Difference between revisions of "2019-01-18-LeadershipReports"

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'''Director - Todd Satogata''' <br>
 
'''Director - Todd Satogata''' <br>
  
   Previous two weeks (May 14-May 25)
+
   Previous two weeks ()
       - JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings
+
       -  
      - JLEIC: P&C Meeting (May 21)
+
   Next two weeks ()
      - ODU: Continue Randy advising, presentation to committee (May 24)
+
       -  
      - ADMIN: Leadership/group meetings, staffing input and planning
+
      - ADMIN: Prepare for summer student arrivals
+
      - IPAC18: Complete proceedings, light peer review, delegate survey
+
      - OPS: BTeam meetings, Hall D optics analysis
+
      - VACATION: Half-days May 22-25 (Leah hospital visit for broken hip)
+
   Next two weeks (May 28-June 8)
+
       - JLEIC: pCDR writing, template, EIC lunch, impedance and R&D meetings
+
      - JLEIC: Further organize ICFA beam dynamics newsletter input
+
      - ADMIN: Summer student setting in, work planning
+
      - ADMIN: Leadership/group meetings, staffing input and planning
+
      - ADMIN: CASA group meeting (Jun 6)
+
      - ODU: Continue Randy advising, dissertation draft finalization
+
      - IPAC18: Finalize proceedings, delegate survey report
+
  
 
Alex Bogacz
 
Alex Bogacz
    Previous two weeks (May 14-May 25)
+
 
       - IPAC18: Light peer review paper review, QA
+
  Previous two weeks ()
      - ADMIN: Phys Rev paper review
+
       -  
      - ADMIN: Review five STFC grant proposals (for UK)
+
  Next two weeks ()
    Next two weeks (May 28-June 8)
+
       -
       - ADMIN: Summer student lecture prep, lecture (June 5)
+
      - IPAC18: Light peer review paper final checks and delivery
+
      - LHEC: Work on paper on LHeC ERL scaling
+
  
 
Rui Li
 
Rui Li
    Previous two weeks (May 14-May 25)
+
 
       - JLEIC: Impedance meeting (May 14)
+
  Previous two weeks ()
      - JLEIC: finish IPAC paper on longitudinal coupled bunch instability
+
       -  
      - VACATION: (May 17-18, May 25 half-day)
+
  Next two weeks ()
      - JLEIC: Discuss HOM ion ring damping with Frank Marhauser
+
       -
      - JLEIC: Work on pCDR writeup
+
    Next two weeks (May 28-June 8)
+
       - JLEIC: Work on pCDR writeup
+
      - JLEIC: Calculate ion coupled bunch instability growth rates with
+
        new HOM design from Marhauser
+
      - JLEIC: Work on ICFA newsletter section on beam dynamics in JLEIC rings
+
  
 
Ed Nissen
 
Ed Nissen
    Previous two weeks (May 14-May 25)
+
 
       - JLEIC: Continue draft writing for pCDR
+
  Previous two weeks ()
      - JLEIC: Continue booster nonlinear optimization work
+
       -  
      - JLEIC: Start Booster acceleration simulations
+
  Next two weeks ()
    Next two weeks (May 28-June 8)
+
       -  
       - ADMIN: Summer student setting in, work planning
+
      - JLEIC: Continue Booster acceleration simulations
+
      - JLEIC: Continue booster nonlinear optimization work
+
      - JLEIC: Finish draft writing for pCDR
+
  
 
Chris Tennant
 
Chris Tennant
    Previous two weeks (May 14-May 25)
+
 
       - PERLE: Continued CSR analysis, initial S2E PERLE bunch tracking
+
  Previous two weeks ()
      - JLEIC: gather information/text/figures for pCDR draft
+
       -  
      - JLEIC: Troubleshoot multiple versions of Cheng-Ying Vlasov Solver
+
  Next two weeks ()
    Next two weeks (May 28-June 8)
+
       -
      - JLEIC: investigate effect of using 2x longer bunch in CCR
+
      - JLEIC: begin pushing a realistic (via Fay) bunch through ERL
+
        driver of CCR and assess performance (i.e. will it make it
+
        around the first arc, let alone make it to the CCR?)
+
       - JLEIC: further pCDR prep/writing
+
  
  
 
