this calculation. After some investigation, I found K0 and K1 can be calculated by the rational approximation method (Pavel Holoborodko), which is implemented in the boost library. The method should be adaptive to DA calculations.<br />
pCDR writing<br />
*A draft including the following topics has been finished: Multi-Stage Cooling Scheme, Simulation Program (JSEPC) Development, DC Cooling in the Collider, Bunched Beam Cooling in the Collider Ring. The following two sections will be added soon: DC Cooling in the Booster Ring (Needs some simulations for this topic.), Optimization of the electron cooling efficiency.<br />
*Others<br />
*:-Reviewed two papers<br />
*:-Work plan in the following two weeks<br />
*:-Continue writing and polishing the pCDR report<br />
*:-Some coding for the kernel-independent FMM<br />
*:-Dust particle transport<br />
*:-Understand the dispersive cooling theory<br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
''No report''.<br />
<br />
<br />
----<br />
'''LERF - S. Benson''' <br><br />
''No report''.</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-05-25&diff=7982018-05-252018-05-30T13:52:04Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata''' <br><br />
''No report''. Acting Accelerator Department Head<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata''' <br><br />
''No report''.<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
Fanglei Lin<br />
*Continued exploration of JLEIC collider rings' geometry and presented in the JLEIC R&D meeting.<br />
*Implementing vertical doglegs in the electron collider ring.<br />
*Working on the pCDR documentation.<br />
*Miscellaneous: participated HE-JLEIC discussion, attended CASA group meeting, attended the JLEIC R&D meetings, attended JLEIC detector meeting.<br />
<br><br />
Vasiliy Morozov<br />
*May 12 - May 25<br />
**JLEIC IR design: editing of Guohui's IR design paper completed, first draft of the IR section for the pCDR completed, development of the detector background section outline<br />
**JLEIC polarization: teleconference with Anatoliy's group, work on the polarization section of the pCDR, report on the effect of the potential energy increase on the ion polarization scheme<br />
**Preparing and giving talks on the JLEIC design and R&D at the JLEIC advisory committee meeting and INFN delegation meeting<br />
**Collider rings' design: implementation of the compact solenoid decoupling scheme developed by Anatoliy's group<br />
**Geometry tagging LDRD: working on getting the Sartre event generator working on JLab's farm<br />
*May 26 - June 8<br />
**Writing of pCDR sections<br />
**Collider ring design consistent with the available footprint<br />
<br><br />
Amy Sy<br />
*Working on the closeout report for skew parametric-resonance ionization cooling (Skew PIC). Summarizing the work that was done and results obtained.<br />
*Working on the JLEIC ion sources chapter for both the pre-CDR and the ICFA beam dynamics newsletter contribution.<br />
<br><br />
Guohui Wei<br />
*On Leave<br />
<br><br />
Yuhong Zhang<br />
*Explored RHIC magnets for the JLEIC ion collider ring<br />
*Organized study on high-energy JLEIC, worked on several issues (ion injector, baseline, luminosity estimate)<br />
*Worked with Fanglei on figure-8 footprint<br />
*Attended several meetings to discuss preCDR<br />
*Organized writing a contribution to ICFA Beam Dynamics newsletter<br />
*Continued to write preCDR<br />
<br><br />
<br />
----<br />
'''Computational Physics - Y. Roblin'''<br><br />
Kirsten Deitrick<br />
*Last two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-re-phasing for FEL boosters after correcting buncher setting<br />
*:-discovering the correct off-crest phase for booster cavities<br />
*:-zeroing after FEL booster<br />
*:-discontinuing work on UITF; since it's being installed in CEBAF, it can't be used in the LERF PoP<br />
**Straight Merger at CBETA:<br />
*:-beginning data analysis, getting GPT decks set up<br />
**CSR:<br />
*:-continue working on KEK CSR tech note (minimal)<br />
**eCloud:<br />
*:-pull ion beam sizes/parameters from presentations; feed into PyECLOUD<br />
*:-email CERN questions related to PyECLOUD results<br />
*:-email people (J.L. Vay, M. Furman, Amundson, Crittenden) about codes (WARP+POSINST, POSINST, different POSINST, ECLOUD)<br />
**Impedance:<br />
*:-general meeting<br />
*:-smaller meeting specific to pre-CDR documentation<br />
*:-schedule next impedance meeting (June 25th)<br />
**Meetings:<br />
*:-Impedance (general)<br />
*:-Impedance (pre-CDR)<br />
*:-CASA<br />
*:-Cooler x2 (verbal preliminary on Straight Merger at CBeta results, -)<br />
*:-CBETA weekly meeting x2<br />
*:-JLEIC x2 (verbal preliminary on Straight Merger at CBeta results, -)<br />
**Misc:<br />
*:-Open House training<br />
*:-paper maintenance (finding new, organizing all)<br />
*:-helping Sajini with automation and space charge settings for ASTRA (Magnetized GTS)<br />
*Next two weeks:<br />
**Magnetized beam (LERF PoP):<br />
*:-evaluate skew quad position/strength on correcting booster asymmetries<br />
*:-start scan of charge/length/size<br />
**Straight Merger at CBETA:<br />
*:-continue data analysis<br />
*:-begin rough simulations (actual simulations, if I can get the field map from George Biallas)<br />
**CSR:<br />
*:-continue working on KEK CSR tech note (minimal)<br />
**eCloud:<br />
*:-check with Vasiliy about other beam sizes / magnet strengths (outside of arc cell)<br />
*:-run cases with variations<br />
*:-start looking at instability thresholds?<br />
**Meetings:<br />
*:-CASA<br />
*:-Cooler<br />
*:-JLEIC (maybe)<br />
<br><br />
Yves Roblin:<br />
*CEBAF:<br />
*:-chicane remodel<br />
*:-BTEAM<br />
*:-autosteer specs<br />
*:-spin calculations for fall2019, writing document for new spin tool<br />
hc: 10573.4 MeV/c<br />
hb : 10575.8 MeV/c<br />
ha: 2218.39 MeV/c<br />
*:-note on ced2elegant floor calculation<br />
*:-estimates /simulations for 2R coupling<br />
*:-optics cleanup, CED bug squishing<br />
*:-preparation for half energy (SL off ) run for Hall A experiment , ARC1/ARC2/1C/3C strings cross-calibrations<br />
*:-ELEGANT update on ops to version 34.0 (Anthony did the update, I did the checking)<br />
*JLEIC:<br />
*:-starting pulling together stuff for the pCDR beam-beam<br />
*OTHER:<br />
*:-comp. phys. journal review, Nim A review.<br />
<br><br />
Dennis Turner<br />
*CEBAF:<br />
*:-CED2ELEGANT. Fixed a bug where termination points in the Hall D proper would lead to incorrect lattices. Tracked down to a bug in the CED API.<br />
*:-CED2ELEGANT. Fixed a bug where the extraction magnets MYA's would appear in recirculating lattices. Tracked down to a bug in the ZONE definitions in the CED.<br />
*:-AutoSteer. Started working on AutoSteer from the prototypes and notes From Y. Roblin<br />
*:-CED2ELEGANT. Adding support for generating the starting floor coordinates and angles in the generated command files<br />
<br><br />
He Zhang<br />
*Fast multipole method. The paper on Traceless Cartesian Tensor FMM for Coulomb Kernel was finally accepted. Now the paper is in pressing. An online version is available here:<br />
https://www.sciencedirect.com/science/article/pii/S0021999118303280?via%3Dihub<br />
A parser was added to the kernel-independent FMM code. Now the code can read a kernel from a text file and perform the calculation without recompiling. Computation time is slightly increased but acceptable.<br />
*I started to write the paper on the kernel-independent FMM based on the Cartesian tensor and Differential Algebra. Some data was generated. However, I noticed that the efficiency is not as good as expected, although DA package has been revised for better performance. After profiling the program again, it is identified the bottle neck is the Multipole-to-Particle (M2P) operator and the Particle-to-Local (P2L) operator for ill-separated boxes. Usually the dominating operator is Multiple-to-Local (P2L). But in this case, the M2P and P2L operators includes many DA calculation for high order derivatives of the kernel function and the DA calculation is time consuming, these two operators cost much more time than the M2P operator. Possible solutions are (1) use single level FMM, which does not need M2P and P2L operators, instead of multi-level FMM; (2) use some DA approximation around the box center for the high order gradient calculation; and (3) further improve DA efficiency. To test solution (1), I revised the FMM framework so that a full tree of boxes for a given level can be generated. For a uniform distribution, a single level FMM is about 20 times faster than a multi-level FMM. This confirms that the computation bottle neck is due to the M2P and P2L operator. But the efficiency of a single-level FMM reduces very fast when the particle distribution deviates from the uniform distribution. Solution (2) will bring new errors. It will need testing to see how much the error will be increased and how much the efficiency can be improved. As to solution (3), the DA calculation efficiency can be improved by faster indexing of the DA element. But I think what we can gain is limited.<br />
*To demonstrate the kernel-independent property, we should present the calculation results for various kernels. For 2D solutions of the modified Laplace equation, the modified Stokes equation, and the modified Navier equation, one needs to calculate the first and the second kind modified Bessel functions K0 and K1. The current DA package cannot do this calculation. After some investigation, I found K0 and K1 can be calculated by the rational approximation method (Pavel Holoborodko), which is implemented in the boost library. The method should be adaptive to DA calculations.<br />
pCDR writing<br />
*A draft including the following topics has been finished: Multi-Stage Cooling Scheme, Simulation Program (JSEPC) Development, DC Cooling in the Collider, Bunched Beam Cooling in the Collider Ring. The following two sections will be added soon: DC Cooling in the Booster Ring (Needs some simulations for this topic.), Optimization of the electron cooling efficiency.<br />
*Others<br />
*:-Reviewed two papers<br />
*:-Work plan in the following two weeks<br />
*:-Continue writing and polishing the pCDR report<br />
*:-Some coding for the kernel-independent FMM<br />
*:-Dust particle transport<br />
*:-Understand the dispersive cooling theory<br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
''No report''.<br />
<br />
<br />
----<br />
'''LERF - S. Benson''' <br><br />
''No report''.</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-05-25&diff=7972018-05-252018-05-30T13:37:07Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata''' <br><br />
''No report''. Acting Accelerator Department Head<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata''' <br><br />
''No report''.<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
Fanglei Lin<br />
*Continued exploration of JLEIC collider rings' geometry and presented in the JLEIC R&D meeting.<br />
*Implementing vertical doglegs in the electron collider ring.<br />
*Working on the pCDR documentation.<br />
*Miscellaneous: participated HE-JLEIC discussion, attended CASA group meeting, attended the JLEIC R&D meetings, attended JLEIC detector meeting.<br />
<br><br />
Vasiliy Morozov<br />
*May 12 - May 25<br />
**JLEIC IR design: editing of Guohui's IR design paper completed, first draft of the IR section for the pCDR completed, development of the detector background section outline<br />
**JLEIC polarization: teleconference with Anatoliy's group, work on the polarization section of the pCDR, report on the effect of the potential energy increase on the ion polarization scheme<br />
**Preparing and giving talks on the JLEIC design and R&D at the JLEIC advisory committee meeting and INFN delegation meeting<br />
**Collider rings' design: implementation of the compact solenoid decoupling scheme developed by Anatoliy's group<br />
**Geometry tagging LDRD: working on getting the Sartre event generator working on JLab's farm<br />
*May 26 - June 8<br />
**Writing of pCDR sections<br />
**Collider ring design consistent with the available footprint<br />
<br><br />
Amy Sy<br />
*Working on the closeout report for skew parametric-resonance ionization cooling (Skew PIC). Summarizing the work that was done and results obtained.<br />
*Working on the JLEIC ion sources chapter for both the pre-CDR and the ICFA beam dynamics newsletter contribution.<br />
<br><br />
Guohui Wei<br />
*On Leave<br />
<br><br />
Yuhong Zhang<br />
*Explored RHIC magnets for the JLEIC ion collider ring<br />
*Organized study on high-energy JLEIC, worked on several issues (ion injector, baseline, luminosity estimate)<br />
*Worked with Fanglei on figure-8 footprint<br />
*Attended several meetings to discuss preCDR<br />
*Organized writing a contribution to ICFA Beam Dynamics newsletter<br />
*Continued to write preCDR<br />
<br><br />
<br />
----<br />
'''Computational Physics - Y. Roblin'''<br><br />
''No report''.<br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
''No report''.<br />
<br />
<br />
----<br />
'''LERF - S. Benson''' <br><br />
''No report''.</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-05-25&diff=7962018-05-252018-05-30T13:19:11Z<p>Anichols: Created page with "'''Director - M. Spata''' <br> ''No report''. Acting Accelerator Department Head ---- '''Accelerator Physics - T. Satogata''' <br> ''No report''. ---- '''Accelerator R &a..."</p>
<hr />
<div>'''Director - M. Spata''' <br><br />
''No report''. Acting Accelerator Department Head<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata''' <br><br />
''No report''.<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
''No report''.<br />
<br />
<br />
----<br />
'''Computational Physics - Y. Roblin'''<br><br />
''No report''.<br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
''No report''.<br />
<br />
<br />
----<br />
'''LERF - S. Benson''' <br><br />
''No report''.</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018&diff=79520182018-05-30T13:12:35Z<p>Anichols: </p>
<hr />
<div><br />
[[2018-05-25]]<br><br />
[[2018-05-11]]<br><br />
[[2018-04-27]]<br><br />
[[2018-04-13]]<br><br />
[[2018-03-30]]<br><br />
[[2018-03-16]]<br><br />
[[2018-03-02]]<br><br />
[[2018-02-16]]<br><br />
[[2018-02-02]]<br><br />
[[2018-01-22]]<br></div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-05-11&diff=7942018-05-112018-05-14T14:00:01Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata'''<br><br />
''No report.'' Acting Accelerator Division Head.<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata'''<br><br />
Todd Satogata<br />
Previous two weeks (Apr 31-May 11)<br />
- IPAC18: Scientific secretariat work (student program, light peer review)<br />
- JLEIC: pCDR writing, template, EIC lunch, visitors (Peggs,<br />
Next two weeks (May 14-May 25)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: P&C Meeting (May 21)<br />
- ODU: Continue Randy advising, presentation to committee (May 24)<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: Prepare for summer student arrivals<br />
- IPAC18: Complete proceedings, light peer review, delegate survey<br />
- OPS: BTeam meetings, Hall D optics analysis<br />
<br />
Alex Bogacz<br />
Previous two weeks (Apr 31-May 11)<br />
- IPAC18: Apr 31-May 4 (light peer review)<br />
- VACATION: May 7-11<br />
Next two weeks (May 14-May 25)<br />
- IPAC18: Light peer review development<br />
- PERLE process followup<br />
<br />
Rui Li<br />
Previous two weeks (Apr 31-May 11)<br />
- IPAC18: Apr 31-May 4 (delegate)<br />
- IPAC18: CSR meeting with experts in field, path forward in field<br />
for theory, simulation, and experiment<br />
- JLEIC: Clean up IPAC papers, start pCDR documentation<br />
- JLEIC: Prepare for impedance meeting<br />
Next two weeks (May 14-May 25)<br />
- JLEIC: Impedance meeting (May 14)<br />
- JLEIC: Work on pCDR writeup<br />
- VACATION: (May 17-18)<br />
<br />
Ed Nissen<br />
Previous two weeks (Apr 31-May 11)<br />
- JLEIC: Finalize IPAC paper<br />
- JLEIC: Reading up on octupole detuning, set up madx optimization<br />
- JLEIC: initial draft writing for pCDR<br />
Next two weeks (May 14-May 25)<br />
- JLEIC: Finish draft writing for pCDR<br />
- JLEIC: Continue booster nonlinear optimization work<br />
<br />
Chris Tennant<br />
Previous two weeks (Apr 31-May 11)<br />
- IPAC18: Apr 31-May 4 (delegate)<br />
- IPAC18: Finish IPAC papers and documentw rok<br />
Next two weeks (May 14-May 25)<br />
- ADMIN: Migrate laptops (to Dave's old one)<br />
- JLEIC: translate DIMAD ERL-to-CCR transport to elegant<br />
to build up full S2E of cooler<br />
- PERLE: Continued CSR analysis<br />
<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
Fanglei Lin<br />
*Continued exploration of JLEIC collider rings' geometry.<br />
*Converted the polarized positron source proposal to an arXiv paper.<br />
*Attended beam study of CEBAF pulsed mode operation for the JLEIC injection.<br />
*Reviewed two IPAC18 papers, participated IP magnet discussion, participated HE-JLEIC discussion.<br />
<br><br />
Vasily Morozov<br />
*Preparation and submission of IPAC papers: spin and crab crossing<br />
*Consideration of a high-energy IR scenario<br />
*Iterating on the design of the closed orbit correction in the IR region<br />
*Writing of the pCDR section on IR design<br />
*Spin dynamics: design of the electron spin rotator<br />
*Geometry tagging LDRD: simulations and installation of an event generator<br />
<Br><br />
Amy Sy<br />
*IPAC18 preparation and attendance: presented papers/posters at IPAC18 on toroidal merger simulations and calculations of beam-beam effect and luminosity for crab dynamics simulations.<br />
*Prepared and submitted LDRD proposal on a laser-driven polarized deuterium source for JLEIC. The proposed project involves producing polarized deuterium atoms with infrared laser pulses that excite a vibrational state in a deuterium halide molecule; the rovibrational state couples to the nuclear spin through the hyperfine interaction, and dissociating the deuterium halide molecule at a time of maximum polarization then produces a polarized deuterium atom.<br />
<br><br />
Guohui Wei<br />
*Prepared report and poster of "Update of the JLEIC ion collider ring" for the IPAC'18<br />
*LDRD study of the geometry tagging after the collision. One important purpose of the LDRD is to certificate the fraction of coherent J/PSI and PHI decay for physics model. And the detected J/PSI decay includes both incoherent diffraction and coherent diffraction. Now I study to identify and vote the incoherent J/PSI events with 0 evaporation neutron.<br />
*I continue to study the closed orbit correction in IR of ion collider ring . Here we think of a first dipole with 1 meter length and two correction layer, which follows by a 0.5 meter corrector.<br />
<br><br />
Yuhong Zhang<br />
*Prepared 3 posters for IPAC18<br />
*Prepared and submitted a LDRD<br />
*Attended IPAC18<br />
<br />
<br />
----<br />
'''Computational Physicss - Y. Roblin'''<br><br />
Kirsten Deitrick<br />
*Last two weeks:<br />
**Straight Merger at CBeta:<br />
*:-finish figures<br />
*:-make presentation for CBeta<br />
*:-data taking during experiment at CBeta<br />
**CSR:<br />
*:-continue working on KEK CSR tech note<br />
**eCloud:<br />
*:-tracking ion beam parameters around ring<br />
*:-have received NERSC allocation/account - working on getting script from Jean-Luc Vay for WARP+POSINST<br />
*:-got in contact Jim Crittenden at Cornell<br />
*:-contact M. Furman about POSINST<br />
**Impedance:<br />
*:-send out request for meeting items<br />
