Oct 2019 Report - Oct 14 - Nov 8
Director - Todd Satogata
Previous two weeks (Oct 14 - Oct 25) - ADMIN 12 GeV PRAB paper planning - ADMIN JLAAC review (Oct 22-24) - ADMIN FY20 AWP planning - ADMIN Xelera SBIR support planning - JLEIC/ER@CEBAF JLAAC dry runs and planning - JLEIC FOA quarterly report planning - ODU PHYS854 teaching (with Geoff Krafft) - OPS Walk Hall D line, run readiness evaluation - OPS Pre-brief half-day operator meeting (Oct 21) - VACATION Oct 14, half-day Oct 25 Next two weeks (Oct 28 - Nov 8) - ADMIN 12 GeV PRAB paper planning - ADMIN FY20 AWP planning - ADMIN Review PRAB paper - ADMIN Recommendation letters (Deepsana Shahi, Mike Lafky) - ER@CEBAF post-JLAAC planning for summer 2020 chicane install - JACOW Team Meeting travel preparation - IPAC'20 SPC/3 Meeting travel preparation - ODU PHYS854 teaching (with Geoff Krafft)
Previous two weeks (Oct 14 - Oct 25) - Finishing a CDR chapter on the LHeC ERL design - PRAB paper review - Attending nuSTORM mtg at CERN - Attending Workshop on the LHeC, FCC-eh and PERLE, Chavannes-de-Bogis Next two weeks (Oct 28 - Nov 8) - Alternative lattice for the LHeC ERL - Invention disclosures review - Appraisals - Vac
Previous two weeks (Oct 14 - Oct 25) - Discuss/explore Hassinski solution and Robinson instability with Bob Warnock (SLAC) and Marco Venturini (LBL) - Participate in the ALS-U impedance meeting and discussions - Schedule/plan the next JLEIC impedance meeting and potential talks - Assist ALS-U people to teach JLAB/ODU people on broadband impedance modeling using CST Next two weeks (Oct 28 - Nov 8) - Prepare and present JLEIC impedance studies at JLEIC R&D meeting - Participate multi-lab (LBL/SLAC/APS/NSLS-II) monthly seminar on collective effects in electron storage rings (I'm asked to present the next monthly seminar on collective effects in JLEIC) - Continue my collaboration with ALS-U and SLAC on impedance and instability - Finish writing up the technote on spectra for uneven bunch fill
Previous two weeks (Oct 14 - Oct 25) - Did some work with the LEB, trying to see if I can get more space in the lattice - Mostly coordinated with the people at DESIREE for the measurements they made for me on October 21, and 22. - Analyzed the data they sent me and worked to finalize the proposal for beam time which is due the 31st. Next two weeks (Oct 28 - Nov 8) - I will submit the proposal - Determine priorities for my work in the next two weeks.
Previous two weeks (Oct 14 - Oct 25) - Accelerator Advisory Committee meeting (slide preparation/dry-run/talk) - Employee self-evaluations - Wrote draft of ML section for CEBAF PRAB paper - Preparing slides for Accelerator Seminar (11/14) - Participated in initial telecon about using ML for magnetized beams (with ANL, SLAC) - Start outline, initial sections for draft of SRF classifier paper (to be submitted for peer-review later in the year) Next two weeks (Oct 28 - Nov 8) - Finish Accelerator Seminar talk - Continue work on SRF classifier paper - CeC effort starting up in earnest again (?) - JLEIC cooler effort ramping up again
Accelerator R & D - Yuhong Zhang
Previous two weeks (Oct 14 - Oct 25) - Next two weeks (Oct 28 - Nov 8) - Attend the Accelerator R&D PI Exchange Meeting
Previous (Oct 14 - Oct 25) - Read up on electron cooling theory (but didn't get very far) - Got Radworker I certification - Cleaned up lattice plotting code - Contribution to DOE quarterly report on electron cooling Next (Oct 28 - Nov 8) - More electron cooling and collective effects theory - Become familiar with Kevin's work on electronics for the IMP experiment
Previous two weeks (Oct 14 - Oct 25) - Worked on the storage ring cooler project, and provided a quarterly report - Revisiting electron top-off injection scheme for JLEIC - Miscellaneous: attended JLEIC R&D meeting, discussed introducing computation of DK depolarization rate using Zgoubi with Radiasoft collages, attended JLEIC general meeting, finished employee appraisal. Next two weeks (Oct 28 - Nov 8) - Work on updating the interaction region design - Work on the storage ring cooler project
Previous two weeks (Oct 14 - Oct 25) - Working on longitudinal dynamics and stability in two energy storage ring cooler. - Working on simulation to get the longer bunch length in the cooling section. - Introducing harmonic cavity and bunching cavity in two energy ring to get the longer bunch length in the cooling section. Bunching cavity provides the focusing. - Results shows that we should go with shorter bunch length ≈ 1 cm. Next two weeks (Oct 28 - Nov 8) - Will be working on longitudinal dynamics and stability in two energy storage ring. - Making clear presentation based on calculation and simulations for future plan. - Meeting with Dr Krafft for more discussion. - Should go with chirping and de-chirping along with other scheme in two energy ring. - Working with new lattice for two energy storage ring.(Dr Fanglei Lin has de-signed the new lattice).