----
 
----
'''Accelerator R &amp; D - Y. Zhang'''<br>
+
'''Accelerator R &amp; D - Yuhong Zhang'''<br>
 +
  Previous two weeks (Jan 7 - Jan 18)
 +
  - Considered various issues and potential optimization (IR, cooling) for
 +
    100 GeV CM energy JLEIC
 +
  - Prepared FOA report (cooling simulation, bunched beam experiment
 +
    and coherent electron cooling
 +
  - Prepared talks for Hong Kong High Energy Physics Program
 +
  Next two weeks (Jan 18 - Feb 1)
 +
  - Attend the HK HEP program in the second experiment (in the second week)
 +
  - Make planning of Lijun Mao's visit
 +
  - Planed spring JLEIC collaboration meeting
 +
 
  
 
Fanglei Lin
 
Fanglei Lin
   Previous two weeks (Dec 28 - Jan 4)
+
   Previous two weeks (Jan 7 - Jan 18)
     - Worked on the storage ring cooler project
+
     - Optimizing the electron collider ring design with PEP-II magnets
     - Worked on studying nonlinear beam dynamics in the electron collider ring
+
     - Working on the storage ring cooler project
     - Miscellaneous: attended the uses of UITF meeting, attended the  
+
     - Miscellaneous: attended the spin transparency test teleconference, attended the Pre-CDR Update meeting, attended
    - JLEIC R&D meeting, attended the Innovative HE Cooling Project Status  
+
      the JLEIC R&D meeting, attended the Innovative HE Cooling Project Status meeting, attended the Storage Ring Cooler
      meeting, attended the Storage Ring Cooler meeting, attended JLEIC  
+
      meeting, attended JLEIC general meeting
      general meeting
+
   Next two weeks (Jan 18 - Feb 1)
   Next two weeks (Jan 7 - Jan 18)
+
    - Work on the electron collider ring design with PEP-II magnets
 
     - Work on the storage ring cooler project
 
     - Work on the storage ring cooler project
    - Revisit the electron collider ring design with PEP-II magnets
 
 
     - Electron spin study using BMAD
 
     - Electron spin study using BMAD
 
  
 
<br>
 
<br>
 
Vasiliy Morozov
 
Vasiliy Morozov
   Previous two weeks (Dec 28 - Jan 4)
+
   Previous two weeks (Jan 7 - Jan 18)
     - Spin transparency experiment: calculation of the spin response function of RHIC, spin tracking simulation setup
+
     - Spin transparency experiment: teleconference with collaborators and
    - IR design: optimization for 200 GeV/c ion momentum
+
      calculation of the spin response function of RHIC
    - SBIR: preparation of an LoI for space charge mitigation
+
    - Redesign of ion interaction region for 200 GeV
   Next two weeks (Jan 7 - Jan 18)
+
    - Preparation of the DoE quarterly reports
     - Preparation of the DoE quarterly report
+
    - Miscellaneous: postdoc interview, storage ring cooler, collimation
     - Work on spin transparency experiment
+
   Next two weeks (Jan 18 - Feb 1)
     - Continue IR design optimization, design of a correction system
+
     - Completion of the DoE quarterly reports
     - Analysis of crab crossing experimental data
+
     - Ion IR and collider ring design
 +
     - pCDR update
 +
     - Spin transparency simulations
 +
 
  
 
<br>
 
<br>
 
Amy Sy
 
Amy Sy
  Previous two weeks (Dec 28 - Jan 4)
+
Previous two weeks (Jan 7 - Jan 18)
     - Preparing for the DOE/SC Independent Project Review of  
+
     - Served on the review committee covering the primary and neutrino beamlines
      DUNE/LBNF at Fermilab; getting familiar with the project
+
      as part of the DOE/SC review of LBNF/DUNE at Fermilab.
      and current status. Participated in a conference call with
+
    - Wrote and submitted the Beamline portion of the final report.
      LBNF Beamline team members in advance of the review.
+
     - Met with Zack Conway and Brahim Mustapha at ANL to discuss the
     - Studying TRACK code and input files for the ion linac in
+
    - JLEIC ion linac. Discussed polarization tracking, H- intrabeam stripping,
      advance of meeting with ANL collaborators to discuss  
+
       and stripping chicane design/optimization as paths for further design
      current and future ion linac work.
+
      studies. Working with Brahim to get the latest Trace3D and TRACK
    - Paper studies on intrabeam stripping of H- beam in
+
       inputs for the LEBT and full linac designs.
       superconducting linacs, as at LEAR and SNS, to evaluate
+
   Next two weeks (Jan 18 - Feb 1)
       the impact at JLEIC.
+
    - Continued work on getting the TRACK code running with the latest
   Next two weeks:
+
      version of the JLEIC ion linac lattice.
-Participating in the DOE/SC IPR of DUNE/LBNF as a member
+
    - First looks at IMP cooling data from December 2018 to start informing
of the Beamline review team.
+
      Spring 2019 experimental goals.
-Meeting with Brahim Mustapha and Zack Conway at ANL to  
+
 