**Meetings:<br />
*:-CBETA weekly meeting<br />
**Misc:<br />
*:-LINAC18 travel authorization<br />
*Next two weeks:<br />
**Magnetized beam:<br />
*:-zeroing after FEL booster<br />
*:-start evaluating merger options?<br />
**Straight Merger at CBeta:<br />
*:-redo simulations using machine settings (with/without slits)<br />
*:-analyze measurement data<br />
*:-work on write-up<br />
**CSR:<br />
*:-continue working on tech note for KEK CSR<br />
**eCloud:<br />
*:-continue following up with Furman, J.L. Vay, Crittenden<br />
*:-ion ring tracking for input into PyECLOUD<br />
**Impedance:<br />
*:-meeting<br />
**Meetings:<br />
*:-impedance<br />
*:-CASA<br />
*:-JLEIC R&D (x2)<br />
*:-Cooler (x2)<br />
<br><br />
<br />
Yves Roblin<br />
*CEBAF:<br />
*:-model audit.<br />
*:-audit of the 5 pass extraction setup., make a model for predicting the setup from correctors settings in the machine<br />
*:-re-setup of the extraction at 5 pass<br />
*:-beam studies<br />
*:-BTEAM meetings<br />
*:-raytrace/autosteer development.<br />
*:-preparing plan for summer shutdown (model development, etc..)<br />
*OTHER:<br />
*:-NSF proposal review due may 18<br />
*:-IPAC paper review<br />
*:-Nim Journal Review .<br />
*:-Computer Physics Communications journal Review due may 22<br />
<br><br />
<br />
He Zhang<br />
*JLEIC Cooling Simulation<br />
*:-Continue cooling simulations for JLEIC following Steve’s suggestion. First, compare the cooling with (a) round beam, (b) flat beam with reduce drift emittance, and (c) flat beam with unchanged drift emittance. Simulation suggests (b) provides the best cooling. (c) is slightly worse than (b), but obviously better than (a). (b) also avoids the difficulty to further reduce the drift emittance of the electron beam, so it may be preferred for JLEIC cooling. Second, simulate the cooling for high density proton beam for 64 GeV CM energy with 6.4 nC/bunch electron beam. Unfortunately, even with 6.4 nC/bunch electron beam, we still do not have enough cooling for the high density proton beam. We will need to reduce the proton beam current for an equilibrium between the IBS and cooling. Third, Simulate the cooling for 200 GeV proton beam with 3.2 nC/bunch electron beam. As expected, cooling is not strong enough. We will need to either reduce the proton current or increase the electron beam current. Some of the above results were presented in the cooling ring design meeting. I mentioned to Steve there are two things we should do to optimize the cooling. One is to use an optimizer, e.g. NSGA, to explore the proton beam parameter domain with a fixed electron beam. The other is to figure out which part of the ion ring contributes the most to the horizontal IBS and investigate whether we can optimize the optics to reduce the horizontal IBS. Probably we can start this after we finish the pCDR draft.<br />
*Fast Multipole Method<br />
*:-Generate new data to compare our traceless FMM code for Coulomb kernel with the pyfmmlib. Pyfmmlib is a Python wrapper for a well optimized Fortran FMM lib for Coulomb kernel and Helmholtz kernel. Our code is developed for illustration of the idea. We have been careful to avoid redundant calculations, but the code has not been fully optimized. The numerical results show that with a lower tensor rank for relative error about 1e-4 or larger, our code is faster. But as the tensor rank goes up, the pyfmmlib outperformed our code. This is as expected since the Cartesian tensor FMM has a higher order dependence on the rank than the solid harmonic FMM. Although our work reduce the order dependence from O(n6) to O(n5), it does not change the conclusion in general. But The Cartesian tensor FMM can be used for simulations with moderate accuracy requirement. The Cartesian tensor FMM also has higher flop rate than other FMMs. As the bandwidth becomes more expansive. The Cartesian tensor FMM may be preferred in future. I add the new data and some discussion of the Cartesian tensor FMM to the FMM manuscript and submitted the revised one to JCOMP.<br />
*:-Investigate a few math parsers and found one called metl, which allows to parse the expression into a function with user defined variables. I have tested this parser with my tpsa and da code. It supports the DAVector data type without problem. This means our kernel-independent FMM code will be able to treat different kernels without recompiling. I started to write a paper on the kernel-independent FMM. Now I am writing on the analytical part. Will need more numerical result to complete the paper. <br />
*Work plan in the following two weeks<br />
*:-Write for pCDR.<br />
*:-Write some code (probably in Python) to solve the dynamic equations for dust particle transfer.<br />
*:-Generate some data for kernel-independent FMM and write a paper on it.<br />
*:-Benchmark and add the turn-by-turn tracking model into JSPEC.<br />
<br><br />
<br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
''No report.''<br />
<br />
<br />
----<br />
'''LERF - S. Benson''' <br><br />
April 30-May 11<br />
*Worked on preparing the LERF for the isotope visit<br />
*Hosted Cooler ring meeting May 9th (no quorum for the meeting on the 2nd) and wrote up minutes<br />
*Prepared and presented talk for IOTA/FAST workshop and held discussions with NIU grad students about the FOA work.<br />
*Started putting together AWP for FOA proposal <br />
*Hosted visit from Steve Peggs for CBETA discussions<br />
<br />
May 14-25<br />
*Arrange for collaboration with HZDR for Elbe II facility.<br />
*Complete AWP for FOA proposal<br />
*Derive draft budget for isotope production<br />
*Revise LOD to match new ASE document.<br />
*Continue cleaning up the LERF for isotope visit.<br />
*Attend teleconference with DOE for isotope project.</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-05-11&diff=7932018-05-112018-05-14T13:52:51Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata'''<br><br />
''No report.'' Acting Accelerator Division Head.<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata'''<br><br />
Todd Satogata<br />
Previous two weeks (Apr 31-May 11)<br />
- IPAC18: Scientific secretariat work (student program, light peer review)<br />
- JLEIC: pCDR writing, template, EIC lunch, visitors (Peggs,<br />
Next two weeks (May 14-May 25)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: P&C Meeting (May 21)<br />
- ODU: Continue Randy advising, presentation to committee (May 24)<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: Prepare for summer student arrivals<br />
- IPAC18: Complete proceedings, light peer review, delegate survey<br />
- OPS: BTeam meetings, Hall D optics analysis<br />
<br />
Alex Bogacz<br />
Previous two weeks (Apr 31-May 11)<br />
- IPAC18: Apr 31-May 4 (light peer review)<br />
- VACATION: May 7-11<br />
Next two weeks (May 14-May 25)<br />
- IPAC18: Light peer review development<br />
- PERLE process followup<br />
<br />
Rui Li<br />
Previous two weeks (Apr 31-May 11)<br />
- IPAC18: Apr 31-May 4 (delegate)<br />
- IPAC18: CSR meeting with experts in field, path forward in field<br />
for theory, simulation, and experiment<br />
- JLEIC: Clean up IPAC papers, start pCDR documentation<br />
- JLEIC: Prepare for impedance meeting<br />
Next two weeks (May 14-May 25)<br />
- JLEIC: Impedance meeting (May 14)<br />
- JLEIC: Work on pCDR writeup<br />
- VACATION: (May 17-18)<br />
<br />
Ed Nissen<br />
Previous two weeks (Apr 31-May 11)<br />
- JLEIC: Finalize IPAC paper<br />
- JLEIC: Reading up on octupole detuning, set up madx optimization<br />
- JLEIC: initial draft writing for pCDR<br />
Next two weeks (May 14-May 25)<br />
- JLEIC: Finish draft writing for pCDR<br />
- JLEIC: Continue booster nonlinear optimization work<br />
<br />
Chris Tennant<br />
Previous two weeks (Apr 31-May 11)<br />
- IPAC18: Apr 31-May 4 (delegate)<br />
- IPAC18: Finish IPAC papers and documentw rok<br />
Next two weeks (May 14-May 25)<br />
- ADMIN: Migrate laptops (to Dave's old one)<br />
- JLEIC: translate DIMAD ERL-to-CCR transport to elegant<br />
to build up full S2E of cooler<br />
- PERLE: Continued CSR analysis<br />
<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
''No report''<br />
<br />
<br />
----<br />
'''Computational Physicss - Y. Roblin'''<br><br />
Kirsten Deitrick<br />
*Last two weeks:<br />
**Straight Merger at CBeta:<br />
*:-finish figures<br />
*:-make presentation for CBeta<br />
*:-data taking during experiment at CBeta<br />
**CSR:<br />
*:-continue working on KEK CSR tech note<br />
**eCloud:<br />
*:-tracking ion beam parameters around ring<br />
*:-have received NERSC allocation/account - working on getting script from Jean-Luc Vay for WARP+POSINST<br />
*:-got in contact Jim Crittenden at Cornell<br />
*:-contact M. Furman about POSINST<br />
**Impedance:<br />
*:-send out request for meeting items<br />
**Meetings:<br />
*:-CBETA weekly meeting<br />
**Misc:<br />
*:-LINAC18 travel authorization<br />
*Next two weeks:<br />
**Magnetized beam:<br />
*:-zeroing after FEL booster<br />
*:-start evaluating merger options?<br />
**Straight Merger at CBeta:<br />
*:-redo simulations using machine settings (with/without slits)<br />
*:-analyze measurement data<br />
*:-work on write-up<br />
**CSR:<br />
*:-continue working on tech note for KEK CSR<br />
**eCloud:<br />
*:-continue following up with Furman, J.L. Vay, Crittenden<br />
*:-ion ring tracking for input into PyECLOUD<br />
**Impedance:<br />
*:-meeting<br />
**Meetings:<br />
*:-impedance<br />
*:-CASA<br />
*:-JLEIC R&D (x2)<br />
*:-Cooler (x2)<br />
<br><br />
<br />
Yves Roblin<br />
*CEBAF:<br />
*:-model audit.<br />
*:-audit of the 5 pass extraction setup., make a model for predicting the setup from correctors settings in the machine<br />
*:-re-setup of the extraction at 5 pass<br />
*:-beam studies<br />
*:-BTEAM meetings<br />
*:-raytrace/autosteer development.<br />
*:-preparing plan for summer shutdown (model development, etc..)<br />
*OTHER:<br />
*:-NSF proposal review due may 18<br />
*:-IPAC paper review<br />
*:-Nim Journal Review .<br />
*:-Computer Physics Communications journal Review due may 22<br />
<br><br />
<br />
He Zhang<br />
*JLEIC Cooling Simulation<br />
*:-Continue cooling simulations for JLEIC following Steve’s suggestion. First, compare the cooling with (a) round beam, (b) flat beam with reduce drift emittance, and (c) flat beam with unchanged drift emittance. Simulation suggests (b) provides the best cooling. (c) is slightly worse than (b), but obviously better than (a). (b) also avoids the difficulty to further reduce the drift emittance of the electron beam, so it may be preferred for JLEIC cooling. Second, simulate the cooling for high density proton beam for 64 GeV CM energy with 6.4 nC/bunch electron beam. Unfortunately, even with 6.4 nC/bunch electron beam, we still do not have enough cooling for the high density proton beam. We will need to reduce the proton beam current for an equilibrium between the IBS and cooling. Third, Simulate the cooling for 200 GeV proton beam with 3.2 nC/bunch electron beam. As expected, cooling is not strong enough. We will need to either reduce the proton current or increase the electron beam current. Some of the above results were presented in the cooling ring design meeting. I mentioned to Steve there are two things we should do to optimize the cooling. One is to use an optimizer, e.g. NSGA, to explore the proton beam parameter domain with a fixed electron beam. The other is to figure out which part of the ion ring contributes the most to the horizontal IBS and investigate whether we can optimize the optics to reduce the horizontal IBS. Probably we can start this after we finish the pCDR draft.<br />
*Fast Multipole Method<br />
*:-Generate new data to compare our traceless FMM code for Coulomb kernel with the pyfmmlib. Pyfmmlib is a Python wrapper for a well optimized Fortran FMM lib for Coulomb kernel and Helmholtz kernel. Our code is developed for illustration of the idea. We have been careful to avoid redundant calculations, but the code has not been fully optimized. The numerical results show that with a lower tensor rank for relative error about 1e-4 or larger, our code is faster. But as the tensor rank goes up, the pyfmmlib outperformed our code. This is as expected since the Cartesian tensor FMM has a higher order dependence on the rank than the solid harmonic FMM. Although our work reduce the order dependence from O(n6) to O(n5), it does not change the conclusion in general. But The Cartesian tensor FMM can be used for simulations with moderate accuracy requirement. The Cartesian tensor FMM also has higher flop rate than other FMMs. As the bandwidth becomes more expansive. The Cartesian tensor FMM may be preferred in future. I add the new data and some discussion of the Cartesian tensor FMM to the FMM manuscript and submitted the revised one to JCOMP.<br />
*:-Investigate a few math parsers and found one called metl, which allows to parse the expression into a function with user defined variables. I have tested this parser with my tpsa and da code. It supports the DAVector data type without problem. This means our kernel-independent FMM code will be able to treat different kernels without recompiling. I started to write a paper on the kernel-independent FMM. Now I am writing on the analytical part. Will need more numerical result to complete the paper. <br />
*Work plan in the following two weeks<br />
*:-Write for pCDR.<br />
*:-Write some code (probably in Python) to solve the dynamic equations for dust particle transfer.<br />
*:-Generate some data for kernel-independent FMM and write a paper on it.<br />
*:-Benchmark and add the turn-by-turn tracking model into JSPEC.<br />
<br><br />
<br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
''No report.''<br />
<br />
<br />
----<br />
'''LERF - S. Benson''' <br><br />
April 30-May 11<br />
*Worked on preparing the LERF for the isotope visit<br />
*Hosted Cooler ring meeting May 9th (no quorum for the meeting on the 2nd) and wrote up minutes<br />
*Prepared and presented talk for IOTA/FAST workshop and held discussions with NIU grad students about the FOA work.<br />
*Started putting together AWP for FOA proposal <br />
*Hosted visit from Steve Peggs for CBETA discussions<br />
<br />
May 14-25<br />
*Arrange for collaboration with HZDR for Elbe II facility.<br />
*Complete AWP for FOA proposal<br />
*Derive draft budget for isotope production<br />
*Revise LOD to match new ASE document.<br />
*Continue cleaning up the LERF for isotope visit.<br />
*Attend teleconference with DOE for isotope project.</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-05-11&diff=7922018-05-112018-05-14T13:51:57Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata'''<br><br />
''No report.'' Acting Accelerator Division Head.<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata'''<br><br />
Todd Satogata<br />
Previous two weeks (Apr 31-May 11)<br />
- IPAC18: Scientific secretariat work (student program, light peer review)<br />
- JLEIC: pCDR writing, template, EIC lunch, visitors (Peggs,<br />
Next two weeks (May 14-May 25)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: P&C Meeting (May 21)<br />
- ODU: Continue Randy advising, presentation to committee (May 24)<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: Prepare for summer student arrivals<br />
- IPAC18: Complete proceedings, light peer review, delegate survey<br />
- OPS: BTeam meetings, Hall D optics analysis<br />
<br />
Alex Bogacz<br />
Previous two weeks (Apr 31-May 11)<br />
- IPAC18: Apr 31-May 4 (light peer review)<br />
- VACATION: May 7-11<br />
Next two weeks (May 14-May 25)<br />
- IPAC18: Light peer review development<br />
- PERLE process followup<br />
<br />
Rui Li<br />
Previous two weeks (Apr 31-May 11)<br />
- IPAC18: Apr 31-May 4 (delegate)<br />
- IPAC18: CSR meeting with experts in field, path forward in field<br />
for theory, simulation, and experiment<br />
- JLEIC: Clean up IPAC papers, start pCDR documentation<br />
- JLEIC: Prepare for impedance meeting<br />
Next two weeks (May 14-May 25)<br />
- JLEIC: Impedance meeting (May 14)<br />
- JLEIC: Work on pCDR writeup<br />
- VACATION: (May 17-18)<br />
<br />
Ed Nissen<br />
Previous two weeks (Apr 31-May 11)<br />
- JLEIC: Finalize IPAC paper<br />
- JLEIC: Reading up on octupole detuning, set up madx optimization<br />
- JLEIC: initial draft writing for pCDR<br />
Next two weeks (May 14-May 25)<br />
- JLEIC: Finish draft writing for pCDR<br />
- JLEIC: Continue booster nonlinear optimization work<br />
<br />
Chris Tennant<br />
Previous two weeks (Apr 31-May 11)<br />
- IPAC18: Apr 31-May 4 (delegate)<br />
- IPAC18: Finish IPAC papers and documentw rok<br />
Next two weeks (May 14-May 25)<br />
- ADMIN: Migrate laptops (to Dave's old one)<br />
- JLEIC: translate DIMAD ERL-to-CCR transport to elegant<br />
to build up full S2E of cooler<br />
- PERLE: Continued CSR analysis<br />
<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
<br />
<br />
<br />
----<br />
'''Computational Physicss - Y. Roblin'''<br><br />
Kirsten Deitrick<br />
*Last two weeks:<br />
**Straight Merger at CBeta:<br />
*:-finish figures<br />
*:-make presentation for CBeta<br />
*:-data taking during experiment at CBeta<br />
**CSR:<br />
*:-continue working on KEK CSR tech note<br />
**eCloud:<br />
*:-tracking ion beam parameters around ring<br />
*:-have received NERSC allocation/account - working on getting script from Jean-Luc Vay for WARP+POSINST<br />
*:-got in contact Jim Crittenden at Cornell<br />
*:-contact M. Furman about POSINST<br />
**Impedance:<br />
*:-send out request for meeting items<br />
**Meetings:<br />
*:-CBETA weekly meeting<br />
**Misc:<br />
*:-LINAC18 travel authorization<br />
*Next two weeks:<br />
**Magnetized beam:<br />
*:-zeroing after FEL booster<br />
*:-start evaluating merger options?<br />
**Straight Merger at CBeta:<br />
*:-redo simulations using machine settings (with/without slits)<br />
*:-analyze measurement data<br />
*:-work on write-up<br />
**CSR:<br />
*:-continue working on tech note for KEK CSR<br />
**eCloud:<br />
*:-continue following up with Furman, J.L. Vay, Crittenden<br />
*:-ion ring tracking for input into PyECLOUD<br />
**Impedance:<br />
*:-meeting<br />
**Meetings:<br />
*:-impedance<br />
*:-CASA<br />
*:-JLEIC R&D (x2)<br />
*:-Cooler (x2)<br />
<br><br />
<br />
Yves Roblin<br />
*CEBAF:<br />
*:-model audit.<br />
*:-audit of the 5 pass extraction setup., make a model for predicting the setup from correctors settings in the machine<br />
*:-re-setup of the extraction at 5 pass<br />
*:-beam studies<br />
*:-BTEAM meetings<br />
*:-raytrace/autosteer development.<br />
*:-preparing plan for summer shutdown (model development, etc..)<br />
*OTHER:<br />
*:-NSF proposal review due may 18<br />
*:-IPAC paper review<br />
*:-Nim Journal Review .<br />
*:-Computer Physics Communications journal Review due may 22<br />
<br><br />
<br />
He Zhang<br />
*JLEIC Cooling Simulation<br />
*:-Continue cooling simulations for JLEIC following Steve’s suggestion. First, compare the cooling with (a) round beam, (b) flat beam with reduce drift emittance, and (c) flat beam with unchanged drift emittance. Simulation suggests (b) provides the best cooling. (c) is slightly worse than (b), but obviously better than (a). (b) also avoids the difficulty to further reduce the drift emittance of the electron beam, so it may be preferred for JLEIC cooling. Second, simulate the cooling for high density proton beam for 64 GeV CM energy with 6.4 nC/bunch electron beam. Unfortunately, even with 6.4 nC/bunch electron beam, we still do not have enough cooling for the high density proton beam. We will need to reduce the proton beam current for an equilibrium between the IBS and cooling. Third, Simulate the cooling for 200 GeV proton beam with 3.2 nC/bunch electron beam. As expected, cooling is not strong enough. We will need to either reduce the proton current or increase the electron beam current. Some of the above results were presented in the cooling ring design meeting. I mentioned to Steve there are two things we should do to optimize the cooling. One is to use an optimizer, e.g. NSGA, to explore the proton beam parameter domain with a fixed electron beam. The other is to figure out which part of the ion ring contributes the most to the horizontal IBS and investigate whether we can optimize the optics to reduce the horizontal IBS. Probably we can start this after we finish the pCDR draft.<br />
*Fast Multipole Method<br />
*:-Generate new data to compare our traceless FMM code for Coulomb kernel with the pyfmmlib. Pyfmmlib is a Python wrapper for a well optimized Fortran FMM lib for Coulomb kernel and Helmholtz kernel. Our code is developed for illustration of the idea. We have been careful to avoid redundant calculations, but the code has not been fully optimized. The numerical results show that with a lower tensor rank for relative error about 1e-4 or larger, our code is faster. But as the tensor rank goes up, the pyfmmlib outperformed our code. This is as expected since the Cartesian tensor FMM has a higher order dependence on the rank than the solid harmonic FMM. Although our work reduce the order dependence from O(n6) to O(n5), it does not change the conclusion in general. But The Cartesian tensor FMM can be used for simulations with moderate accuracy requirement. The Cartesian tensor FMM also has higher flop rate than other FMMs. As the bandwidth becomes more expansive. The Cartesian tensor FMM may be preferred in future. I add the new data and some discussion of the Cartesian tensor FMM to the FMM manuscript and submitted the revised one to JCOMP.<br />
*:-Investigate a few math parsers and found one called metl, which allows to parse the expression into a function with user defined variables. I have tested this parser with my tpsa and da code. It supports the DAVector data type without problem. This means our kernel-independent FMM code will be able to treat different kernels without recompiling. I started to write a paper on the kernel-independent FMM. Now I am writing on the analytical part. Will need more numerical result to complete the paper. <br />
*Work plan in the following two weeks<br />
*:-Write for pCDR.<br />
*:-Write some code (probably in Python) to solve the dynamic equations for dust particle transfer.<br />
*:-Generate some data for kernel-independent FMM and write a paper on it.<br />
*:-Benchmark and add the turn-by-turn tracking model into JSPEC.<br />
<br><br />
<br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
<br />
<br />
<br />
----<br />
'''LERF - S. Benson''' <br><br />
April 30-May 11<br />
*Worked on preparing the LERF for the isotope visit<br />
*Hosted Cooler ring meeting May 9th (no quorum for the meeting on the 2nd) and wrote up minutes<br />
*Prepared and presented talk for IOTA/FAST workshop and held discussions with NIU grad students about the FOA work.<br />
*Started putting together AWP for FOA proposal <br />
*Hosted visit from Steve Peggs for CBETA discussions<br />
<br />
May 14-25<br />
*Arrange for collaboration with HZDR for Elbe II facility.<br />
*Complete AWP for FOA proposal<br />
*Derive draft budget for isotope production<br />
*Revise LOD to match new ASE document.<br />
*Continue cleaning up the LERF for isotope visit.<br />
*Attend teleconference with DOE for isotope project.</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-05-11&diff=7912018-05-112018-05-14T13:50:21Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata'''<br><br />
''No report.'' Acting Accelerator Division Head.<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata'''<br><br />
Todd Satogata<br />
Previous two weeks (Apr 31-May 11)<br />
- IPAC18: Scientific secretariat work (student program, light peer review)<br />
- JLEIC: pCDR writing, template, EIC lunch, visitors (Peggs,<br />
Next two weeks (May 14-May 25)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: P&C Meeting (May 21)<br />
- ODU: Continue Randy advising, presentation to committee (May 24)<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: Prepare for summer student arrivals<br />
- IPAC18: Complete proceedings, light peer review, delegate survey<br />
- OPS: BTeam meetings, Hall D optics analysis<br />
<br />
Alex Bogacz<br />
Previous two weeks (Apr 31-May 11)<br />
- IPAC18: Apr 31-May 4 (light peer review)<br />
- VACATION: May 7-11<br />
Next two weeks (May 14-May 25)<br />
- IPAC18: Light peer review development<br />
- PERLE process followup<br />
<br />
Rui Li<br />
Previous two weeks (Apr 31-May 11)<br />
- IPAC18: Apr 31-May 4 (delegate)<br />
- IPAC18: CSR meeting with experts in field, path forward in field<br />
for theory, simulation, and experiment<br />
- JLEIC: Clean up IPAC papers, start pCDR documentation<br />
- JLEIC: Prepare for impedance meeting<br />
Next two weeks (May 14-May 25)<br />
- JLEIC: Impedance meeting (May 14)<br />
- JLEIC: Work on pCDR writeup<br />
- VACATION: (May 17-18)<br />
<br />
Ed Nissen<br />
Previous two weeks (Apr 31-May 11)<br />
- JLEIC: Finalize IPAC paper<br />
- JLEIC: Reading up on octupole detuning, set up madx optimization<br />
- JLEIC: initial draft writing for pCDR<br />
Next two weeks (May 14-May 25)<br />
- JLEIC: Finish draft writing for pCDR<br />
- JLEIC: Continue booster nonlinear optimization work<br />
<br />
Chris Tennant<br />
Previous two weeks (Apr 31-May 11)<br />
- IPAC18: Apr 31-May 4 (delegate)<br />
- IPAC18: Finish IPAC papers and documentw rok<br />
Next two weeks (May 14-May 25)<br />
- ADMIN: Migrate laptops (to Dave's old one)<br />
- JLEIC: translate DIMAD ERL-to-CCR transport to elegant<br />
to build up full S2E of cooler<br />
- PERLE: Continued CSR analysis<br />
<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
<br />
<br />
<br />
----<br />
'''Computational Physicss - Y. Roblin'''<br><br />
Kirsten Deitrick<br />
*Last two weeks:<br />
**Straight Merger at CBeta:<br />
*:-finish figures<br />
*:-make presentation for CBeta<br />
*:-data taking during experiment at CBeta<br />
**CSR:<br />
*:-continue working on KEK CSR tech note<br />
**eCloud:<br />
*:-tracking ion beam parameters around ring<br />
*:-have received NERSC allocation/account - working on getting script from Jean-Luc Vay for WARP+POSINST<br />
*:-got in contact Jim Crittenden at Cornell<br />
*:-contact M. Furman about POSINST<br />
**Impedance:<br />
*:-send out request for meeting items<br />
**Meetings:<br />
*:-CBETA weekly meeting<br />
**Misc:<br />
*:-LINAC18 travel authorization<br />
*Next two weeks:<br />
**Magnetized beam:<br />
*:-zeroing after FEL booster<br />
*:-start evaluating merger options?<br />
**Straight Merger at CBeta:<br />
*:-redo simulations using machine settings (with/without slits)<br />
*:-analyze measurement data<br />
*:-work on write-up<br />
**CSR:<br />
*:-continue working on tech note for KEK CSR<br />
**eCloud:<br />
*:-continue following up with Furman, J.L. Vay, Crittenden<br />
*:-ion ring tracking for input into PyECLOUD<br />
**Impedance:<br />
*:-meeting<br />
**Meetings:<br />
*:-impedance<br />
*:-CASA<br />
*:-JLEIC R&D (x2)<br />
*:-Cooler (x2)<br />
<br><br />
<br />
Yves Roblin<br />
**CEBAF:<br />
*:-model audit.<br />
*:-audit of the 5 pass extraction setup., make a model for predicting the setup from correctors settings in the machine<br />
*:-re-setup of the extraction at 5 pass<br />
*:-beam studies<br />
*:-BTEAM meetings<br />
*:-raytrace/autosteer development.<br />
*:-preparing plan for summer shutdown (model development, etc..)<br />
**OTHER:<br />
*:-NSF proposal review due may 18<br />
*:-IPAC paper review<br />
*:-Nim Journal Review .<br />
*:-Computer Physics Communications journal Review due may 22<br />
<br />
He Zhang<br />
<br />
JLEIC Cooling Simulation<br />
Continue cooling simulations for JLEIC following Steve’s suggestion. First, compare the cooling with (a) round beam, (b) flat beam with reduce drift emittance, and (c) flat beam with unchanged drift emittance. Simulation suggests (b) provides the best cooling. (c) is slightly worse than (b), but obviously better than (a). (b) also avoids the difficulty to further reduce the drift emittance of the electron beam, so it may be preferred for JLEIC cooling. Second, simulate the cooling for high density proton beam for 64 GeV CM energy with 6.4 nC/bunch electron beam. Unfortunately, even with 6.4 nC/bunch electron beam, we still do not have enough cooling for the high density proton beam. We will need to reduce the proton beam current for an equilibrium between the IBS and cooling. Third, Simulate the cooling for 200 GeV proton beam with 3.2 nC/bunch electron beam. As expected, cooling is not strong enough. We will need to either reduce the proton current or increase the electron beam current. Some of the above results were presented in the cooling ring design meeting. I mentioned to Steve there are two things we should do to optimize the cooling. One is to use an optimizer, e.g. NSGA, to explore the proton beam parameter domain with a fixed electron beam. The other is to figure out which part of the ion ring contributes the most to the horizontal IBS and investigate whether we can optimize the optics to reduce the horizontal IBS. Probably we can start this after we finish the pCDR draft.<br />
<br />
Fast Multipole Method<br />
<br />
Generate new data to compare our traceless FMM code for Coulomb kernel with the pyfmmlib. Pyfmmlib is a Python wrapper for a well optimized Fortran FMM lib for Coulomb kernel and Helmholtz kernel. Our code is developed for illustration of the idea. We have been careful to avoid redundant calculations, but the code has not been fully optimized. The numerical results show that with a lower tensor rank for relative error about 1e-4 or larger, our code is faster. But as the tensor rank goes up, the pyfmmlib outperformed our code. This is as expected since the Cartesian tensor FMM has a higher order dependence on the rank than the solid harmonic FMM. Although our work reduce the order dependence from O(n6) to O(n5), it does not change the conclusion in general. But The Cartesian tensor FMM can be used for simulations with moderate accuracy requirement. The Cartesian tensor FMM also has higher flop rate than other FMMs. As the bandwidth becomes more expansive. The Cartesian tensor FMM may be preferred in future. I add the new data and some discussion of the Cartesian tensor FMM to the FMM manuscript and submitted the revised one to JCOMP.<br />
<br />
Investigate a few math parsers and found one called metl, which allows to parse the expression into a function with user defined variables. I have tested this parser with my tpsa and da code. It supports the DAVector data type without problem. This means our kernel-independent FMM code will be able to treat different kernels without recompiling. I started to write a paper on the kernel-independent FMM. Now I am writing on the analytical part. Will need more numerical result to complete the paper. <br />
<br />
Work plan in the following two weeks<br />
<br />
Write for pCDR.<br />
Write some code (probably in Python) to solve the dynamic equations for dust particle transfer.<br />
Generate some data for kernel-independent FMM and write a paper on it.<br />
Benchmark and add the turn-by-turn tracking model into JSPEC.<br />
<br />
<br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
<br />
<br />
<br />
----<br />
'''LERF - S. Benson''' <br><br />
April 30-May 11<br />
*Worked on preparing the LERF for the isotope visit<br />
*Hosted Cooler ring meeting May 9th (no quorum for the meeting on the 2nd) and wrote up minutes<br />
*Prepared and presented talk for IOTA/FAST workshop and held discussions with NIU grad students about the FOA work.<br />
*Started putting together AWP for FOA proposal <br />
*Hosted visit from Steve Peggs for CBETA discussions<br />
<br />
May 14-25<br />
*Arrange for collaboration with HZDR for Elbe II facility.<br />
*Complete AWP for FOA proposal<br />
*Derive draft budget for isotope production<br />
*Revise LOD to match new ASE document.<br />
*Continue cleaning up the LERF for isotope visit.<br />
*Attend teleconference with DOE for isotope project.</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-05-11&diff=7902018-05-112018-05-14T13:38:58Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata'''<br><br />
''No report.'' Acting Accelerator Division Head.<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata'''<br><br />
Todd Satogata<br />
Previous two weeks (Apr 31-May 11)<br />
- IPAC18: Scientific secretariat work (student program, light peer review)<br />
- JLEIC: pCDR writing, template, EIC lunch, visitors (Peggs,<br />
Next two weeks (May 14-May 25)<br />
- JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings<br />
- JLEIC: P&C Meeting (May 21)<br />
- ODU: Continue Randy advising, presentation to committee (May 24)<br />
- ADMIN: Leadership/group meetings, staffing input and planning<br />
- ADMIN: Prepare for summer student arrivals<br />
- IPAC18: Complete proceedings, light peer review, delegate survey<br />
- OPS: BTeam meetings, Hall D optics analysis<br />
<br />
Alex Bogacz<br />
Previous two weeks (Apr 31-May 11)<br />
- IPAC18: Apr 31-May 4 (light peer review)<br />
- VACATION: May 7-11<br />
Next two weeks (May 14-May 25)<br />
- IPAC18: Light peer review development<br />
- PERLE process followup<br />
<br />
Rui Li<br />
Previous two weeks (Apr 31-May 11)<br />
- IPAC18: Apr 31-May 4 (delegate)<br />
- IPAC18: CSR meeting with experts in field, path forward in field<br />
for theory, simulation, and experiment<br />
- JLEIC: Clean up IPAC papers, start pCDR documentation<br />
- JLEIC: Prepare for impedance meeting<br />
Next two weeks (May 14-May 25)<br />
- JLEIC: Impedance meeting (May 14)<br />
- JLEIC: Work on pCDR writeup<br />
- VACATION: (May 17-18)<br />
<br />
Ed Nissen<br />
Previous two weeks (Apr 31-May 11)<br />
- JLEIC: Finalize IPAC paper<br />
- JLEIC: Reading up on octupole detuning, set up madx optimization<br />
- JLEIC: initial draft writing for pCDR<br />
Next two weeks (May 14-May 25)<br />
- JLEIC: Finish draft writing for pCDR<br />
- JLEIC: Continue booster nonlinear optimization work<br />
<br />
Chris Tennant<br />
Previous two weeks (Apr 31-May 11)<br />
- IPAC18: Apr 31-May 4 (delegate)<br />
- IPAC18: Finish IPAC papers and documentw rok<br />
Next two weeks (May 14-May 25)<br />
- ADMIN: Migrate laptops (to Dave's old one)<br />
- JLEIC: translate DIMAD ERL-to-CCR transport to elegant<br />
to build up full S2E of cooler<br />
- PERLE: Continued CSR analysis<br />
<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
<br />
<br />
<br />
----<br />
'''Computational Physicss - Y. Roblin'''<br><br />
<br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
<br />
<br />
<br />
----<br />
'''LERF - S. Benson''' <br><br />
April 30-May 11<br />
*Worked on preparing the LERF for the isotope visit<br />
*Hosted Cooler ring meeting May 9th (no quorum for the meeting on the 2nd) and wrote up minutes<br />
*Prepared and presented talk for IOTA/FAST workshop and held discussions with NIU grad students about the FOA work.<br />
*Started putting together AWP for FOA proposal <br />
*Hosted visit from Steve Peggs for CBETA discussions<br />
<br />
May 14-25<br />
*Arrange for collaboration with HZDR for Elbe II facility.<br />
*Complete AWP for FOA proposal<br />
*Derive draft budget for isotope production<br />
*Revise LOD to match new ASE document.<br />
*Continue cleaning up the LERF for isotope visit.<br />
*Attend teleconference with DOE for isotope project.</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-05-11&diff=7892018-05-112018-05-14T13:38:02Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata'''<br><br />
''No report.'' Acting Accelerator Division Head.<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata'''<br><br />
<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
<br />
<br />
<br />
----<br />
'''Computational Physicss - Y. Roblin'''<br><br />
<br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
<br />
<br />
<br />
----<br />
'''LERF - S. Benson''' <br><br />
April 30-May 11<br />
*Worked on preparing the LERF for the isotope visit<br />
*Hosted Cooler ring meeting May 9th (no quorum for the meeting on the 2nd) and wrote up minutes<br />
*Prepared and presented talk for IOTA/FAST workshop and held discussions with NIU grad students about the FOA work.<br />
*Started putting together AWP for FOA proposal <br />
*Hosted visit from Steve Peggs for CBETA discussions<br />
<br />
May 14-25<br />
*Arrange for collaboration with HZDR for Elbe II facility.<br />
*Complete AWP for FOA proposal<br />
*Derive draft budget for isotope production<br />
*Revise LOD to match new ASE document.<br />
*Continue cleaning up the LERF for isotope visit.<br />
*Attend teleconference with DOE for isotope project.</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-05-11&diff=7882018-05-112018-05-14T13:37:22Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata'''<br><br />
''No report.'' Acting Accelerator Division Head.<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata'''<br><br />
<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
<br />
<br />
<br />
----<br />
'''Computational Physicss - Y. Roblin'''<br><br />
<br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
<br />
<br />
<br />
----<br />
'''LERF - S. Benson''' <br><br />
April 30-May 11<br />
**Worked on preparing the LERF for the isotope visit<br />
**Hosted Cooler ring meeting May 9th (no quorum for the meeting on the 2nd) and wrote up minutes<br />
**Prepared and presented talk for IOTA/FAST workshop and held discussions with NIU grad students about the FOA work.<br />
**Started putting together AWP for FOA proposal <br />
**Hosted visit from Steve Peggs for CBETA discussions<br />
<br />
May 14-25<br />
**Arrange for collaboration with HZDR for Elbe II facility.<br />
**Complete AWP for FOA proposal<br />
**Derive draft budget for isotope production<br />
**Revise LOD to match new ASE document.<br />
**Continue cleaning up the LERF for isotope visit.<br />
**Attend teleconference with DOE for isotope project.</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-05-11&diff=7872018-05-112018-05-14T13:33:25Z<p>Anichols: Created page with "'''Director - M. Spata'''<br> ''No report.'' Acting Accelerator Division Head. ---- '''Accelerator Physics - T. Satogata'''<br> ---- '''Accelerator R &amp; D - Y. Zhang'..."</p>
<hr />
<div>'''Director - M. Spata'''<br><br />
''No report.'' Acting Accelerator Division Head.<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata'''<br><br />
<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
<br />
<br />
<br />
----<br />
'''Computational Physicss - Y. Roblin'''<br><br />
<br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan''' <br><br />
<br />
<br />
<br />
----<br />
'''LERF - S. Benson''' <br></div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018&diff=78620182018-05-14T13:29:24Z<p>Anichols: </p>
<hr />
<div><br />
[[2018-05-11]]<br><br />
[[2018-04-27]]<br><br />
[[2018-04-13]]<br><br />
[[2018-03-30]]<br><br />
[[2018-03-16]]<br><br />
[[2018-03-02]]<br><br />
[[2018-02-16]]<br><br />
[[2018-02-02]]<br><br />