discuss the ion linac.
+
-Follow-on activities related to both trips.
+
  
<br>
 
Guohui Wei
 
*On Leave
 
<br>
 
Yuhong Zhang
 
*Explored RHIC magnets for the JLEIC ion collider ring
 
*Organized study on high-energy JLEIC, worked on several issues (ion injector, baseline, luminosity estimate)
 
*Worked with Fanglei on figure-8 footprint
 
*Attended several meetings to discuss preCDR
 
*Organized writing a contribution to ICFA Beam Dynamics newsletter
 
*Continued to write preCDR
 
 
<br>
 
<br>
 +
  
 
----
 
----
'''Computational Physics - Y. Roblin'''<br>
+
'''Computational Physics - Yves Roblin'''<br>
Kirsten Deitrick
+
Yves Roblin
*Last two weeks:
+
    CEBAF
**Magnetized beam (LERF PoP):
+
      - Setting up machine for spring run
*:-re-phasing for FEL boosters after correcting buncher setting
+
      - Developing metrics for machine assessment 
*:-discovering the correct off-crest phase for booster cavities
+
    OTHER
*:-zeroing after FEL booster
+
       - Meeting at ODU for machine learning collaboration
*:-discontinuing work on UITF; since it's being installed in CEBAF, it can't be used in the LERF PoP
+
      - Defining machine learning problem for possible collaboration
**Straight Merger at CBETA:
+
 
*:-beginning data analysis, getting GPT decks set up
+
**CSR:
+
*:-continue working on KEK CSR tech note (minimal)
+
**eCloud:
+
*:-pull ion beam sizes/parameters from presentations; feed into PyECLOUD
+
*:-email CERN questions related to PyECLOUD results
+
*:-email people (J.L. Vay, M. Furman, Amundson, Crittenden) about codes (WARP+POSINST, POSINST, different POSINST, ECLOUD)
+
**Impedance:
+
*:-general meeting
+
*:-smaller meeting specific to pre-CDR documentation
+
*:-schedule next impedance meeting (June 25th)
+
**Meetings:
+
*:-Impedance (general)
+
*:-Impedance (pre-CDR)
+
*:-CASA
+
*:-Cooler x2 (verbal preliminary on Straight Merger at CBeta results, -)
+
*:-CBETA weekly meeting x2
+
*:-JLEIC x2 (verbal preliminary on Straight Merger at CBeta results, -)
+
**Misc:
+
*:-Open House training
+
*:-paper maintenance (finding new, organizing all)
+
*:-helping Sajini with automation and space charge settings for ASTRA (Magnetized GTS)
+
*Next two weeks:
+
**Magnetized beam (LERF PoP):
+
*:-evaluate skew quad position/strength on correcting booster asymmetries
+
*:-start scan of charge/length/size
+
**Straight Merger at CBETA:
+
*:-continue data analysis
+
*:-begin rough simulations (actual simulations, if I can get the field map from George Biallas)
+
**CSR:
+
*:-continue working on KEK CSR tech note (minimal)
+
**eCloud:
+
*:-check with Vasiliy about other beam sizes / magnet strengths (outside of arc cell)
+
*:-run cases with variations
+
*:-start looking at instability thresholds?
+
**Meetings:
+
*:-CASA
+
*:-Cooler
+
*:-JLEIC (maybe)
+
<br>
+
Yves Roblin:
+
*CEBAF:
+
*:-chicane remodel
+
*:-BTEAM
+
*:-autosteer specs
+
*:-spin calculations for fall2019, writing document for new spin tool
+
      hc: 10573.4 MeV/c
+
       hb : 10575.8 MeV/c
+
      ha: 2218.39 MeV/c
+
*:-note on ced2elegant floor calculation
+
*:-estimates /simulations for 2R coupling
+
*:-optics cleanup, CED bug squishing
+
*:-preparation for half energy (SL off ) run for Hall A experiment , ARC1/ARC2/1C/3C strings cross-calibrations
+
*:-ELEGANT update on ops to version 34.0 (Anthony did the update, I did the checking)
+
*JLEIC:
+
*:-starting pulling together stuff for the pCDR beam-beam
+
*OTHER:
+
*:-comp. phys. journal review, Nim A review.
+
<br>
+
Dennis Turner
+
*CEBAF:
+
*:-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.
+
*:-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.
+
*:-AutoSteer.  Started working on AutoSteer from the prototypes and notes From Y. Roblin
+
*:-CED2ELEGANT.  Adding support for generating the starting floor coordinates and angles in the generated command files
+
 
<br>
 
<br>
 
He Zhang
 
He Zhang
*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:
+
    Previous two weeks (Jan 7 - Jan 18)
https://www.sciencedirect.com/science/article/pii/S0021999118303280?via%3Dihub
+
      - Development of JSPEC code
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.
+
      - DeCooling Rate Calculation for JLEIC with New Parameters
*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.
+
      - BeamBeam3D
*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.
+
      - River helped me to repeat Sergei’s deriving of the Bjorken and Mtingwa (BM) formula for the IBS rate calculation
pCDR writing
+
        using the elliptical integral and to check whether we can extend Sergei’s method on a general case including
*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.
+
        vertical dispersion and all the missing terms in the oringal BM formula. Our current conclusion is the total rate,
*Others
+
        summation of the rates in all the three directions, can be calculated using Sergei’s formula, as long as we calculate
*:-Reviewed two papers
+
        the eigenvalue of the I matrix, which is related to the dispersion matrix, numerically. Since the I matrix is a
*:-Work plan in the following two weeks
+
        symmetric real matrix, its eigenvalues can be calculated using some routine algorithm. We failed to find the explicit
*:-Continue writing and polishing the pCDR report
+
        formula for the rate in each individual direction. To find the formula, we need explicit expression of the
*:-Some coding for the kernel-independent FMM
+
        eigenvalue, which does not exist for a general matrix I. I have an idea of decompose the I matrix into three parts,
*:-Dust particle transport
+
        treat them separately and take the summation. But I am not positive this method gives correct or approximate answer.
*:-Understand the dispersive cooling theory
+
    Next two weeks (Jan 18 - Feb 1)
 +
      - The core-tail model for non-Gaussian IBS is in process
 +
      - Finish space charge effect in friction force calculation
 +
      - Continue documenting JSPEC development
 +
      - Electron beam Space charge effect on friction force calculation is in process.  
 +
      - Cooling Rate Calculation for JLEIC with New Parameters
 +
      - In the new parameter set of JLEIC, the proton beam emittance and bunch length at the collision energy have been
 +
        increased to mitigate the severe IBS effect. For the 63.3 GeV CM energy case, the collision frequency has been
 +
        changed back to 442 MHz, hence the charges per bunch has been significantly reduced, which helps to achieve a
 +
        milder IBS effect. The cooling rate and the IBS rate are calculated for both the 44.7 GeV CM energy and the 63.3
 +
        CM energy. 3.2 nC/bunch electrons provide enough cooling for both case. The challenge is still the distribution of
 +
        the cooling. As usual, we have very strong IBS effect in the horizontal direction and very strong cooling effect in
 +
        the vertical and longitudinal direction.  
 +
      - BeamBeam3D
 +
      - Yu Luo send me the MAD-X lattice file for RHIC at 250 GeV. With Vascily’s help, I am able to generate the truncated
 +
        map using the PTC package in MAD-X. This lattice file does not include any RF cavity, so the 4D truncated maps are
 +
        generated. When tracking up to 1 million turns with a 2nd order map, phase space increase happens. When we perform
 +
        symplectic tracking using our codes, the phase space volume conserves in the 1 million turns. All four kinds of
 +
        generating functions have been tested and they all work as expected. When using the 3rd order truncated map in
 +
        tracking, no noticeable phase space distortion is observed in up to 1 billion turns. This may be because that this
 +
        lattice does not include the high nonlinear sections, such as the interacting region.  
 +
    Others
 +
      - Write for three FOA quarterly reports
 +
      - Work plan in the following two weeks  
 +
      - Finish the core-tail model.
 +
      - Finish space charge effect in friction force calculation.
 +
      - Continue documenting JSPEC development.
 +
 
  
  