[[2018-01-22]]<br></div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-04-27&diff=7852018-04-272018-05-01T13:44:23Z<p>Anichols: </p>
<hr />
<div>'''Director - Mike Spata'''<br><br />
''No report.'' Acting Accelerator Division Head<br><br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata'''<br><br />
''No report.'' IPAC '18<br><br />
<br />
<br />
----<br />
'''Accelerator R and D - Y. Zhang'''<br><br />
''No report.'' IPAC '18<br><br />
<br />
<br />
----<br />
'''Computational Physics - Y. Roblin''' <br><br />
''No report.'' <br><br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan'''<br><br />
''No report.'' <br />
<br />
<br />
----<br />
'''LERF - S. Benson'''<br />
*April 16-27<br />
**Hosted Cooler Ring meetings on April 18th and 25th. and wrote up minutes.<br />
**Finished up FACET II review for SLAC<br />
**Prepared and submitted revised statement of work, milestones, and budget for FOA proposal<br />
**Submitted final version of the JPos 17 paper for AIP<br />
**Prepared and printed IPAC18 poster<br />
**Wrote and submitted paper for IPAC18<br />
**Started planning for Isotope meeting in June<br />
**Reviewed several papers for IPAC.<br />
**Arranged for travel to Fermilab for IOTA/FAST workshop<br />
<br />
*April 30-May 11<br />
**Continue to prepare the LERF for the isotope visit<br />
**Host Cooler ring meetings May 2nd and 9th<br />
**Prepare talk for IOTA/FAST workshop<br />
**Start putting together AWP for FOA proposal <br />
**Travel to Fermilab for IOTA/FAST workshop and present talk.<br />
**Arrange for collaboration with HZDR for Elbe II facility.<br />
**Host visit from Steve Peggs for CBETA discussions</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-04-27&diff=7842018-04-272018-05-01T13:44:04Z<p>Anichols: </p>
<hr />
<div>'''Director - Mike Spata'''<br><br />
''No report.'' Acting Accelerator Division Head<br><br />
<br />
----<br />
'''Accelerator Physics - T. Satogata'''<br><br />
''No report.'' IPAC '18<br><br />
<br />
<br />
----<br />
'''Accelerator R and D - Y. Zhang'''<br><br />
''No report.'' IPAC '18<br><br />
<br />
<br />
----<br />
'''Computational Physics - Y. Roblin''' <br><br />
''No report.'' <br><br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan'''<br><br />
''No report.'' <br />
<br />
<br />
----<br />
'''LERF - S. Benson'''<br />
*April 16-27<br />
**Hosted Cooler Ring meetings on April 18th and 25th. and wrote up minutes.<br />
**Finished up FACET II review for SLAC<br />
**Prepared and submitted revised statement of work, milestones, and budget for FOA proposal<br />
**Submitted final version of the JPos 17 paper for AIP<br />
**Prepared and printed IPAC18 poster<br />
**Wrote and submitted paper for IPAC18<br />
**Started planning for Isotope meeting in June<br />
**Reviewed several papers for IPAC.<br />
**Arranged for travel to Fermilab for IOTA/FAST workshop<br />
<br />
*April 30-May 11<br />
**Continue to prepare the LERF for the isotope visit<br />
**Host Cooler ring meetings May 2nd and 9th<br />
**Prepare talk for IOTA/FAST workshop<br />
**Start putting together AWP for FOA proposal <br />
**Travel to Fermilab for IOTA/FAST workshop and present talk.<br />
**Arrange for collaboration with HZDR for Elbe II facility.<br />
**Host visit from Steve Peggs for CBETA discussions</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-04-27&diff=7832018-04-272018-05-01T13:42:46Z<p>Anichols: Created page with "Director - Mike Spata ---- '''Accelerator Physics - T. Satogata''' No report. IPAC '18 ---- '''Accelerator R and D - Y. Zhang''' No report. IPAC '18 ---- '''Computatio..."</p>
<hr />
<div>Director - Mike Spata<br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata'''<br />
No report. IPAC '18<br />
<br />
<br />
----<br />
'''Accelerator R and D - Y. Zhang'''<br />
No report. IPAC '18<br />
<br />
<br />
----<br />
'''Computational Physics - Y. Roblin''' <br />
No report. <br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan'''<br />
No report. <br />
<br />
<br />
----<br />
'''LERF - S. Benson'''<br />
*April 16-27<br />
**Hosted Cooler Ring meetings on April 18th and 25th. and wrote up minutes.<br />
**Finished up FACET II review for SLAC<br />
**Prepared and submitted revised statement of work, milestones, and budget for FOA proposal<br />
**Submitted final version of the JPos 17 paper for AIP<br />
**Prepared and printed IPAC18 poster<br />
**Wrote and submitted paper for IPAC18<br />
**Started planning for Isotope meeting in June<br />
**Reviewed several papers for IPAC.<br />
**Arranged for travel to Fermilab for IOTA/FAST workshop<br />
<br />
*April 30-May 11<br />
**Continue to prepare the LERF for the isotope visit<br />
**Host Cooler ring meetings May 2nd and 9th<br />
**Prepare talk for IOTA/FAST workshop<br />
**Start putting together AWP for FOA proposal <br />
**Travel to Fermilab for IOTA/FAST workshop and present talk.<br />
**Arrange for collaboration with HZDR for Elbe II facility.<br />
**Host visit from Steve Peggs for CBETA discussions</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018&diff=78220182018-05-01T13:37:30Z<p>Anichols: </p>
<hr />
<div><br />
[[2018-04-27]]<br><br />
[[2018-04-13]]<br><br />
[[2018-03-30]]<br><br />
[[2018-03-16]]<br><br />
[[2018-03-02]]<br><br />
[[2018-02-16]]<br><br />
[[2018-02-02]]<br><br />
[[2018-01-22]]<br></div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-04-13&diff=7812018-04-132018-04-19T14:31:52Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata'''<br><br />
''No report.'' Acting Accelerator Division Head <br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata'''<br><br />
Todd Satogata<br />
Previous two weeks (Apr 2-Apr 13)<br />
- ADMIN: Eric Thompson thesis input, diss defense (Apr 12, CNU)<br />
- ADMIN: Leadership/group meetings, AWP updates<br />
- IPAC18: Scientific secretariat work (student program, light peer review)<br />
- JLEIC: Followup collaboration meet input, pCDR outline/infrastructure, lunches<br />
- JLEIC: ion dump info to Vasiliy<br />
- ODU: Continue teaching PHYS 417/517 Tue/Thu, Randy advising<br />
- OPS: Hall D TAC runs support, CEBAF reference ops plan input<br />
- OPS: Hall D beam convergence iterations<br />
- OPS: Plan OOC, Beam Studies (Tuesdays), BTeam, optics support/tuning meetings<br />
Next two weeks (Apr 16-Apr 27)<br />
- ADMIN: Eric Thompson final thesis revision input<br />
- ADMIN: Leadership/group meetings, staffing input<br />
- IPAC18: Travel, editing, conference secretariat (Apr 25-May 5)<br />
- JLEIC: Followup collaboration meet input, pCDR outline/infrastructure, lunches<br />
- ODU: Finish teaching PHYS 417/517 Tue/Thu, Continue Randy advising<br />
- OPS: Hall D TAC runs support, CEBAF reference ops plan input<br />
<br />
Alex Bogacz<br />
Previous two weeks (Apr 2-Apr 13)<br />
- IPAC18: Light peer review organization<br />
- PERLE: Lattice to Yves for conversion to elegant, IPAC paper<br />
- LHeC: Parametric studies<br />
- ADMIN: REU student assignments<br />
Next two weeks (Apr 16-Apr 27)<br />
- IPAC18: Light peer review organization<br />
- IPAC18: Poster and paper preparation (PERLE)<br />
- OPS: Arc2 optics refinement<br />
<br />
Rui Li<br />
Previous two weeks (Apr 2-Apr 13)<br />
- JLEIC: Work more on the ion effect in the JLEIC e-ring<br />
- JLEIC: Give the presentation on ion effect in the JLEIC e-ring<br />
at Apr 12 R&D meeting<br />
- IPAC18 Plan and start writing JLEIC Collective Effects paper<br />
- VACATION: Apr 13<br />
Next two weeks (Apr 16-Apr 27)<br />
- VACATION: Apr 16<br />
- IPAC18: Finish JLEIC Collective Effects Paper<br />
- IPAC18: Plan and start writing JLEIC Coupled Bunch Instability paper<br />
- IPAC18: Prepare posters before travel<br />
<br />
Ed Nissen<br />
Previous two weeks (Apr 2-Apr 13)<br />
- JLEIC: Evaluate possibilities for increasing Booster size<br />
- JLEIC: Begin work on retuning, including octupoles to manage<br />
significant amplitude-dependent-detuning seen<br />
- IPAC18: Plan and start writing Booster design paper<br />
Next two weeks (Apr 16-Apr 27)<br />
- JLEIC: Continue DESIREE LDRD preparation, budgeting<br />
- IPAC18: Finish Booster design paper, poster<br />
- JLEIC: Research and add octupoles to booster<br />
<br />
Chris Tennant<br />
Previous two weeks (Apr 2-Apr 13)<br />
- IPAC18: Finish paper and poster, write text for PERLE paper<br />
- JLEIC: trying to get beam through 11 turns of the CCR:<br />
added faux RF cavity to add energy lost to CSR, fix chirp<br />
imposed by CSR wake, added fake collimator to remove head/tail<br />
particles that go to high energy<br />
- JLEIC: thinking through pre-CDR outline and work to be done<br />
Next two weeks (Apr 16-Apr 27)<br />
- PERLE: evaluate mBI gain for 3 passes up (Vlasov-solver)<br />
- PERLE: push a distribution through the system with and without<br />
CSR (elegant lattice from Yves/Alex)<br />
- JLEIC: deep dive on CCR arcs to try and understand why<br />
"simple arc" is so much better at mBI than all the others<br />
we've evaluated<br />
<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
Fanglei Lin<br />
*Investigated JLEIC collider rings’ geometry and presented in the JLEIC R&D meeting.<br />
*Working on optimizing a new electron ring that fits in the JLab site.<br />
*Continuing single particle nonlinear dynamics study for the electron ring.<br />
*Miscellaneous: provided optics support for the crabbing study in the electron ring, attended discussion on JLEIC alternative layouts, attended CASA group meeting, attended the JLEIC R&D meetings, attended JLEIC general meeting, attended JLEIC detector meeting.<br />
<br><br />
Vasiliy Morozov<br />
*R&D planning: updating funded FOA project scopes, prioritizing unfunded proposals and discussing them with DoE<br />
*Preparation of IPAC'18 papers and posters: crab crossing with River and polarization with Anatoliy<br />
*Exploring options for collider ring geometries<br />
*Study of a higher-energy JLEIC option<br />
*Preparation of three presentations for DIS'18<br />
*Work on geometry tagging LDRD: teleconference with collaborators and preparation of a mid-year report<br />
<br><br />
Amy Sy<br />
*Working on an LDRD proposal for a laser-driven polarized deuteron source for JLEIC. The concept involves a new way to nuclearly-polarize deuterons that are bound in deuterium halide molecules (DCl, DBr, etc.) using a few pulses of IR laser light to excite a rotational state in the molecule. The rotational polarization couples to the nuclear polarizations of the bound atoms through the hyperfine interaction, and the atoms are dissociated with another laser pulse at an appropriate time where the polarization on the deuteron is maximal. The LDRD proposal only covers the neutral polarized atom source as the first stage for a JLEIC polarized ion source - polarized ions could be generated with the proposed source by the resonant charge-exchange ionization method utilized in existing atomic beam polarized ion sources.<br />
*Discussions on the Counter ERL concept, including the possibility of deeper energy recovery by merging/splitting the counter-propagating orbits near the electron gun.<br />
*Working with H. Huang and V. Morozov on crab dynamics paper for presentation at IPAC18.<br />
*Preparing IPAC18 presentation materials on toroidal merger simulations.<br />
<br><br />
Guohui Wei<br />
*Begin to do error study on electron collider ring. I assumed misalignment, strength error to the magnets in a FODO lattice of electron collider ring. And I add one corrector kicker and one monitor on each side of every quadrupole. I found the lattice is more sensitive compared with the lattice in ion collider ring.<br />
*LDRD study of the geometry tagging after the collision. Mark Baker successfully made the output events of 40k J/psi incoherent decay. After cutting with trueX<0.01, trueQ2<10.0(Q2>1), and with status==1, each event have:1 scattered electron and either an e+e- pair or a mu+mu- pair. After cutting with Nnevap==0, there are 1181 events left to match the figure from the white paper.<br />
*Begin to write the proceeding paper of 'Status of the JLEIC Ion Collider Ring Design' in IPAC'18<br />
<br><br />
Yuhong Zhang<br />
*Prepared talk slides for APS conferences<br />
*Worked on IPAC posters<br />
*Worked on various issues on JLEIC and attended many meetings<br />
<br />
<br />
----<br />
'''Computational Physics - Y. Roblin'''<br><br />
Kirsten Deitrick:<br />
*Mar. 31 - Apr. 13<br />
**Cornell Straight Merger:<br />
*:-have made 3D field map out of truncated 1D field map for coil pair<br />
*:-run for straight merger experiment<br />
*:-run for extended amplitude<br />
*:-prepping 3D field map of fundamental + third for comparison<br />
**CSR:<br />
*:-combine parameter sweep results, get nominal operating parameters<br />
*:-run CSR+SC+shielding for Chris<br />
*:-attempt to fix segmentation fault problem<br />
**eCloud:<br />
*:-can successfully run PyECLOUD on non-JLab laptop; working to get devl79 install functioning<br />
*:-can now run on devl79; beginning to benchmark against Shahid's work (for reference)<br />
**Impedance:<br />
*:-scheduled next meeting for May 14th at 10<br />
**Meetings:<br />
*:-CASA<br />
*:-Cooler<br />
**Misc:<br />
*:-put in Linac'18 abstracts (invited talk, Straight Merger, Magnetized injector, eCloud)<br />
*:-SL 4/5-4/6, 4/12<br />
*Apr. 14 - Apr. 27<br />
**Magnetized Beam:<br />
*:-fix booster in both options<br />
*:-fix asymmetries in FEL<br />
*:-start scanning for charges/field/spot size<br />
**Cornell/Straight Merger:<br />
*:-run for fundamental + third<br />
*:-run for fundamental + third using magnetized beam<br />
**CSR:<br />
*:-attempt to fix segmentation fault problem<br />
**eCloud:<br />
*:-beginning to benchmark against Shahid's work<br />
*:-run with current parameters<br />
**Meetings:<br />
*:-Cooler<br />
*:-JLEIC<br />
<br><br />
<br />
Yves Roblin:<br />
*Mar. 30 - Apr. 13<br />
**CEBAF:<br />
*:-model team. established a list of tasks to do in near future<br />
*:-model team : presented to BTEAM, discussion about prioritization.<br />
*:-technote writing/data analysis<br />
**JLEIC:<br />
*:-send FOA letter to Manouchehr , setup budget act code .<br />
*:-read papers on multivariate polynomial evaluation (in order to use this for fast calculations of higher order maps in BB3D)<br />
**OTHER:<br />
*:-interview panel for radiation physicist<br />
*:-finalized PERLE optics in ELEGANT (all passes + deceleration)<br />
*:-manager training.<br />
*Apr. 14 - Apr. 27<br />
**JLEIC:<br />
*:-review /adjust xfer line from CEBAF->Ering<br />
*:-prepare for the start of the FOA, plan activities, gather up docs and tools<br />
**CEBAF:<br />
*:-machine support<br />
*:-BTEAM coordination (04/17 and 04/24)<br />
*:-planning/preparing for beam studies (autosteer, bunch length meas, etc..)<br />
<br><br />
<br />
He Zhang:<br />
*Mar. 31 - Apr. 13<br />
**JSPEC Development<br />
*:-JSPEC GUI starts to obtain outside users.<br />
*:-It was reported to us that JSPEC cannot read some MAD-X tfs files provided by Dr. Steck from GSI. I revised the lattice file parser to read these files. A check of the element position is also added to the parser. If the position of one element is the same as that of the previous element, this element will not be saved into the lattice. In this way we avoid redundant elements and redundant calculation for IBS rate. For the tfs file from Dr. Steck, the element number is reduced by 50% after this redundant element check is applied.<br />
*:-It is also reported to us that JSPEC generates NaNs in some simulations. I checked the input file and output file and found that the problem is due to very large product of the time step and the expansion rate, due to which the coordinates of some particle go out of the range of the double floating point number. JSPEC code is revised to prevent this from happening. If a coordinate is less than 1e-60, some computations will not be carried out and the coordinate will not be updated. However, to make the simulation valid in physics, it is necessary to make sure the product of the time step and the expansion rate is not too large.<br />
*:-I am integrating the turn-by-turn model and the RF model to the JSPEC release. This is needed for IMP data experiment and JSPEC benchmarking with the IMP data. This has not been finished.<br />
**JLEIC Cooling Simulation<br />
*:-Simulations were carried out to check what we can achieve without cooling at the cooler for 100 GeV proton beam (44.7 GeV CM energy). I tried to use both round beam and flat beam and assume either the constant proton bunch length with varying momentum spread or both constant proton bunch length and constant vary momentum. The results are summarized in Table 1. If we use a round beam, we see severe reduction of proton beam current without dispersion at the cooler. Using a flat beam helps us, because the charge density increases for a given total charge number and hence the cooling is stronger. For fixed bunch length with varying momentum spread with flat beam cooling, we still see a large reduction of proton current. But if we assume the momentum spread is also constant, there is almost no need to reduce the proton beam current. The flat electron beam provides enough cooling even without dispersion at the cooler. But this means we are able to introduce longitudinal heating to compensate the cooling and maintain the momentum spread. <br />
Table 1. Ion beam current in equilibrium (% of design parameter)<br><br />
Round beam / Flat beam<br> <br />
Fixed bunch length, varying dp/p 40% / 56%<br><br />
Fixed bunch length, fixed dp/p 58% / 98%<br><br />
<br><br />
<br />
----<br />
'''Diagnostic Development - K. Jordan'''<br><br />
Kevin Jordan<br />
*LCLS-II work <br />
**Moved F100 cryomodule to North linac SB<br />
**Moved LCLS-II CM # 5 to LERF vault<br />
**4 Stands have been mounted, surveyed - grouting next<br />
**Wheel extensions arrived as well as a semi full of additional loaner equipment from SLAC<br />
**Cable list for the first 240 cables has been turned over for cable label pricing then cables can be pulled in<br />
*Met w/ Joe & Radiabeam for high power wires scanner <br />
<br><br />
<br />
Mike Tiefenback:<br />
*More work on rayTrace analytical tools and path in preparation for final segment of Spring 2018 run<br />
*Continuing to draft a requirements document and example implementation sketch for a robust background cavity cresting routine able to use data from any of FFB; BEM,BPMs; or SLM based data streams. A specific goal is low execution time.<br />
*Bunch structure diagnostics using 1A SLM (beam studies and tool development with B. Freeman and others) to support increased beam current to Hall C for their experimental needs.<br />
*Other general support for the (extended) Spring 2018 operational run<br />
<br><br />
<br />
Joe Gubeli:<br />
*Most of the last two weeks were devoted to designing a new imager for the Lambertson viewer. Due to the small chamber I had to develop a couple of new analytical models as well as attempt to learn how I can use ZEMAX optimization code to perform the same task not using the thin lens approximation. While the imager optics were not difficult attempting to add an inline illuminator was difficult. This required a few iterations before I ended up with a nice design. Other major tasks performed this week were LCLS-II and Radiabeam CRADA work. For LCLS-II it was several meeting including weekly meetings, and design reviews for cable routing, Cryo can and Cryo. I also worked with S&A giving them floor plate anchor locations and with the new installation team on WGs.<br />
<br />
----<br />
'''LERF - S. Benson'''<br><br />