 
----
 
----
'''Diagnostic Development - K. Jordan''' <br>
+
'''Diagnostic Development - Kevin Jordan''' <br>
''No report''.
+
  Previous two weeks (Jan 7 - Jan 18)
 +
    - LCLS-II; Preparing for cooldown! There were issues with big bellows leaking at the cryocan connection
 +
    - Working on isotope beamline installation & restoration
 +
    - Invited to Program committee for IBIC 2019
 +
    - Invited to Machine Advisory Committee for Canadian Light Source
 +
  Next two weeks (Jan 18 - Feb 1)
 +
    - Cooldown 2 LCLS-II cryomodules
 +
    - Take vacation to install our kinetic art with George Neil in Toronto - [https://www.torontolightfest.com/]
 +
 
 +
 
 +
 
 +
Joe Gubeli
 +
  Previous two weeks (Jan 7 - Jan 18)
 +
    - Worked with several groups in preparing the two LCLS-II CMs for cool down. With a lot of help we were able to
 +
      successfully cool them both down to 4K and collect liquid.
 +
    - Completed the design of a new x-ray insertable viewer for the Bubble experiment in the 5D line. Most of the parts have
 +
      arrived and I have submitted drawings to the MS for fabrication.
 +
    - I have received the four new chambers for the Arc 7 SLMs, they look really nice. I submitted the chamber support
 +
      drawings for one set to the MS and they are awaiting signatures. Hint-hint.
 +
    - I work with Jianxun Yan on moving a linear motor with EPICS. After getting all of the parameters both in firmware and
 +
      in EPICS correct we were able to move the motor smoothly. A similar motor on a linear slide will be used for
 +
      Radiabeam's high power-high speed wire scanner (HSHPWS) to be installed in the BSY.
 +
  Next two weeks (Jan 18 - Feb 1)
 +
    - Some time on the HWHPWS in preparing a presentation for OPS and in helping Jianxun.
 +
    - Most of the time will be spent in designing the shielding (with a movable wall and target) for the Isotope project. I
 +
      will also need to work some on thermal simulations for this project as well.
 +
    - I will also be helping with Hot Checkout of the LERF, mainly with the viewers. The video switch partially works and we
 +
      have no trigger so no Beaminizer.
 +
 
  
  
 
----
 
----
'''LERF - S. Benson''' <br>
+
'''LERF - Steve Benson''' <br>
*May 14-25
+
**Derived draft budget for isotope production
+
  Previous two weeks (Jan 7 - Jan 18)
**Went over isotope project with DOE site office staff
+
      - Interviewed one candidate for postdoctoral position
**Summarized labor resources needed for FOA proposal
+
      - Wrote up draft of quarterly report for FOA project
**Continued cleaning up the LERF for isotope visit.
+
      - Met with SRF to develop harmonic kicker purchasing strategy.
**Attended teleconference with DOE for isotope project.
+
      - Met with seminar committee to get new member and schedule new talks
**Hosted Cooling ring meetings on May 16 and 23rd and wrote up minutes
+
      - Recruited invited talks for the High Brightness Beams 2019 workshop and the FEL 2019 conference
**Established CCR circumference for Pre-CDR
+
      - Derived new linac layout for the cooling ERL for Pre-CDR-100.
**Reviewed IRMMW paper, LDRD proposals and IPAC contribution
+
      - Met with CSI personnel to derive specifications for LERF commissioning specifications
*May 29-June 8
+
  Next two weeks (Jan 18 - Feb 1)
**Arrange for collaboration with HZDR for Elbe II facility.
+
      - Submit new text for LOD and safety envelope for LERF.
**Submit budget for isotope project
+
      - Summarize the ERLs for EIC workshop.
**Complete AWP for FOA proposal
+
      - Write up budget for Isotope quarterly report.
**Revise LOD to match new ASE document.
+
      - Submit quarterly reports for FOA and Isotope project.
**Complete question answers for LDRD proposals
+
      - Review coherent cooling literature and establish specification baseline
**Review a couple of AIP papers
+

Latest revision as of 16:01, 23 May 2019

Jan 7-Jan 18

Director - Todd Satogata

  Previous two weeks ()
     - 
  Next two weeks ()
     - 

Alex Bogacz

  Previous two weeks ()
     - 
  Next two weeks ()
     -  

Rui Li

  Previous two weeks ()
     - 
  Next two weeks ()
     -  

Ed Nissen

  Previous two weeks ()
     - 
  Next two weeks ()
     - 

Chris Tennant

  Previous two weeks ()
     - 
  Next two weeks ()
     -  



Accelerator R & D - Yuhong Zhang

 Previous two weeks (Jan 7 - Jan 18)
  - Considered various issues and potential optimization (IR, cooling) for 
    100 GeV CM energy JLEIC
  - Prepared FOA report (cooling simulation, bunched beam experiment
    and coherent electron cooling
  - Prepared talks for Hong Kong High Energy Physics Program
 Next two weeks (Jan 18 - Feb 1)
  - Attend the HK HEP program in the second experiment (in the second week)
  - Make planning of Lijun Mao's visit
  - Planed spring JLEIC collaboration meeting 


Fanglei Lin

 Previous two weeks (Jan 7 - Jan 18)
    - Optimizing the electron collider ring design with PEP-II magnets
    - Working on the storage ring cooler project
    - Miscellaneous: attended the spin transparency test teleconference, attended the Pre-CDR Update meeting, attended
      the JLEIC R&D meeting, attended the Innovative HE Cooling Project Status meeting, attended the Storage Ring Cooler
      meeting, attended JLEIC general meeting
 Next two weeks (Jan 18 - Feb 1)
    - Work on the electron collider ring design with PEP-II magnets
    - Work on the storage ring cooler project
    - Electron spin study using BMAD


Vasiliy Morozov

 Previous two weeks (Jan 7 - Jan 18)
    - Spin transparency experiment: teleconference with collaborators and 
      calculation of the spin response function of RHIC
   - Redesign of ion interaction region for 200 GeV
   - Preparation of the DoE quarterly reports
   - Miscellaneous: postdoc interview, storage ring cooler, collimation
 Next two weeks (Jan 18 - Feb 1)
    - Completion of the DoE quarterly reports
    - Ion IR and collider ring design
    - pCDR update
    - Spin transparency simulations



Amy Sy

Previous two weeks (Jan 7 - Jan 18)
    - Served on the review committee covering the primary and neutrino beamlines 
      as part of the DOE/SC review of LBNF/DUNE at Fermilab. 
    - Wrote and submitted the Beamline portion of the final report.
    - Met with Zack Conway and Brahim Mustapha at ANL to discuss the 
    - JLEIC ion linac. Discussed polarization tracking, H- intrabeam stripping, 
      and stripping chicane design/optimization as paths for further design 
      studies. Working with Brahim to get the latest Trace3D and TRACK 
      inputs for the LEBT and full linac designs.
 Next two weeks (Jan 18 - Feb 1)
    - Continued work on getting the TRACK code running with the latest 
      version of the JLEIC ion linac lattice.
    - First looks at IMP cooling data from December 2018 to start informing 
      Spring 2019 experimental goals.





Computational Physics - Yves Roblin
Yves Roblin

   CEBAF
     - Setting up machine for spring run
     - Developing metrics for machine assessment  
   OTHER
     - Meeting at ODU for machine learning collaboration
     - Defining machine learning problem for possible collaboration