No report.</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-04-13&diff=7802018-04-132018-04-16T17:49:42Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata'''<br><br />
''No report.'' Acting Accelerator Division Head <br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata'''<br><br />
Todd Satogata<br />
Previous two weeks (Apr 2-Apr 13)<br />
- ADMIN: Eric Thompson thesis input, diss defense (Apr 12, CNU)<br />
- ADMIN: Leadership/group meetings, AWP updates<br />
- IPAC18: Scientific secretariat work (student program, light peer review)<br />
- JLEIC: Followup collaboration meet input, pCDR outline/infrastructure, lunches<br />
- JLEIC: ion dump info to Vasiliy<br />
- ODU: Continue teaching PHYS 417/517 Tue/Thu, Randy advising<br />
- OPS: Hall D TAC runs support, CEBAF reference ops plan input<br />
- OPS: Hall D beam convergence iterations<br />
- OPS: Plan OOC, Beam Studies (Tuesdays), BTeam, optics support/tuning meetings<br />
Next two weeks (Apr 16-Apr 27)<br />
- ADMIN: Eric Thompson final thesis revision input<br />
- ADMIN: Leadership/group meetings, staffing input<br />
- IPAC18: Travel, editing, conference secretariat (Apr 25-May 5)<br />
- JLEIC: Followup collaboration meet input, pCDR outline/infrastructure, lunches<br />
- ODU: Finish teaching PHYS 417/517 Tue/Thu, Continue Randy advising<br />
- OPS: Hall D TAC runs support, CEBAF reference ops plan input<br />
<br />
Alex Bogacz<br />
Previous two weeks (Apr 2-Apr 13)<br />
- IPAC18: Light peer review organization<br />
- PERLE: Lattice to Yves for conversion to elegant, IPAC paper<br />
- LHeC: Parametric studies<br />
- ADMIN: REU student assignments<br />
Next two weeks (Apr 16-Apr 27)<br />
- IPAC18: Light peer review organization<br />
- IPAC18: Poster and paper preparation (PERLE)<br />
- OPS: Arc2 optics refinement<br />
<br />
Rui Li<br />
Previous two weeks (Apr 2-Apr 13)<br />
- JLEIC: Work more on the ion effect in the JLEIC e-ring<br />
- JLEIC: Give the presentation on ion effect in the JLEIC e-ring<br />
at Apr 12 R&D meeting<br />
- IPAC18 Plan and start writing JLEIC Collective Effects paper<br />
- VACATION: Apr 13<br />
Next two weeks (Apr 16-Apr 27)<br />
- VACATION: Apr 16<br />
- IPAC18: Finish JLEIC Collective Effects Paper<br />
- IPAC18: Plan and start writing JLEIC Coupled Bunch Instability paper<br />
- IPAC18: Prepare posters before travel<br />
<br />
Ed Nissen<br />
Previous two weeks (Apr 2-Apr 13)<br />
- JLEIC: Evaluate possibilities for increasing Booster size<br />
- JLEIC: Begin work on retuning, including octupoles to manage<br />
significant amplitude-dependent-detuning seen<br />
- IPAC18: Plan and start writing Booster design paper<br />
Next two weeks (Apr 16-Apr 27)<br />
- JLEIC: Continue DESIREE LDRD preparation, budgeting<br />
- IPAC18: Finish Booster design paper, poster<br />
- JLEIC: Research and add octupoles to booster<br />
<br />
Chris Tennant<br />
Previous two weeks (Apr 2-Apr 13)<br />
- IPAC18: Finish paper and poster, write text for PERLE paper<br />
- JLEIC: trying to get beam through 11 turns of the CCR:<br />
added faux RF cavity to add energy lost to CSR, fix chirp<br />
imposed by CSR wake, added fake collimator to remove head/tail<br />
particles that go to high energy<br />
- JLEIC: thinking through pre-CDR outline and work to be done<br />
Next two weeks (Apr 16-Apr 27)<br />
- PERLE: evaluate mBI gain for 3 passes up (Vlasov-solver)<br />
- PERLE: push a distribution through the system with and without<br />
CSR (elegant lattice from Yves/Alex)<br />
- JLEIC: deep dive on CCR arcs to try and understand why<br />
"simple arc" is so much better at mBI than all the others<br />
we've evaluated<br />
<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
''No report.''<br />
<br />
<br />
----<br />
'''Computational Physics - Y. Roblin'''<br><br />
Kirsten Deitrick:<br />
*Mar. 31 - Apr. 13<br />
**Cornell Straight Merger:<br />
*:-have made 3D field map out of truncated 1D field map for coil pair<br />
*:-run for straight merger experiment<br />
*:-run for extended amplitude<br />
*:-prepping 3D field map of fundamental + third for comparison<br />
**CSR:<br />
*:-combine parameter sweep results, get nominal operating parameters<br />
*:-run CSR+SC+shielding for Chris<br />
*:-attempt to fix segmentation fault problem<br />
**eCloud:<br />
*:-can successfully run PyECLOUD on non-JLab laptop; working to get devl79 install functioning<br />
*:-can now run on devl79; beginning to benchmark against Shahid's work (for reference)<br />
**Impedance:<br />
*:-scheduled next meeting for May 14th at 10<br />
**Meetings:<br />
*:-CASA<br />
*:-Cooler<br />
**Misc:<br />
*:-put in Linac'18 abstracts (invited talk, Straight Merger, Magnetized injector, eCloud)<br />
*:-SL 4/5-4/6, 4/12<br />
*Apr. 14 - Apr. 27<br />
**Magnetized Beam:<br />
*:-fix booster in both options<br />
*:-fix asymmetries in FEL<br />
*:-start scanning for charges/field/spot size<br />
**Cornell/Straight Merger:<br />
*:-run for fundamental + third<br />
*:-run for fundamental + third using magnetized beam<br />
**CSR:<br />
*:-attempt to fix segmentation fault problem<br />
**eCloud:<br />
*:-beginning to benchmark against Shahid's work<br />
*:-run with current parameters<br />
**Meetings:<br />
*:-Cooler<br />
*:-JLEIC<br />
<br><br />
<br />
Yves Roblin:<br />
*Mar. 30 - Apr. 13<br />
**CEBAF:<br />
*:-model team. established a list of tasks to do in near future<br />
*:-model team : presented to BTEAM, discussion about prioritization.<br />
*:-technote writing/data analysis<br />
**JLEIC:<br />
*:-send FOA letter to Manouchehr , setup budget act code .<br />
*:-read papers on multivariate polynomial evaluation (in order to use this for fast calculations of higher order maps in BB3D)<br />
**OTHER:<br />
*:-interview panel for radiation physicist<br />
*:-finalized PERLE optics in ELEGANT (all passes + deceleration)<br />
*:-manager training.<br />
*Apr. 14 - Apr. 27<br />
**JLEIC:<br />
*:-review /adjust xfer line from CEBAF->Ering<br />
*:-prepare for the start of the FOA, plan activities, gather up docs and tools<br />
**CEBAF:<br />
*:-machine support<br />
*:-BTEAM coordination (04/17 and 04/24)<br />
*:-planning/preparing for beam studies (autosteer, bunch length meas, etc..)<br />
<br><br />
<br />
He Zhang:<br />
*Mar. 31 - Apr. 13<br />
**JSPEC Development<br />
*:-JSPEC GUI starts to obtain outside users.<br />
*:-It was reported to us that JSPEC cannot read some MAD-X tfs files provided by Dr. Steck from GSI. I revised the lattice file parser to read these files. A check of the element position is also added to the parser. If the position of one element is the same as that of the previous element, this element will not be saved into the lattice. In this way we avoid redundant elements and redundant calculation for IBS rate. For the tfs file from Dr. Steck, the element number is reduced by 50% after this redundant element check is applied.<br />
*:-It is also reported to us that JSPEC generates NaNs in some simulations. I checked the input file and output file and found that the problem is due to very large product of the time step and the expansion rate, due to which the coordinates of some particle go out of the range of the double floating point number. JSPEC code is revised to prevent this from happening. If a coordinate is less than 1e-60, some computations will not be carried out and the coordinate will not be updated. However, to make the simulation valid in physics, it is necessary to make sure the product of the time step and the expansion rate is not too large.<br />
*:-I am integrating the turn-by-turn model and the RF model to the JSPEC release. This is needed for IMP data experiment and JSPEC benchmarking with the IMP data. This has not been finished.<br />
**JLEIC Cooling Simulation<br />
*:-Simulations were carried out to check what we can achieve without cooling at the cooler for 100 GeV proton beam (44.7 GeV CM energy). I tried to use both round beam and flat beam and assume either the constant proton bunch length with varying momentum spread or both constant proton bunch length and constant vary momentum. The results are summarized in Table 1. If we use a round beam, we see severe reduction of proton beam current without dispersion at the cooler. Using a flat beam helps us, because the charge density increases for a given total charge number and hence the cooling is stronger. For fixed bunch length with varying momentum spread with flat beam cooling, we still see a large reduction of proton current. But if we assume the momentum spread is also constant, there is almost no need to reduce the proton beam current. The flat electron beam provides enough cooling even without dispersion at the cooler. But this means we are able to introduce longitudinal heating to compensate the cooling and maintain the momentum spread. <br />
Table 1. Ion beam current in equilibrium (% of design parameter)<br><br />
Round beam / Flat beam<br> <br />
Fixed bunch length, varying dp/p 40% / 56%<br><br />
Fixed bunch length, fixed dp/p 58% / 98%<br><br />
<br><br />
<br />
----<br />
'''Diagnostic Development - K. Jordan'''<br><br />
''No report.''<br />
<br />
<br />
----<br />
'''LERF - S. Benson'''<br><br />
No report.</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-04-13&diff=7792018-04-132018-04-16T15:06:33Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata'''<br><br />
''No report.'' Acting Accelerator Division Head <br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata'''<br><br />
''No report.''<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
''No report.''<br />
<br />
<br />
----<br />
'''Computational Physics - Y. Roblin'''<br><br />
Kirsten Deitrick:<br />
*Mar. 31 - Apr. 13<br />
**Cornell Straight Merger:<br />
*:-have made 3D field map out of truncated 1D field map for coil pair<br />
*:-run for straight merger experiment<br />
*:-run for extended amplitude<br />
*:-prepping 3D field map of fundamental + third for comparison<br />
**CSR:<br />
*:-combine parameter sweep results, get nominal operating parameters<br />
*:-run CSR+SC+shielding for Chris<br />
*:-attempt to fix segmentation fault problem<br />
**eCloud:<br />
*:-can successfully run PyECLOUD on non-JLab laptop; working to get devl79 install functioning<br />
*:-can now run on devl79; beginning to benchmark against Shahid's work (for reference)<br />
**Impedance:<br />
*:-scheduled next meeting for May 14th at 10<br />
**Meetings:<br />
*:-CASA<br />
*:-Cooler<br />
**Misc:<br />
*:-put in Linac'18 abstracts (invited talk, Straight Merger, Magnetized injector, eCloud)<br />
*:-SL 4/5-4/6, 4/12<br />
*Apr. 14 - Apr. 27<br />
**Magnetized Beam:<br />
*:-fix booster in both options<br />
*:-fix asymmetries in FEL<br />
*:-start scanning for charges/field/spot size<br />
**Cornell/Straight Merger:<br />
*:-run for fundamental + third<br />
*:-run for fundamental + third using magnetized beam<br />
**CSR:<br />
*:-attempt to fix segmentation fault problem<br />
**eCloud:<br />
*:-beginning to benchmark against Shahid's work<br />
*:-run with current parameters<br />
**Meetings:<br />
*:-Cooler<br />
*:-JLEIC<br />
<br><br />
<br />
Yves Roblin:<br />
*Mar. 30 - Apr. 13<br />
**CEBAF:<br />
*:-model team. established a list of tasks to do in near future<br />
*:-model team : presented to BTEAM, discussion about prioritization.<br />
*:-technote writing/data analysis<br />
**JLEIC:<br />
*:-send FOA letter to Manouchehr , setup budget act code .<br />
*:-read papers on multivariate polynomial evaluation (in order to use this for fast calculations of higher order maps in BB3D)<br />
**OTHER:<br />
*:-interview panel for radiation physicist<br />
*:-finalized PERLE optics in ELEGANT (all passes + deceleration)<br />
*:-manager training.<br />
*Apr. 14 - Apr. 27<br />
**JLEIC:<br />
*:-review /adjust xfer line from CEBAF->Ering<br />
*:-prepare for the start of the FOA, plan activities, gather up docs and tools<br />
**CEBAF:<br />
*:-machine support<br />
*:-BTEAM coordination (04/17 and 04/24)<br />
*:-planning/preparing for beam studies (autosteer, bunch length meas, etc..)<br />
<br><br />
<br />
He Zhang:<br />
*Mar. 31 - Apr. 13<br />
**JSPEC Development<br />
*:-JSPEC GUI starts to obtain outside users.<br />
*:-It was reported to us that JSPEC cannot read some MAD-X tfs files provided by Dr. Steck from GSI. I revised the lattice file parser to read these files. A check of the element position is also added to the parser. If the position of one element is the same as that of the previous element, this element will not be saved into the lattice. In this way we avoid redundant elements and redundant calculation for IBS rate. For the tfs file from Dr. Steck, the element number is reduced by 50% after this redundant element check is applied.<br />
*:-It is also reported to us that JSPEC generates NaNs in some simulations. I checked the input file and output file and found that the problem is due to very large product of the time step and the expansion rate, due to which the coordinates of some particle go out of the range of the double floating point number. JSPEC code is revised to prevent this from happening. If a coordinate is less than 1e-60, some computations will not be carried out and the coordinate will not be updated. However, to make the simulation valid in physics, it is necessary to make sure the product of the time step and the expansion rate is not too large.<br />
*:-I am integrating the turn-by-turn model and the RF model to the JSPEC release. This is needed for IMP data experiment and JSPEC benchmarking with the IMP data. This has not been finished.<br />
**JLEIC Cooling Simulation<br />
*:-Simulations were carried out to check what we can achieve without cooling at the cooler for 100 GeV proton beam (44.7 GeV CM energy). I tried to use both round beam and flat beam and assume either the constant proton bunch length with varying momentum spread or both constant proton bunch length and constant vary momentum. The results are summarized in Table 1. If we use a round beam, we see severe reduction of proton beam current without dispersion at the cooler. Using a flat beam helps us, because the charge density increases for a given total charge number and hence the cooling is stronger. For fixed bunch length with varying momentum spread with flat beam cooling, we still see a large reduction of proton current. But if we assume the momentum spread is also constant, there is almost no need to reduce the proton beam current. The flat electron beam provides enough cooling even without dispersion at the cooler. But this means we are able to introduce longitudinal heating to compensate the cooling and maintain the momentum spread. <br />
Table 1. Ion beam current in equilibrium (% of design parameter)<br><br />
Round beam / Flat beam<br> <br />
Fixed bunch length, varying dp/p 40% / 56%<br><br />
Fixed bunch length, fixed dp/p 58% / 98%<br><br />
<br><br />
<br />
----<br />
'''Diagnostic Development - K. Jordan'''<br><br />
''No report.''<br />
<br />
<br />
----<br />
'''LERF - S. Benson'''<br><br />
No report.</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-04-13&diff=7782018-04-132018-04-16T14:59:25Z<p>Anichols: Created page with "'''Director - M. Spata'''<br> ''No report.'' Acting Accelerator Division Head ---- '''Accelerator Physics - T. Satogata'''<br> ''No report.'' ---- '''Accelerator R &amp;..."</p>
<hr />
<div>'''Director - M. Spata'''<br><br />
''No report.'' Acting Accelerator Division Head <br />
<br />
<br />
----<br />
'''Accelerator Physics - T. Satogata'''<br><br />
''No report.''<br />
<br />
<br />
----<br />
'''Accelerator R &amp; D - Y. Zhang'''<br><br />
''No report.''<br />
<br />
<br />
----<br />
'''Computational Physics - Y. Roblin'''<br><br />
Kirsten Deitrick:<br />
*Mar. 31 - Apr. 13<br />
**Cornell Straight Merger:<br />
*:-have made 3D field map out of truncated 1D field map for coil pair<br />
*:-run for straight merger experiment<br />
*:-run for extended amplitude<br />
*:-prepping 3D field map of fundamental + third for comparison<br />
**CSR:<br />
*:-combine parameter sweep results, get nominal operating parameters<br />
*:-run CSR+SC+shielding for Chris<br />
*:-attempt to fix segmentation fault problem<br />
**eCloud:<br />
*:-can successfully run PyECLOUD on non-JLab laptop; working to get devl79 install functioning<br />
*:-can now run on devl79; beginning to benchmark against Shahid's work (for reference)<br />
**Impedance:<br />
*:-scheduled next meeting for May 14th at 10<br />
**Meetings:<br />
*:-CASA<br />
*:-Cooler<br />
**Misc:<br />
*:-put in Linac'18 abstracts (invited talk, Straight Merger, Magnetized injector, eCloud)<br />
*:-SL 4/5-4/6, 4/12<br />
*Apr. 14 - Apr. 27<br />
**Magnetized Beam:<br />
*:-fix booster in both options<br />
*:-fix asymmetries in FEL<br />
*:-start scanning for charges/field/spot size<br />
**Cornell/Straight Merger:<br />
*:-run for fundamental + third<br />
*:-run for fundamental + third using magnetized beam<br />
**CSR:<br />
*:-attempt to fix segmentation fault problem<br />
**eCloud:<br />
*:-beginning to benchmark against Shahid's work<br />
*:-run with current parameters<br />
**Meetings:<br />
*:-Cooler<br />
*:-JLEIC<br />
<br><br />
<br />
Yves Roblin:<br />
*Mar. 30 - Apr. 13<br />
**CEBAF:<br />
*:-model team. established a list of tasks to do in near future<br />
*:-model team : presented to BTEAM, discussion about prioritization.<br />
*:-technote writing/data analysis<br />
**JLEIC:<br />
*:-send FOA letter to Manouchehr , setup budget act code .<br />
*:-read papers on multivariate polynomial evaluation (in order to use this for fast calculations of higher order maps in BB3D)<br />
**OTHER:<br />
*:-interview panel for radiation physicist<br />
*:-finalized PERLE optics in ELEGANT (all passes + deceleration)<br />
*:-manager training.<br />
*Apr. 14 - Apr. 27<br />
**JLEIC:<br />
*:-review /adjust xfer line from CEBAF->Ering<br />
*:-prepare for the start of the FOA, plan activities, gather up docs and tools<br />
**CEBAF:<br />
*:-machine support<br />
*:-BTEAM coordination (04/17 and 04/24)<br />
*:-planning/preparing for beam studies (autosteer, bunch length meas, etc..)<br />
<br><br />
<br />
He Zhang:<br />
*Mar. 31 - Apr. 13<br />
**JSPEC Development<br />
*:-JSPEC GUI starts to obtain outside users.<br />
It was reported to us that JSPEC cannot read some MAD-X tfs files provided by Dr. Steck from GSI. I revised the lattice file parser to read these files. A check of the element position is also added to the parser. If the position of one element is the same as that of the previous element, this element will not be saved into the lattice. In this way we avoid redundant elements and redundant calculation for IBS rate. For the tfs file from Dr. Steck, the element number is reduced by 50% after this redundant element check is applied.<br />
*:-It is also reported to us that JSPEC generates NaNs in some simulations. I checked the input file and output file and found that the problem is due to very large product of the time step and the expansion rate, due to which the coordinates of some particle go out of the range of the double floating point number. JSPEC code is revised to prevent this from happening. If a coordinate is less than 1e-60, some computations will not be carried out and the coordinate will not be updated. However, to make the simulation valid in physics, it is necessary to make sure the product of the time step and the expansion rate is not too large.<br />
*:-I am integrating the turn-by-turn model and the RF model to the JSPEC release. This is needed for IMP data experiment and JSPEC benchmarking with the IMP data. This has not been finished.<br />
**JLEIC Cooling Simulation<br />
*:-Simulations were carried out to check what we can achieve without cooling at the cooler for 100 GeV proton beam (44.7 GeV CM energy). I tried to use both round beam and flat beam and assume either the constant proton bunch length with varying momentum spread or both constant proton bunch length and constant vary momentum. The results are summarized in Table 1. If we use a round beam, we see severe reduction of proton beam current without dispersion at the cooler. Using a flat beam helps us, because the charge density increases for a given total charge number and hence the cooling is stronger. For fixed bunch length with varying momentum spread with flat beam cooling, we still see a large reduction of proton current. But if we assume the momentum spread is also constant, there is almost no need to reduce the proton beam current. The flat electron beam provides enough cooling even without dispersion at the cooler. But this means we are able to introduce longitudinal heating to compensate the cooling and maintain the momentum spread. <br />
Table 1. Ion beam current in equilibrium (% of design parameter)<br />
<br />
<br />
<br />
Round beam<br />
<br />
<br />
<br />
Flat beam<br />
Fixed bunch length, varying dp/p<br />
<br />
<br />
<br />
40%<br />
<br />
<br />
<br />
56%<br />
Fixed bunch length, fixed dp/p<br />
<br />
<br />
<br />
58%<br />
<br />
<br />
<br />
98%<br />
<br />
<br />
<br />
<br />
<br />
<br />
----<br />
'''Diagnostic Development - K. Jordan'''<br><br />
''No report.''<br />
<br />
<br />
----<br />
'''LERF - S. Benson'''<br><br />
No report.</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018&diff=77720182018-04-16T14:34:56Z<p>Anichols: </p>
<hr />
<div><br />
[[2018-04-13]]<br><br />
[[2018-03-30]]<br><br />
[[2018-03-16]]<br><br />
[[2018-03-02]]<br><br />
[[2018-02-16]]<br><br />
[[2018-02-02]]<br><br />
[[2018-01-22]]<br></div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-03-30&diff=7762018-03-302018-04-03T18:37:54Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata'''<br><br />
''No report.'' Acting Accelerator Division Head<br><br />
<br><br />
----<br />
'''Accelerator Physics - T. Satogata''' <br><br />
''No report.''<br><br />
<br><br />
----<br />
'''Accelerator R and D - Y. Zhang'''<br> <br />
Fanglei Lin<br />
*Continued single particle nonlinear dynamics study for the electron ring.<br />
*Prepared and presented a talk at the JLEIC spring collaboration meeting.<br />
*Investigating JLEIC collider rings’ geometry to fit in the Jlab site.<br />
*Miscellaneous: attended JLEIC general meeting.<br />
<br><br />
Vasiliy Morozov<br />
*Mar 17 - Mar 30<br />
**Preparation for and participation in the JLEIC collaboration meeting<br />
**Work on a new version of the ion collider ring design<br />
**Polarization: teleconference with Anatoliy's group and discussion of an optimized electron spin rotator<br />
**Revising the scopes and budgets of both funded and unfunded FOA proposals<br />
**Detector design: work on the ion orbit correction scheme<br />
**Geometry tagging LDRD: teleconference with collaborators<br />
*Mar 31 - Apr 13<br />
**Reducing the collider ring circumference<br />
**Preparation of two talks for DIS'18<br />
**Preparation of two papers for IPAC'18<br />
<br><br />
Amy Sy<br />
*Set up WARP simulation environment to model two counter-propagating magnetized beams; considering the effect of one interaction between the beams at some point along the accelerating path, but not necessarily in an accelerating field. Implementing diagnostics to track particles that cross specified longitudinal planes to evaluate emittance growth. Setting up proper simulation weights and collision operators. Discussions with Slava on compensation of transverse kick applied to the accelerating beam by setting proper phase of a second kick, such that the induced Larmor rotations cancel out.<br />
*Worked with S. Wang to contribute slides on transverse feedback systems relevant to the ion ring for his talk on feedback system requirements at the JLEIC Spring 2018 Collaboration Meeting.**Participated in the JLEIC Spring 2018 Collaboration Meeting.<br />
*Reviewed polarized ion source requirements and resonant charge-exchange ionization for a discussion on a possible LDRD proposal on a laser driven polarized D- source for JLEIC.<br />
<br><br />
Guohui Wei<br />
*Prepared report of "Dynamic Aperture and Detector Solenoid Compensation" for the JLEIC Collaboration Meeting Spring 2018. And presented it on Tuesday, 27 March 2018<br />
*LDRD study of the geometry tagging after the collision. An alternative method to measuring the evaporation neutrons is to detect the residual nucleus. Measuring its magnetic rigidity (~ A/Z), is straightforward as it changes substantially for nuclei that evaporate many neutrons. Detection extremely close to the beam is not needed.<br />
*I continue to study the decoupling in IR of ion collider ring with nested skew quads in upstream triplet. an effect analogous to quadrupole rotation can be dynamically produced by appropriately combining a normal quadrupole component (strength: kn) and a skew component (strength: ks).<br />
<br><br />
Yuhong Zhang<br />
*Organized the JLEIC collaboration meeting, gave 3 talks<br />
*Gave a presentation in JLEIC general meeting<br />
*Attended cooling experiment teleconference<br />
*Prepared slides for an invited talk at APS meeting<br />
*Explored a LDRD for small aperture magnets for JLEIC<br />
<br><br />
<br />
----<br />
'''Computational Physics - Y. Roblin'''<br> <br />
Kirsten Deitrick<br />
*Mar 17 - Mar 30<br />
**Magnetized Beam:<br />
*:-Continue to struggle with buncher (have fixed, mostly)<br />
*:-Collaboration presentation<br />
**Cornell Straight Merger:<br />
*:-finish running additional simulations<br />
*:-experiment pushed back until 2nd week of May<br />
*:-Collaboration presentation<br />
*:-weird behavior (unexpected focusing) due to coils, waiting for better field map from George<br />
*:-weird behavior caused by field irregularities (coils insufficiently separated)<br />
**CSR:<br />
*:-found KEK works for right parameters (distribution changing in tails)<br />
*:-parameter sweep for KEK CSR element<br />
**eCloud:<br />
*:-have installed PyECLOUD on devl79 (errors at runtime, debugging)<br />
*:-going through PyECLOUD reference manual<br />
*:-have applied for NERSC allocation (ERCAP thing finally got fixed)<br />
*:-currently looking at other codes (CMAD, ORBIT, CLOUDLAND, VORPAL, POSINST @ FermiLab ...)<br />
**Impedance:<br />
*:-meeting (presentation on current estimates)<br />
**Meetings:<br />
*:-Cooler<br />
*:-JLEIC Collaboration (presentation on Beam Tests for Electron Cooler)<br />
**Misc:<br />
*:-updated GPT on devl79<br />
*Mar 31 - Apr 13<br />
**Magnetized Beam:<br />
*:-finish buncher fix, optimize to fix FEL asymmetries<br />
*:-start scan of solenoid strength/spot size to place before existing injector<br />
**Cornell Straight Merger:<br />
*:-make 3-D field map of coils<br />
*:-rerun simulations<br />
**CSR:<br />
*:-continue parameter sweeps<br />
*:-run what Chris needs for IPAC paper<br />
**eCloud:<br />
*:-find working code or fix PyECLOUD<br />
*:-nag Jean-Luc (WARP+POSINST), M. Furman (POSINST)<br />
*:-follow up on NERSC allocation application<br />
**Impedance:<br />
*:-schedule next meeting<br />
**Meetings:<br />
*:-Cooler<br />
*:-JLEIC<br />
<br><br />
<br />
Yves Roblin<br />
*Mar 17 - Mar 30<br />
**CEBAF/JLAB:<br />
*:-Prepared slide for A. Boenhlein for ADP report<br />
*:-Parameter table studies. Attended meetings, simulated hall a configurations. Finalized table<br />
*:-Updated Dennis T. job description<br />
*:-Support/setup of CEBAF for restart<br />
*:-Technote writing/analysis<br />
*:-TRC committee meetings<br />
**JLEIC:<br />
*:-Prepared talks for the JLEIC collaboration, delivered talks.<br />
*:-Met with collaborators, wrote milestones for the FOA, submitted report to DOE.<br />
**Vacation: Mar 29, Mar 30<br />
*Mar 31 - Apr 13<br />
**Interview panels for Rad Physicist position<br />
**Beam studies/machine restart for CEBAF<br />
**Organizing FOA (setting up budget, acct code, etc..)<br />
**Reading articles on multivariate polynoms evaluation schemes<br />
**Management training.<br />
<br><br />
<br />
He Zhang<br />
*Mar 17 - Mar 30<br />
**JSPEC Development - A hollow beam model is added for both coasting and bunched electron beam. As Slava suggested, putting the electron beam at the edge of the ion bunch may provide larger friction force. This is true for a single ion. But, if we consider the whole bunch, it also means less ions see the electrons. I need to do some simulations with the hollow electron beam to check what we can achieve. Fixed a few bugs reported by Paul at Radiasoft.<br />
**Extend the tpsa code - This is considered done for now. I have cleaned up the code, added doxygen comments, and written cmake files to generate static and shared library. I also compared the new code with the original code and see an improvements of efficiency. A brief introduction about the changes and how to use the code is written. Although I think the efficiency can be further improved, but there is no urgent need for it. Besides being used in the kernel-independent FMM, the code can be used in other codes we are developing. For example, in GHOST, the users need to provide both the transfer map and the ODE of the generating function. The latter one may be not very straightforward for the users. Actually, it can be generated from the transfer map using some differential algebra based algorithm. With the help of the tpsa code, we should be able to re-do the DA algorithm and generate the ODE. Then the transfer map will be the only input needed for GHOST.<br />
**JLEIC Cooling Simulation - Did some simulation with 1.6 nC/bunch electron beam as Steve suggests. As expected, the difficulty is still the imbalance of the IBS in different directions. Longitudinal cooling is still too strong. If we reduce the proton beam current, we can find an equilibrium state. However, some cooling is wasted. Assuming the proton bunch length constant is helpful. But I think we should/could be able to improve it.<br />
**Others - Reviewed two papers. (Only one paper left. Not accept more reviews before we finish pCDR report.)<br />
*Mar 31 - Apr 13<br />
**Finish the draft on cooling simulation for JLEIC baseline design. (This is needed for both IPAC and pCDR)<br />
**Do some simulations on cooling with dispersion and write down the result together with Slava. (This is also needed for both IPAC and pCDR)<br />
**Add turn-by-turn cooling simulation and an RF model to JSPEC and do some simulations for IMP experiment. (Haipeng needs it.)<br />
**The last review is due.<br />
<br><br />
----<br />
'''Diagnostic Development - K. Jordan'''<br><br />
Kevin Jordan<br />
*Bereavement Leave: Mar 19-21<br />
*Vacation: Mar 22-23<br />
*Working on final version of cable database for LCLS-II installation, hope to start pulling cables next week<br />
*Preparing for shipment of a truck load of equipment from SLAC<br />
*Working with installation crew to move 2 cryomodules from LERF vault to CEBAF & place CM #5 LCLS-II module in the LERF vault<br />
<br><br />
<br />
Joe Gubeli<br />
*Worked on AH Kicker Coils<br />
*Reviewed and approved the LCLS-II Cleanroom<br />
*Worked on the upgraded imager for the Lambertson viewer.<br />
<br><br />
<br />
Mike Tiefenback<br />
*Wire Scanner System requirements update to guide overhaul of that system broadly targeting all of: maintenance, data structures, analytical tools<br />
*Continue work on rayTrace analytical tools and path in preparation for final segment of Spring 2018 run plus generating a requirements document and example implementation sketch for a robust background cavity cresting routine which can work w/ or w/o FFB, integrated with BEM,BPMs, and SLM based data streams.<br />
*General support for (extended) Spring 2018 operational run<br />
*Sketching application benefits for potential SLM in accelerator common 1R06/2R06 dipoles and wire scanners for <n>R10 quadrupole locations, as input for cost/benefit assessment. Goal would be to provide envelope measurement for re-injected beam into linacs and monitoring re-injection steering.<br />
<br><br />
----<br />
'''LERF - S. Benson'''<br><br />
*March 19-30<br />
**Prepared and presented three talks at the Collaboration meeting<br />
**Attended the collaboration meeting.<br />
**Made some good progress in deriving the specifications for the cooler ring solenoid <br />
**Started to go over the details of the CeC micro bunching proposal that was funded. <br />
**Had some discussions with P. Evtushenko about HZDR upgrade.<br />
**Worked out some property issue for G Biallas and D. Douglas to make sure their property was properly transferred.<br />
<br />
*April 2-13<br />
**Prepare for and attend the FACET II Director's review at SLAC April 10-11.<br />
**Continue to derive the specifications for the Cooler ring solenoid.<br />
**Host Cooler ring meeting on April 4th.<br />
**Lay out the cooler ring section of the preCDR in more detail. Decide on near term tasks.</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-03-16&diff=7752018-03-162018-04-02T20:30:36Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata'''<br><br />
''No report.''<br />
<br><br />
<br />
----<br />
'''Accelerator Physics - T. Satogata'''<br><br />
Todd Satogata<br />
Previous two weeks (Mar 5-Mar 16)<br />
- SICK: Fri Mar 9<br />
- ADMIN: Leadership/group meetings, Lab Plan update, Drupal training, appraisal<br />
- JLEIC: Coordinate lattice freeze, organization of next steps<br />
- JLEIC: Work with Yuhong to develop collaboration meet program<br />
- IPAC18: Scientific secretariat work (program codes, booklets, student program)<br />
- ODU: Continue teaching PHYS 417/517 Tue/Thu, Randy advising<br />
- OPS: Plan OOC, Beam Studies (Tuesdays), BTeam, optics support/tuning meetings<br />
- OPS: Hall D active collimator calibration planning, 12 GeV parameter meeting<br />
Next two weeks (Mar 19-Mar 30)<br />
- ADMIN: Leadership/group meetings, cancer therapy brainstorming meet<br />
- ADMIN: Dave Douglas retirement lunch org (Mar 30)<br />
- JLEIC: Prepare collaboration meeting talks, templates for speakers<br />
- JLEIC: Collaboration Meeting (Mar 26-28), Impedance meeting (Mar 19)<br />
- IPAC18: Scientific secretariat work (poster codes, booklets, student program)<br />
- ODU: Continue teaching PHYS 417/517 Tue/Thu, Randy advising<br />
- ODU: Potential graduate student visit (Fri Mar 23)<br />
- OPS: Plan OOC, Beam Studies (Tuesdays), BTeam, optics support/tuning meetings<br />
- OPS: 12 GeV parameter document convergence input<br />
<br />
Alex Bogacz<br />
Previous two weeks (Mar 5-Mar 16)<br />
- 12 GeV Beam Parameter Table<br />
- REU candidates selection<br />
- M56 control revisited<br />
Next two weeks (Mar 19-Mar 30)<br />
- IPAC'18 Peer Rev.<br />
- 12 GeV Beam Requirements<br />
- Tech Transfer Workshop<br />
- JLEIC: Collaboration Meeting (March 26-28)<br />
<br />
David Douglas<br />
Previous two weeks (Mar 5-Mar 16)<br />
- Finished up "Why PERLE" note requested by Max Klein<br />
- Generated better-optimized "Faux FFAG" arc with ideal solution iterating<br />
between spreadsheet and DIMAD<br />
- Revised CCR matching, to Chris for CCR multiturn model<br />
Next two weeks (Mar 19-Mar 30)<br />
- Iterate Faux FFG arc with thin quad fringe fields<br />
- Updating ERL/CCR matching, adjust working point of CCR<br />
- Work with Chris to followup on Cheng-Ying's uBI gain suggestions<br />
- JLEIC: Collaboration Meeting (Mar 26-28)<br />
- Retirement process!<br />
<br />
Rui Li<br />
Previous two weeks (Mar 5-Mar 16)<br />
- JLEIC: Evaluate ion trapping in e-ring, clearing gap evaluation, with<br />
concerns appearing for fast-ion instability at 3 and 5 GeV<br />
- JLEIC: Contact Demin Zhou re IR bellow design, coordinate with Wiseman<br />
Next two weeks (Mar 19-Mar 30)<br />
- JLEIC: Summarize estimates for collective effects, prepare talk for<br />
collaboration meeting<br />
- JLEIC: Collaboration Meeting (Mar 26-28), Impedance meeting (Mar 19)<br />
- Start writing papers for IPAC18<br />
<br />
Ed Nissen<br />
Previous two weeks (Mar 5-Mar 16)<br />
- VACATION: Mon Mar 5, SICK: 1/2 Tue Mar 6, Wed Mar 7<br />
- JLEIC: DESIREE gear changing tests LDRD LOI preparation<br />
- JLEIC: Finish booster cleanup, working point, ramping development<br />
- JLEIC: Retune booster to reduce overall sextupole strengths<br />
Next two weeks (Mar 19-Mar 30)<br />
- JLEIC: Continue DESIREE LDRD preparation, budgeting<br />
- JLEIC: Prepare talk for collaboration meeting<br />
- JLEIC: Collaboration Meeting (Mar 26-28)<br />
<br />
Chris Tennant<br />
Previous two weeks (Mar 5-Mar 16)<br />
- JLEIC: revisiting some mBI analysis for one of the CCR arcs<br />
(found a numerical artifact that for certain values of the<br />
mesh_number, where the gain is orders of magnitude larger)<br />
- JLEIC: increasing fidelity of CCR S2E lattice - namely, adding the<br />
kickers in the beam exchange region and trying to wrap my head<br />
around how it works<br />
- JLEIC: able to get good agreement - with CSR - between elegant and GPT<br />
for the "simple arc" lattice<br />
- IPAC18: foreign travel training!<br />
Next two weeks (Mar 19-Mar 30)<br />
- JLEIC: Prepare talk for collaboration meeting<br />
- JLEIC: Collaboration Meeting (Mar 26-28)<br />
- IPAC18: prep (paper and poster)<br />
<br />
Randy Gamage<br />
Previous two weeks (Mar 5-Mar 16)<br />
- Dissertation writing: Working on bunch splitting chapter<br />
Next two weeks (Mar 19-Mar 30)<br />
- Dissertation writing: Revise bunch compressor chapter<br />
- Dissertation writing: Continue bunch splitting chapter<br />
- JLEIC: Meet with Rui Li, get ideas on esme instability tests<br />
<br />
----<br />
'''Accelerator R and D - Y. Zhang''' <br><br />
Slava Derebenev<br />
*Continued development of advanced concepts for JLEIC high energy cooler<br />
<br><br />
<br />
Fanglei Lin<br />
*Finished the electron collider ring design and presented in the JLEIC R&D meeting.<br />
*Performed tune scan and continued misalignment study for the electron ring.<br />
*Continued setting up spin tracking in the BMAD using the latest electron ring design.<br />
*Miscellaneous: attended discussion of IP magnets with engineers, attended the JLEIC R&D meetings, attended JLEIC detector meeting, attended JLEIC general meetings.<br />
<br><br />
<br />
Vasiliy Morozov<br />
*Ion collider ring design: development of a new design version geometrically matched to the electron collider ring and including various updates.<br />
*Interaction region design: meetings with engineers and detector designers.<br />
*Geometry tagging LDRD: teleconferences with collaborators.<br />
<br><br />
<br />
Amy Sy<br />
*Compiling recent toroidal merger simulation results and methods for presentation at IPAC 2018.<br />
*Set up WARP simulation environment to model two counter-propagating magnetized beams in an accelerating field. Magnetized beam is generated using a flat beam transform, and the two beams currently interact only once in the "linac". Currently setting up diagnostics to evaluate emittance growth.<br />
*Survey of transverse feedback systems: for hadron machines especially, existing systems tend to be much more narrowband than is required for mitigating the coupled bunch instability for JLEIC. J-PARC Main Ring feedback system for intrabunch feedback looks promising, with a bandwidth about half of the JLEIC requirement, and is currently limited by the power amplifier.<br />