He Zhang

   Previous two weeks (Jan 7 - Jan 18)
     - Development of JSPEC code
     - DeCooling Rate Calculation for JLEIC with New Parameters
     - BeamBeam3D
     - River helped me to repeat Sergei’s deriving of the Bjorken and Mtingwa (BM) formula for the IBS rate calculation 
       using the elliptical integral and to check whether we can extend Sergei’s method on a general case including 
       vertical dispersion and all the missing terms in the oringal BM formula. Our current conclusion is the total rate,
       summation of the rates in all the three directions, can be calculated using Sergei’s formula, as long as we calculate
       the eigenvalue of the I matrix, which is related to the dispersion matrix, numerically. Since the I matrix is a
       symmetric real matrix, its eigenvalues can be calculated using some routine algorithm. We failed to find the explicit
       formula for the rate in each individual direction. To find the formula, we need explicit expression of the
       eigenvalue, which does not exist for a general matrix I. I have an idea of decompose the I matrix into three parts,
       treat them separately and take the summation. But I am not positive this method gives correct or approximate answer. 
   Next two weeks (Jan 18 - Feb 1)
     - The core-tail model for non-Gaussian IBS is in process 
     - Finish space charge effect in friction force calculation
     - Continue documenting JSPEC development
     - Electron beam Space charge effect on friction force calculation is in process. 
     - Cooling Rate Calculation for JLEIC with New Parameters 
     - In the new parameter set of JLEIC, the proton beam emittance and bunch length at the collision energy have been
       increased to mitigate the severe IBS effect. For the 63.3 GeV CM energy case, the collision frequency has been
       changed back to 442 MHz, hence the charges per bunch has been significantly reduced, which helps to achieve a 
       milder IBS effect. The cooling rate and the IBS rate are calculated for both the 44.7 GeV CM energy and the 63.3
       CM energy. 3.2 nC/bunch electrons provide enough cooling for both case. The challenge is still the distribution of
       the cooling. As usual, we have very strong IBS effect in the horizontal direction and very strong cooling effect in
       the vertical and longitudinal direction. 
     - BeamBeam3D 
     - Yu Luo send me the MAD-X lattice file for RHIC at 250 GeV. With Vascily’s help, I am able to generate the truncated
       map using the PTC package in MAD-X. This lattice file does not include any RF cavity, so the 4D truncated maps are
       generated. When tracking up to 1 million turns with a 2nd order map, phase space increase happens. When we perform
       symplectic tracking using our codes, the phase space volume conserves in the 1 million turns. All four kinds of
       generating functions have been tested and they all work as expected. When using the 3rd order truncated map in
       tracking, no noticeable phase space distortion is observed in up to 1 billion turns. This may be because that this
       lattice does not include the high nonlinear sections, such as the interacting region. 
   Others
     - Write for three FOA quarterly reports
     - Work plan in the following two weeks 
     - Finish the core-tail model. 
     - Finish space charge effect in friction force calculation. 
     - Continue documenting JSPEC development.



Diagnostic Development - Kevin Jordan

 Previous two weeks (Jan 7 - Jan 18)
    - LCLS-II; Preparing for cooldown! There were issues with big bellows leaking at the cryocan connection
    - Working on isotope beamline installation & restoration
    - Invited to Program committee for IBIC 2019
    - Invited to Machine Advisory Committee for Canadian Light Source
 Next two weeks (Jan 18 - Feb 1)
    - Cooldown 2 LCLS-II cryomodules
    - Take vacation to install our kinetic art with George Neil in Toronto - [1]


Joe Gubeli

 Previous two weeks (Jan 7 - Jan 18)
    - Worked with several groups in preparing the two LCLS-II CMs for cool down. With a lot of help we were able to
      successfully cool them both down to 4K and collect liquid. 
    - Completed the design of a new x-ray insertable viewer for the Bubble experiment in the 5D line. Most of the parts have
      arrived and I have submitted drawings to the MS for fabrication.
    - I have received the four new chambers for the Arc 7 SLMs, they look really nice. I submitted the chamber support
      drawings for one set to the MS and they are awaiting signatures. Hint-hint.
    - I work with Jianxun Yan on moving a linear motor with EPICS. After getting all of the parameters both in firmware and
      in EPICS correct we were able to move the motor smoothly. A similar motor on a linear slide will be used for
      Radiabeam's high power-high speed wire scanner (HSHPWS) to be installed in the BSY.
 Next two weeks (Jan 18 - Feb 1)
    - Some time on the HWHPWS in preparing a presentation for OPS and in helping Jianxun.
    - Most of the time will be spent in designing the shielding (with a movable wall and target) for the Isotope project. I
      will also need to work some on thermal simulations for this project as well. 
    - I will also be helping with Hot Checkout of the LERF, mainly with the viewers. The video switch partially works and we
      have no trigger so no Beaminizer.



LERF - Steve Benson

  Previous two weeks (Jan 7 - Jan 18)
     - Interviewed one candidate for postdoctoral position
     - Wrote up draft of quarterly report for FOA project
     - Met with SRF to develop harmonic kicker purchasing strategy.
     - Met with seminar committee to get new member and schedule new talks
     - Recruited invited talks for the High Brightness Beams 2019 workshop and the FEL 2019 conference
     - Derived new linac layout for the cooling ERL for Pre-CDR-100.
     - Met with CSI personnel to derive specifications for LERF commissioning specifications
  Next two weeks (Jan 18 - Feb 1)
     - Submit new text for LOD and safety envelope for LERF.
     - Summarize the ERLs for EIC workshop. 
     - Write up budget for Isotope quarterly report.
     - Submit quarterly reports for FOA and Isotope project.
     - Review coherent cooling literature and establish specification baseline