*Working with S. Wang to contribute transverse feedback system requirements to the JLEIC Collaboration Meeting talk on feedback systems.<br />
<br><br />
<br />
Guohui Wei<br />
*I find a tune different between MADX and ELEGANT with detector solenoid effect. After discussing with the host of ELEGANT CODE, Michael Borland, we find the tune and twiss parameters are not correct in a ELEGANT output from a ring lattice with a coupling section. And Michael Borland agree to make an upgrade on ELEGANT in 1-2 weeks for the JLEIC lattice simulation.<br />
*LDRD study of the geometry tagging after the collision. I study the multiplicities of n, p, d and alfa after the collision of e+208Pb at 10 x 40 GeV. Meanwhile, A,Z,p, and alfa of final state are also statistic in their multiplicities. Those two analysis are contracted with A and detected neutron at ZDC.<br />
*I also study the decoupling in IR of ion collider ring with nested skew quads in upstream triplet. Those result have been discussed with Renuka and Mike in BP meeting.<br />
<br><br />
<br />
Yuhong Zhang<br />
*Completed a program for the JLEIC collaboration meeting<br />
*Started preparation of slides for the collaboration meeting<br />
*Attended telecon for bunched beam cooling, and discussed and prepared a plan<br />
*Explored LDRD for JLEIC including small aperture magnets for high energy upgrade of the JLEIC ion collider ring<br />
*Attended various meetings<br />
<br><br />
<br />
----<br />
'''Computational Physics - Y. Roblin'''<br><br />
<br />
Kirsten Deitrick<br />
*Mar 3 - Mar 16<br />
**Cornell Straight Merger:<br />
*:-finish running additional simulations<br />
**CSR:<br />
*:-debugging KEK custom element on the cluster (it works locally with GPT 2.x)<br />
*:-finish implementing custom KEK element fix<br />
*:-present comparison of KEK CSR in Cooling meeting<br />
*:-KEK element deemed unphysical and GPT doesn't contain shielding - future work done in Bmad by Chris<br />
**eCloud:<br />
*:-remind Jean-Luc Vay about Warp+POSINST scripts<br />
*:-remind Miguel Furman about POSINST<br />
*:-NERSC account troubleshooting<br />
*:-reread previous tune shift estimate for MEIC<br />
**Impedance:<br />
*:-ion ring estimate using LHC values<br />
*:-PEP-X values<br />
*:-edit KEKB, SuperKEKB values<br />
*:-estimates of both rings<br />
*:-created impedance wiki<br />
**Meetings:<br />
*:-Cooler (x2, KEK CSR presentation)<br />
*:-JLEIC (x2)<br />
**Misc:<br />
*:-NERSC finally got back to me - they still have significant problems with new account creation<br />
<br />
*Mar 17 - Mar 30<br />
**Magnetized Beam:<br />
*:-finish fixing injector using FEL booster<br />
*:-existing Penner bend merger<br />
*:-prep for JLEIC Collaboration meeting<br />
**Cornell Straight Merger:<br />
*:-finish running additional simulations<br />
*:-summarize expected results/calibration settings for everyone else involved<br />
*:-keep an eye on coil production<br />
**eCloud:<br />
*:-install PyECLOUD<br />
*:-start estimates for different SEY values using current ion beam parameters<br />
*:-nag Jean-Luc Vay (Warp+POSINST), M. Furman (POSINST), NERSC (account creation failure)<br />
**Impedance:<br />
*:-meeting (present on current estimates of both rings and CCR)<br />
**Meetings:<br />
*:-Cooler<br />
*:-JLEIC<br />
*:-Impedance<br />
*:-JLEIC Collaboration<br />
*:-Cornell trip<br />
**Misc:<br />
*:-submit LINAC 2018 abstracts for eCloud, magnetized LERF injector/mergers (300 pC maximum), compact ICLS (the invited talk)<br />
<br><br />
<br />
Yves Roblin<br />
*CEBAF <br />
**write technote on raytrace analysis<br />
**Prepare for D. turner to be matrixed during the summer<br />
**Review optics from CEBAF, slight dispersion leakage in vertical<br />
*JLEIC<br />
**Carrying out simulations at NESRC for bbeam in the context of the FOA<br />
**Preparing for upcoming coll. Meeting.<br />
<br><br />
<br />
He Zhang<br />
*Mar 3 - Mar 16<br />
**JSPEC Development - Read a few references to understand how the electron beam space charge model is derived. Basically, there are two effects due to the space charge field. Firstly, the potential changes within the electron bunch along with the distance to the axis, which results in a change of longitudinal velocity. Second, under the effects of both the electric field caused by the space charge and the external magnetic field, electrons starts to rotate around the magnetic field line with a drift velocity. Both effects will change the ion velocity with respect to the electrons. The second effect also leads to an increase of the electron temperature. The code to calculate both effects for DC electron beam has been finished. It is under development for Gaussian beam.<br />
**Extend the tpsa code - Lingyun’s tpsa code is used in my fmm code for arbitrary kernel function. This code has been revised for better performance and additional function, so that we can perform some differential algebra work without using COSY Infinity. Firstly, the memory management was changed. It was changed once before for FMM usage, by allocating the memory pool for all DA vectors at the beginning instead of allocating for each DA vector when they are used for the first time. This approach significantly increased the efficiency. But in that application, the user has to manually clean the pool, otherwise the pool will be full soon and the calculation cannot continued. This is inconvenient. Now the memory pool is controlled by a linked list, which records the available memory for new DA vectors. The linked list is upgraded automatically each time when a DA vector is created or deleted. In this way, the user will never need to worry about the memory pool as long as the pool size is not too small. The efficiency of this approach is a little worse than the one in FMM, due to the operations on the linked list, but still much better than the original way. Secondly, a few functions are revised for better performance and a few functions are added, e.g. calculating an arbitrary power of a DA vector. Thirdly, the ultimate purpose is to calculate the composition of two groups of DA vectors, which is essential for DA based algorithms. The original tpsa code has this function, but it was implemented in a very naïve way with bad efficiency. A group of functions have been added, including subscribing one base in a DA vector by a real number, subscribing one base in a DA vector by a DA vector, subscribing all bases in a DA vector by a group of DA vectors, composition of two groups of DA vectors, composition of a group of DA vectors with a group of real numbers (tracking with a DA map). Finally, a wrapper is added with overloaded operators, so that one can use the DA vectors as basic data types. The development is almost done. Most functions have been finished and tested with COSY Infinity. I need to test two more functions and document the code.<br />
**Update on the kernel independent FMM - Updated the DA package used in the kernel independent FMM code by adding moving constructor and revising the operator overloading. The efficiency was improved for about 3%. Now I think the code is good enough for demonstrating the idea. I will start generating data and preparing a paper on it.<br />
**Others - Reviewed four papers.<br />
*Mar 17 - Mar 30<br />
**Cooling parameters were changed slightly as I was notified. I will do some simulation with the new parameters for the coming collaboration meeting.<br />
**Prepare for my talk in the collaboration meeting.<br />
**Revise the FMM paper.<br />
**Review two more papers. (I feel the reviews took too much time. I’m going to control the number of papers below two per month, after I finish those at ha <br />
<br><br />
<br />
----<br />
'''Diagnostic Development - K. Jordan'''<br><br />
''No report.''<br />
<br><br />
<br />
<br />
----<br />
'''LERF - S. Benson''' <br><br />
*March 5-16<br />
**Finished preparing two talks for JLEIC collaboration meeting, partially complete with a third.<br />
**Updated GTS laser training course materials and derived a new course for non-laser users<br />
**Hosted cooler ring meetings on March 7, and 14 and wrote up minutes<br />
**Numerology tech note awaiting input from Jiquan <br />
**Made some progress in deriving solenoid specifications for Cooler. Trying to understand how to extrapolate.<br />
**Completed MED01, Rad worker I, and Safety Observation training<br />
**Looked at THz FEL specifications for HZDR. <br />
**Assisted Michelle Shinn in clearing out boxes from the LERF and recovering files from her old computers.<br />
*March 19-30<br />
**Complete and Review Collaboration talks and present them<br />
**Attend the collaboration meeting<br />
**Continue to derive solenoid specifications for Cooler<br />
**Start to derive new ICRADA details for HZDR collaboration</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-03-16&diff=7742018-03-162018-04-02T20:29:45Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata'''<br><br />
''No report.''<br />
<br><br />
<br />
----<br />
'''Accelerator Physics - T. Satogata'''<br><br />
Todd Satogata<br />
Previous two weeks (Mar 5-Mar 16)<br />
- SICK: Fri Mar 9<br />
- ADMIN: Leadership/group meetings, Lab Plan update, Drupal training, appraisal<br />
- JLEIC: Coordinate lattice freeze, organization of next steps<br />
- JLEIC: Work with Yuhong to develop collaboration meet program<br />
- IPAC18: Scientific secretariat work (program codes, booklets, student program)<br />
- ODU: Continue teaching PHYS 417/517 Tue/Thu, Randy advising<br />
- OPS: Plan OOC, Beam Studies (Tuesdays), BTeam, optics support/tuning meetings<br />
- OPS: Hall D active collimator calibration planning, 12 GeV parameter meeting<br />
Next two weeks (Mar 19-Mar 30)<br />
- ADMIN: Leadership/group meetings, cancer therapy brainstorming meet<br />
- ADMIN: Dave Douglas retirement lunch org (Mar 30)<br />
- JLEIC: Prepare collaboration meeting talks, templates for speakers<br />
- JLEIC: Collaboration Meeting (Mar 26-28), Impedance meeting (Mar 19)<br />
- IPAC18: Scientific secretariat work (poster codes, booklets, student program)<br />
- ODU: Continue teaching PHYS 417/517 Tue/Thu, Randy advising<br />
- ODU: Potential graduate student visit (Fri Mar 23)<br />
- OPS: Plan OOC, Beam Studies (Tuesdays), BTeam, optics support/tuning meetings<br />
- OPS: 12 GeV parameter document convergence input<br />
<br />
Alex Bogacz<br />
Previous two weeks (Mar 5-Mar 16)<br />
- 12 GeV Beam Parameter Table<br />
- REU candidates selection<br />
- M56 control revisited<br />
Next two weeks (Mar 19-Mar 30)<br />
- IPAC'18 Peer Rev.<br />
- 12 GeV Beam Requirements<br />
- Tech Transfer Workshop<br />
- JLEIC: Collaboration Meeting (March 26-28)<br />
<br />
David Douglas<br />
Previous two weeks (Mar 5-Mar 16)<br />
- Finished up "Why PERLE" note requested by Max Klein<br />
- Generated better-optimized "Faux FFAG" arc with ideal solution iterating<br />
between spreadsheet and DIMAD<br />
- Revised CCR matching, to Chris for CCR multiturn model<br />
Next two weeks (Mar 19-Mar 30)<br />
- Iterate Faux FFG arc with thin quad fringe fields<br />
- Updating ERL/CCR matching, adjust working point of CCR<br />
- Work with Chris to followup on Cheng-Ying's uBI gain suggestions<br />
- JLEIC: Collaboration Meeting (Mar 26-28)<br />
- Retirement process!<br />
<br />
Rui Li<br />
Previous two weeks (Mar 5-Mar 16)<br />
- JLEIC: Evaluate ion trapping in e-ring, clearing gap evaluation, with<br />
concerns appearing for fast-ion instability at 3 and 5 GeV<br />
- JLEIC: Contact Demin Zhou re IR bellow design, coordinate with Wiseman<br />
Next two weeks (Mar 19-Mar 30)<br />
- JLEIC: Summarize estimates for collective effects, prepare talk for<br />
collaboration meeting<br />
- JLEIC: Collaboration Meeting (Mar 26-28), Impedance meeting (Mar 19)<br />
- Start writing papers for IPAC18<br />
<br />
Ed Nissen<br />
Previous two weeks (Mar 5-Mar 16)<br />
- VACATION: Mon Mar 5, SICK: 1/2 Tue Mar 6, Wed Mar 7<br />
- JLEIC: DESIREE gear changing tests LDRD LOI preparation<br />
- JLEIC: Finish booster cleanup, working point, ramping development<br />
- JLEIC: Retune booster to reduce overall sextupole strengths<br />
Next two weeks (Mar 19-Mar 30)<br />
- JLEIC: Continue DESIREE LDRD preparation, budgeting<br />
- JLEIC: Prepare talk for collaboration meeting<br />
- JLEIC: Collaboration Meeting (Mar 26-28)<br />
<br />
Chris Tennant<br />
Previous two weeks (Mar 5-Mar 16)<br />
- JLEIC: revisiting some mBI analysis for one of the CCR arcs<br />
(found a numerical artifact that for certain values of the<br />
mesh_number, where the gain is orders of magnitude larger)<br />
- JLEIC: increasing fidelity of CCR S2E lattice - namely, adding the<br />
kickers in the beam exchange region and trying to wrap my head<br />
around how it works<br />
- JLEIC: able to get good agreement - with CSR - between elegant and GPT<br />
for the "simple arc" lattice<br />
- IPAC18: foreign travel training!<br />
Next two weeks (Mar 19-Mar 30)<br />
- JLEIC: Prepare talk for collaboration meeting<br />
- JLEIC: Collaboration Meeting (Mar 26-28)<br />
- IPAC18: prep (paper and poster)<br />
<br />
Randy Gamage<br />
Previous two weeks (Mar 5-Mar 16)<br />
- Dissertation writing: Working on bunch splitting chapter<br />
Next two weeks (Mar 19-Mar 30)<br />
- Dissertation writing: Revise bunch compressor chapter<br />
- Dissertation writing: Continue bunch splitting chapter<br />
- JLEIC: Meet with Rui Li, get ideas on esme instability tests<br />
<br />
----<br />
'''Accelerator R and D - Y. Zhang''' <br><br />
Slava Derebenev<br />
*Continued development of advanced concepts for JLEIC high energy cooler<br />
<br><br />
<br />
Fanglei Lin<br />
*Finished the electron collider ring design and presented in the JLEIC R&D meeting.<br />
*Performed tune scan and continued misalignment study for the electron ring.<br />
*Continued setting up spin tracking in the BMAD using the latest electron ring design.<br />
*Miscellaneous: attended discussion of IP magnets with engineers, attended the JLEIC R&D meetings, attended JLEIC detector meeting, attended JLEIC general meetings.<br />
<br><br />
<br />
Vasiliy Morozov<br />
*Ion collider ring design: development of a new design version geometrically matched to the electron collider ring and including various updates.<br />
*Interaction region design: meetings with engineers and detector designers.<br />
*Geometry tagging LDRD: teleconferences with collaborators.<br />
<br><br />
<br />
Amy Sy<br />
*Compiling recent toroidal merger simulation results and methods for presentation at IPAC 2018.<br />
*Set up WARP simulation environment to model two counter-propagating magnetized beams in an accelerating field. Magnetized beam is generated using a flat beam transform, and the two beams currently interact only once in the "linac". Currently setting up diagnostics to evaluate emittance growth.<br />
*Survey of transverse feedback systems: for hadron machines especially, existing systems tend to be much more narrowband than is required for mitigating the coupled bunch instability for JLEIC. J-PARC Main Ring feedback system for intrabunch feedback looks promising, with a bandwidth about half of the JLEIC requirement, and is currently limited by the power amplifier.<br />
*Working with S. Wang to contribute transverse feedback system requirements to the JLEIC Collaboration Meeting talk on feedback systems.<br />
<br><br />
<br />
Guohui Wei<br />
*I find a tune different between MADX and ELEGANT with detector solenoid effect. After discussing with the host of ELEGANT CODE, Michael Borland, we find the tune and twiss parameters are not correct in a ELEGANT output from a ring lattice with a coupling section. And Michael Borland agree to make an upgrade on ELEGANT in 1-2 weeks for the JLEIC lattice simulation.<br />
*LDRD study of the geometry tagging after the collision. I study the multiplicities of n, p, d and alfa after the collision of e+208Pb at 10 x 40 GeV. Meanwhile, A,Z,p, and alfa of final state are also statistic in their multiplicities. Those two analysis are contracted with A and detected neutron at ZDC.<br />
*I also study the decoupling in IR of ion collider ring with nested skew quads in upstream triplet. Those result have been discussed with Renuka and Mike in BP meeting.<br />
<br><br />
<br />
Yuhong Zhang<br />
*Completed a program for the JLEIC collaboration meeting<br />
*Started preparation of slides for the collaboration meeting<br />
*Attended telecon for bunched beam cooling, and discussed and prepared a plan<br />
*Explored LDRD for JLEIC including small aperture magnets for high energy upgrade of the JLEIC ion collider ring<br />
*Attended various meetings<br />
<br><br />
<br />
----<br />
'''Computational Physics - Y. Roblin'''<br><br />
<br />
Kirsten Deitrick<br />
*Mar 3 - Mar 16<br />
**Cornell Straight Merger:<br />
*:-finish running additional simulations<br />
**CSR:<br />
*:-debugging KEK custom element on the cluster (it works locally with GPT 2.x)<br />
*:-finish implementing custom KEK element fix<br />
*:-present comparison of KEK CSR in Cooling meeting<br />
*:-KEK element deemed unphysical and GPT doesn't contain shielding - future work done in Bmad by Chris<br />
**eCloud:<br />
*:-remind Jean-Luc Vay about Warp+POSINST scripts<br />
*:-remind Miguel Furman about POSINST<br />
*:-NERSC account troubleshooting<br />
*:-reread previous tune shift estimate for MEIC<br />
**Impedance:<br />
*:-ion ring estimate using LHC values<br />
*:-PEP-X values<br />
*:-edit KEKB, SuperKEKB values<br />
*:-estimates of both rings<br />
*:-created impedance wiki<br />
**Meetings:<br />
*:-Cooler (x2, KEK CSR presentation)<br />
*:-JLEIC (x2)<br />
**Misc:<br />
*:-NERSC finally got back to me - they still have significant problems with new account creation<br />
<br />
*Mar 17 - Mar 30<br />
**Magnetized Beam:<br />
*:-finish fixing injector using FEL booster<br />
*:-existing Penner bend merger<br />
*:-prep for JLEIC Collaboration meeting<br />
**Cornell Straight Merger:<br />
*:-finish running additional simulations<br />
*:-summarize expected results/calibration settings for everyone else involved<br />
*:-keep an eye on coil production<br />
**eCloud:<br />
*:-install PyECLOUD<br />
*:-start estimates for different SEY values using current ion beam parameters<br />
*:-nag Jean-Luc Vay (Warp+POSINST), M. Furman (POSINST), NERSC (account creation failure)<br />
**Impedance:<br />
*:-meeting (present on current estimates of both rings and CCR)<br />
**Meetings:<br />
*:-Cooler<br />
*:-JLEIC<br />
*:-Impedance<br />
*:-JLEIC Collaboration<br />
*:-Cornell trip<br />
**Misc:<br />
*:-submit LINAC 2018 abstracts for eCloud, magnetized LERF injector/mergers (300 pC maximum), compact ICLS (the invited talk)<br />
<br><br />
<br />
Yves Roblin<br />
*CEBAF <br />
**write technote on raytrace analysis<br />
**Prepare for D. turner to be matrixed during the summer<br />
**Review optics from CEBAF, slight dispersion leakage in vertical<br />
*JLEIC<br />
**Carrying out simulations at NESRC for bbeam in the context of the FOA<br />
**Preparing for upcoming coll. Meeting.<br />
<br><br />
<br />
He Zhang<br />
*Mar 3 - Mar 16<br />
**JSPEC Development - Read a few references to understand how the electron beam space charge model is derived. Basically, there are two effects due to the space charge field. Firstly, the potential changes within the electron bunch along with the distance to the axis, which results in a change of longitudinal velocity. Second, under the effects of both the electric field caused by the space charge and the external magnetic field, electrons starts to rotate around the magnetic field line with a drift velocity. Both effects will change the ion velocity with respect to the electrons. The second effect also leads to an increase of the electron temperature. The code to calculate both effects for DC electron beam has been finished. It is under development for Gaussian beam.<br />
**Extend the tpsa code - Lingyun’s tpsa code is used in my fmm code for arbitrary kernel function. This code has been revised for better performance and additional function, so that we can perform some differential algebra work without using COSY Infinity. Firstly, the memory management was changed. It was changed once before for FMM usage, by allocating the memory pool for all DA vectors at the beginning instead of allocating for each DA vector when they are used for the first time. This approach significantly increased the efficiency. But in that application, the user has to manually clean the pool, otherwise the pool will be full soon and the calculation cannot continued. This is inconvenient. Now the memory pool is controlled by a linked list, which records the available memory for new DA vectors. The linked list is upgraded automatically each time when a DA vector is created or deleted. In this way, the user will never need to worry about the memory pool as long as the pool size is not too small. The efficiency of this approach is a little worse than the one in FMM, due to the operations on the linked list, but still much better than the original way. Secondly, a few functions are revised for better performance and a few functions are added, e.g. calculating an arbitrary power of a DA vector. Thirdly, the ultimate purpose is to calculate the composition of two groups of DA vectors, which is essential for DA based algorithms. The original tpsa code has this function, but it was implemented in a very naïve way with bad efficiency. A group of functions have been added, including subscribing one base in a DA vector by a real number, subscribing one base in a DA vector by a DA vector, subscribing all bases in a DA vector by a group of DA vectors, composition of two groups of DA vectors, composition of a group of DA vectors with a group of real numbers (tracking with a DA map). Finally, a wrapper is added with overloaded operators, so that one can use the DA vectors as basic data types. The development is almost done. Most functions have been finished and tested with COSY Infinity. I need to test two more functions and document the code.<br />
**Update on the kernel independent FMM - Updated the DA package used in the kernel independent FMM code by adding moving constructor and revising the operator overloading. The efficiency was improved for about 3%. Now I think the code is good enough for demonstrating the idea. I will start generating data and preparing a paper on it.<br />
**Others - Reviewed four papers.<br />
*Mar 17 - Mar 30<br />
**Cooling parameters were changed slightly as I was notified. I will do some simulation with the new parameters for the coming collaboration meeting.<br />
**Prepare for my talk in the collaboration meeting.<br />
**Revise the FMM paper.<br />
**Review two more papers. (I feel the reviews took too much time. I’m going to control the number of papers below two per month, after I finish those at ha <br />
<br><br />
<br />
----<br />
Diagnostic Development - K. Jordan<br />
''No report.''<br />
<br><br />
<br />
<br />
----<br />
'''LERF - S. Benson''' <br><br />
*March 5-16<br />
**Finished preparing two talks for JLEIC collaboration meeting, partially complete with a third.<br />
**Updated GTS laser training course materials and derived a new course for non-laser users<br />
**Hosted cooler ring meetings on March 7, and 14 and wrote up minutes<br />
**Numerology tech note awaiting input from Jiquan <br />
**Made some progress in deriving solenoid specifications for Cooler. Trying to understand how to extrapolate.<br />
**Completed MED01, Rad worker I, and Safety Observation training<br />
**Looked at THz FEL specifications for HZDR. <br />
**Assisted Michelle Shinn in clearing out boxes from the LERF and recovering files from her old computers.<br />
*March 19-30<br />
**Complete and Review Collaboration talks and present them<br />
**Attend the collaboration meeting<br />
**Continue to derive solenoid specifications for Cooler<br />
**Start to derive new ICRADA details for HZDR collaboration</div>Anicholshttps://wiki.jlab.org/casa-adminwiki/index.php?title=2018-03-16&diff=7732018-03-162018-04-02T20:28:32Z<p>Anichols: </p>
<hr />
<div>'''Director - M. Spata'''<br><br />
''No report.''<br />
<br><br />
<br />
----<br />
'''Accelerator Physics - T. Satogata'''<br><br />
Todd Satogata<br />
Previous two weeks (Mar 5-Mar 16)<br />
- SICK: Fri Mar 9<br />
- ADMIN: Leadership/group meetings, Lab Plan update, Drupal training, appraisal<br />
- JLEIC: Coordinate lattice freeze, organization of next steps<br />
- JLEIC: Work with Yuhong to develop collaboration meet program<br />
- IPAC18: Scientific secretariat work (program codes, booklets, student program)<br />
- ODU: Continue teaching PHYS 417/517 Tue/Thu, Randy advising<br />
- OPS: Plan OOC, Beam Studies (Tuesdays), BTeam, optics support/tuning meetings<br />
- OPS: Hall D active collimator calibration planning, 12 GeV parameter meeting<br />
Next two weeks (Mar 19-Mar 30)<br />
- ADMIN: Leadership/group meetings, cancer therapy brainstorming meet<br />
- ADMIN: Dave Douglas retirement lunch org (Mar 30)<br />
- JLEIC: Prepare collaboration meeting talks, templates for speakers<br />
- JLEIC: Collaboration Meeting (Mar 26-28), Impedance meeting (Mar 19)<br />
- IPAC18: Scientific secretariat work (poster codes, booklets, student program)<br />
- ODU: Continue teaching PHYS 417/517 Tue/Thu, Randy advising<br />
- ODU: Potential graduate student visit (Fri Mar 23)<br />
- OPS: Plan OOC, Beam Studies (Tuesdays), BTeam, optics support/tuning meetings<br />
- OPS: 12 GeV parameter document convergence input<br />
<br />
Alex Bogacz<br />
Previous two weeks (Mar 5-Mar 16)<br />
- 12 GeV Beam Parameter Table<br />
- REU candidates selection<br />
- M56 control revisited<br />
Next two weeks (Mar 19-Mar 30)<br />
- IPAC'18 Peer Rev.<br />
- 12 GeV Beam Requirements<br />
- Tech Transfer Workshop<br />
- JLEIC: Collaboration Meeting (March 26-28)<br />
<br />
David Douglas<br />
Previous two weeks (Mar 5-Mar 16)<br />
- Finished up "Why PERLE" note requested by Max Klein<br />
- Generated better-optimized "Faux FFAG" arc with ideal solution iterating<br />
between spreadsheet and DIMAD<br />
- Revised CCR matching, to Chris for CCR multiturn model<br />
Next two weeks (Mar 19-Mar 30)<br />
- Iterate Faux FFG arc with thin quad fringe fields<br />
- Updating ERL/CCR matching, adjust working point of CCR<br />
- Work with Chris to followup on Cheng-Ying's uBI gain suggestions<br />
- JLEIC: Collaboration Meeting (Mar 26-28)<br />
- Retirement process!<br />
<br />
Rui Li<br />
Previous two weeks (Mar 5-Mar 16)<br />
- JLEIC: Evaluate ion trapping in e-ring, clearing gap evaluation, with<br />
concerns appearing for fast-ion instability at 3 and 5 GeV<br />
- JLEIC: Contact Demin Zhou re IR bellow design, coordinate with Wiseman<br />
Next two weeks (Mar 19-Mar 30)<br />
- JLEIC: Summarize estimates for collective effects, prepare talk for<br />
collaboration meeting<br />
- JLEIC: Collaboration Meeting (Mar 26-28), Impedance meeting (Mar 19)<br />
- Start writing papers for IPAC18<br />
<br />
Ed Nissen<br />
Previous two weeks (Mar 5-Mar 16)<br />
- VACATION: Mon Mar 5, SICK: 1/2 Tue Mar 6, Wed Mar 7<br />
- JLEIC: DESIREE gear changing tests LDRD LOI preparation<br />
- JLEIC: Finish booster cleanup, working point, ramping development<br />
- JLEIC: Retune booster to reduce overall sextupole strengths<br />
Next two weeks (Mar 19-Mar 30)<br />
- JLEIC: Continue DESIREE LDRD preparation, budgeting<br />
- JLEIC: Prepare talk for collaboration meeting<br />
- JLEIC: Collaboration Meeting (Mar 26-28)<br />
<br />
Chris Tennant<br />
Previous two weeks (Mar 5-Mar 16)<br />
- JLEIC: revisiting some mBI analysis for one of the CCR arcs<br />
(found a numerical artifact that for certain values of the<br />
mesh_number, where the gain is orders of magnitude larger)<br />
- JLEIC: increasing fidelity of CCR S2E lattice - namely, adding the<br />
kickers in the beam exchange region and trying to wrap my head<br />
around how it works<br />
- JLEIC: able to get good agreement - with CSR - between elegant and GPT<br />
for the "simple arc" lattice<br />
- IPAC18: foreign travel training!<br />
Next two weeks (Mar 19-Mar 30)<br />
- JLEIC: Prepare talk for collaboration meeting<br />
- JLEIC: Collaboration Meeting (Mar 26-28)<br />
- IPAC18: prep (paper and poster)<br />
<br />
Randy Gamage<br />
Previous two weeks (Mar 5-Mar 16)<br />
- Dissertation writing: Working on bunch splitting chapter<br />
Next two weeks (Mar 19-Mar 30)<br />
- Dissertation writing: Revise bunch compressor chapter<br />
- Dissertation writing: Continue bunch splitting chapter<br />
- JLEIC: Meet with Rui Li, get ideas on esme instability tests<br />
<br />
----<br />
'''Accelerator R and D - Y. Zhang''' <br><br />
Slava Derebenev<br />
*Continued development of advanced concepts for JLEIC high energy cooler<br />
<br />
Fanglei Lin<br />
*Finished the electron collider ring design and presented in the JLEIC R&D meeting.<br />
*Performed tune scan and continued misalignment study for the electron ring.<br />
*Continued setting up spin tracking in the BMAD using the latest electron ring design.<br />
*Miscellaneous: attended discussion of IP magnets with engineers, attended the JLEIC R&D meetings, attended JLEIC detector meeting, attended JLEIC general meetings.<br />
<br />
Vasiliy Morozov<br />
*Ion collider ring design: development of a new design version geometrically matched to the electron collider ring and including various updates.<br />
*Interaction region design: meetings with engineers and detector designers.<br />
*Geometry tagging LDRD: teleconferences with collaborators.<br />
<br />
Amy Sy<br />
*Compiling recent toroidal merger simulation results and methods for presentation at IPAC 2018.<br />
*Set up WARP simulation environment to model two counter-propagating magnetized beams in an accelerating field. Magnetized beam is generated using a flat beam transform, and the two beams currently interact only once in the "linac". Currently setting up diagnostics to evaluate emittance growth.<br />
*Survey of transverse feedback systems: for hadron machines especially, existing systems tend to be much more narrowband than is required for mitigating the coupled bunch instability for JLEIC. J-PARC Main Ring feedback system for intrabunch feedback looks promising, with a bandwidth about half of the JLEIC requirement, and is currently limited by the power amplifier.<br />
*Working with S. Wang to contribute transverse feedback system requirements to the JLEIC Collaboration Meeting talk on feedback systems.<br />
<br />
Guohui Wei<br />
*I find a tune different between MADX and ELEGANT with detector solenoid effect. After discussing with the host of ELEGANT CODE, Michael Borland, we find the tune and twiss parameters are not correct in a ELEGANT output from a ring lattice with a coupling section. And Michael Borland agree to make an upgrade on ELEGANT in 1-2 weeks for the JLEIC lattice simulation.<br />
*LDRD study of the geometry tagging after the collision. I study the multiplicities of n, p, d and alfa after the collision of e+208Pb at 10 x 40 GeV. Meanwhile, A,Z,p, and alfa of final state are also statistic in their multiplicities. Those two analysis are contracted with A and detected neutron at ZDC.<br />
*I also study the decoupling in IR of ion collider ring with nested skew quads in upstream triplet. Those result have been discussed with Renuka and Mike in BP meeting.<br />
<br />
Yuhong Zhang<br />
*Completed a program for the JLEIC collaboration meeting<br />
*Started preparation of slides for the collaboration meeting<br />
*Attended telecon for bunched beam cooling, and discussed and prepared a plan<br />
*Explored LDRD for JLEIC including small aperture magnets for high energy upgrade of the JLEIC ion collider ring<br />
*Attended various meetings<br />
<br><br />
<br />
----<br />
'''Computational Physics - Y. Roblin'''<br><br />
<br />
Kirsten Deitrick<br />
*Mar 3 - Mar 16<br />
**Cornell Straight Merger:<br />
*:-finish running additional simulations<br />
**CSR:<br />
*:-debugging KEK custom element on the cluster (it works locally with GPT 2.x)<br />
*:-finish implementing custom KEK element fix<br />
*:-present comparison of KEK CSR in Cooling meeting<br />
*:-KEK element deemed unphysical and GPT doesn't contain shielding - future work done in Bmad by Chris<br />
**eCloud:<br />
*:-remind Jean-Luc Vay about Warp+POSINST scripts<br />
*:-remind Miguel Furman about POSINST<br />
*:-NERSC account troubleshooting<br />
*:-reread previous tune shift estimate for MEIC<br />
**Impedance:<br />
*:-ion ring estimate using LHC values<br />
*:-PEP-X values<br />
*:-edit KEKB, SuperKEKB values<br />
*:-estimates of both rings<br />
*:-created impedance wiki<br />
**Meetings:<br />
*:-Cooler (x2, KEK CSR presentation)<br />
*:-JLEIC (x2)<br />
**Misc:<br />
*:-NERSC finally got back to me - they still have significant problems with new account creation<br />
<br />
*Mar 17 - Mar 30<br />
**Magnetized Beam:<br />
*:-finish fixing injector using FEL booster<br />
*:-existing Penner bend merger<br />
*:-prep for JLEIC Collaboration meeting<br />
**Cornell Straight Merger:<br />
*:-finish running additional simulations<br />
*:-summarize expected results/calibration settings for everyone else involved<br />
*:-keep an eye on coil production<br />
**eCloud:<br />
*:-install PyECLOUD<br />
*:-start estimates for different SEY values using current ion beam parameters<br />
*:-nag Jean-Luc Vay (Warp+POSINST), M. Furman (POSINST), NERSC (account creation failure)<br />
**Impedance:<br />
*:-meeting (present on current estimates of both rings and CCR)<br />
**Meetings:<br />
*:-Cooler<br />
*:-JLEIC<br />
*:-Impedance<br />
*:-JLEIC Collaboration<br />
*:-Cornell trip<br />
**Misc:<br />
*:-submit LINAC 2018 abstracts for eCloud, magnetized LERF injector/mergers (300 pC maximum), compact ICLS (the invited talk)<br />
<br><br />
<br />
Yves Roblin<br />
*CEBAF <br />
**write technote on raytrace analysis<br />
**Prepare for D. turner to be matrixed during the summer<br />
**Review optics from CEBAF, slight dispersion leakage in vertical<br />
*JLEIC<br />
**Carrying out simulations at NESRC for bbeam in the context of the FOA<br />
**Preparing for upcoming coll. Meeting.<br />
<br><br />
<br />
He Zhang<br />
*Mar 3 - Mar 16<br />
**JSPEC Development - Read a few references to understand how the electron beam space charge model is derived. Basically, there are two effects due to the space charge field. Firstly, the potential changes within the electron bunch along with the distance to the axis, which results in a change of longitudinal velocity. Second, under the effects of both the electric field caused by the space charge and the external magnetic field, electrons starts to rotate around the magnetic field line with a drift velocity. Both effects will change the ion velocity with respect to the electrons. The second effect also leads to an increase of the electron temperature. The code to calculate both effects for DC electron beam has been finished. It is under development for Gaussian beam.<br />
**Extend the tpsa code - Lingyun’s tpsa code is used in my fmm code for arbitrary kernel function. This code has been revised for better performance and additional function, so that we can perform some differential algebra work without using COSY Infinity. Firstly, the memory management was changed. It was changed once before for FMM usage, by allocating the memory pool for all DA vectors at the beginning instead of allocating for each DA vector when they are used for the first time. This approach significantly increased the efficiency. But in that application, the user has to manually clean the pool, otherwise the pool will be full soon and the calculation cannot continued. This is inconvenient. Now the memory pool is controlled by a linked list, which records the available memory for new DA vectors. The linked list is upgraded automatically each time when a DA vector is created or deleted. In this way, the user will never need to worry about the memory pool as long as the pool size is not too small. The efficiency of this approach is a little worse than the one in FMM, due to the operations on the linked list, but still much better than the original way. Secondly, a few functions are revised for better performance and a few functions are added, e.g. calculating an arbitrary power of a DA vector. Thirdly, the ultimate purpose is to calculate the composition of two groups of DA vectors, which is essential for DA based algorithms. The original tpsa code has this function, but it was implemented in a very naïve way with bad efficiency. A group of functions have been added, including subscribing one base in a DA vector by a real number, subscribing one base in a DA vector by a DA vector, subscribing all bases in a DA vector by a group of DA vectors, composition of two groups of DA vectors, composition of a group of DA vectors with a group of real numbers (tracking with a DA map). Finally, a wrapper is added with overloaded operators, so that one can use the DA vectors as basic data types. The development is almost done. Most functions have been finished and tested with COSY Infinity. I need to test two more functions and document the code.<br />
**Update on the kernel independent FMM - Updated the DA package used in the kernel independent FMM code by adding moving constructor and revising the operator overloading. The efficiency was improved for about 3%. Now I think the code is good enough for demonstrating the idea. I will start generating data and preparing a paper on it.<br />
**Others - Reviewed four papers.<br />
*Mar 17 - Mar 30<br />
**Cooling parameters were changed slightly as I was notified. I will do some simulation with the new parameters for the coming collaboration meeting.<br />
**Prepare for my talk in the collaboration meeting.<br />
**Revise the FMM paper.<br />
**Review two more papers. (I feel the reviews took too much time. I’m going to control the number of papers below two per month, after I finish those at ha <br />
<br><br />
<br />
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Diagnostic Development - K. Jordan<br />
<br />
<br />
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'''LERF - S. Benson''' <br><br />
*March 5-16<br />
**Finished preparing two talks for JLEIC collaboration meeting, partially complete with a third.<br />
**Updated GTS laser training course materials and derived a new course for non-laser users<br />
**Hosted cooler ring meetings on March 7, and 14 and wrote up minutes<br />
**Numerology tech note awaiting input from Jiquan <br />
**Made some progress in deriving solenoid specifications for Cooler. Trying to understand how to extrapolate.<br />
**Completed MED01, Rad worker I, and Safety Observation training<br />
**Looked at THz FEL specifications for HZDR. <br />
**Assisted Michelle Shinn in clearing out boxes from the LERF and recovering files from her old computers.<br />
*March 19-30<br />
**Complete and Review Collaboration talks and present them<br />
**Attend the collaboration meeting<br />
**Continue to derive solenoid specifications for Cooler<br />
**Start to derive new ICRADA details for HZDR collaboration</div>Anichols