Previous two weeks (Oct 14 - Nov 8) - Optimization of the IBS rate in the ion collider ring -IR design: modeling of the detector region in GEMC and GEANT4 -Preparation for and attendance of the EIC collaboration meeting Next two weeks (Oct 14 - Oct 25) - Attending APS DNP meeting - Preparation for JLAAC meeting - Preparation for EINN meeting
Previous two weeks (Oct 14 - Oct 25): - DOE pre-review teleconference for planning for LBNF/DUNE review. - Continued work on heavy ion stripping chicane design in TRACK and PyORBIT. - Continued work on TRACK vs PyORBIT comparison for linac simulations. Compared longitudinal phase behavior at the transition between QWR and HWR sections in TRACK to the PyORBIT case, and will need to create a JLEIC-specific module to properly evaluate this parameter, rather than relying on the SNS linac bunch module that is currently being used. Currently refining the RF cavity parameters in PyORBIT to better match the TRACK simulations, including working with multiple RF gaps per cavity for better approximation of field maps used in TRACK. Next two weeks (Oct 28 - Nov 8) - Participating in the DOE independent project review of LBNF/DUNE. - Continued work on ion linac simulations.
Computational Physics - Yves Roblin
Previous two weeks (Oct 14 - Oct 25) - CEBAF: - RAR reports - Bteam preparation/meetings - AI meetings - Optics for upcoming run - RF Pit meeting - Walking the beam line BSY/HALLA to reconcile with CED - Group meeting - JLEIC: - Beam-Beam meetings with Isurumali - Preparing for PI meeting - 4th quarter report prep for FOA - OTHER - AWP preparations - Evaluations - SLLP meetings/prepare for presentation in november Next two weeks (Oct 28 - Nov 8) - Complete evaluations - Prepare optics for startup CEBAF - AI workshop local organizing committee meetings
Previous two weeks (Oct 14 - Oct 25) - Next step of the orbit correction - correcting the beta function distortion - Investigating different multipole correction schemes. - Jlab contribution to the quarterly report Next two weeks (Oct 28 - Nov 8) - Add ion quad data in to DA studies (from last week) - Continue to correct beta function distortion - Continue to investigate different Multipole corrector schemes
Previous two weeks (Oct 14 - Oct 25) - Transparent Spin Mode using Zgoubi - OPERA field maps with snakes’ parallel (the snake currents were varied using a fitting procedure to adjust the snake axis to 0°) has been put into RHIC’s lattice. After precisely adjusting the total bending angle of all of the dipole magnets to sum up to 2π, we tried to realize the spin transparent in a simulation for the RHIC’s configuration: all of the spin components are constant from turn to turn with a good numerical precision. After precisely adjusting, the spin resonance-strength was much smaller than before. Again, we also introduced random transverse quadrupole misalignments Δ𝑦 and dipole roll Δ𝜑 with rms magnitudes that provide 0.2 mm vertical closed orbit distortion ac-cording to a statistical model prediction. Averaging over all seeds gives a rms vertical closed orbit excursion of about 0.18~mm. - CASA Beam-Beam package - We are working on coding to convert the symbolic expressions to python to solve nonlinear equations。 Next two weeks (Oct 28 - Nov 8) - Continue working on EIC project
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Previous two weeks (Oct 14 - Oct 25) - Submitted ATLis for MultiWire testing. - qsUtility improvements. - Submitted ATLis for 6MeV matching. - Completed 130keV emittance measurements. - Discussed handing some of my non-CASA software tools back to HLA with Michele. - Discussed future plans for rfHealthCheck with Clyde. - Generated elegant layout for Injector upgrade. - Had a CED workspace created for the Injector upgrade - Setup computer with Keras and TensorFlow to start exploring ML. - Attended BTeam, 12GeV paper, Injector Upgrade, and AI lunch meetings. Next two weeks (Oct 28 - Nov 8) - Analyze 130keV emittance measurement data. - Continue work on assigned sections for the 12GeV PRAB paper. - Configure optics for the Injector upgrade elegant deck. - Start populating the Injector upgrade CED workspace. - Continue exploring ML with Keras and TensorFlow. - Finish QTSnyder upgrade and write ATLis for testing - Attend BTeam, 12GeV paper, Injector Upgrade, and AI lunch meetings.
Previous two weeks (Oct 14 - Oct 25) - JSPEC - Updated the TWISS parameter loading function to improve the flexibility. Now the data column MUX and MUY are not required since they are not used in IBS calculation. TWISS parameter tables missing DY nad DPY are acceptable since in many cases the ring does not have vertical dispersion. I’m also adding the function of calculation and output the IBS contribution elememt by element to the UI. The other relatively large change in progress is revising the cooling rate calculation and the particle model, so that the average cooling rate for varying electron bunch can be used in the particle model. - Beam beam effect - Help Yun Luo to set up and test the simulations using BB3D with high order map tracking or symplectic tracking. Find and fixed a bug in the TPSA lib which happens when all the elements are zero in a DA vector and caused an error in symplectic tracking using the 2nd kind of generating function. Next two weeks (Oct 28 - Nov 8) - Start working on JSPEC benchmarking with Lanzhou experimental data. - Finish a few changes of JSPEC
Diagnostic Development - Kevin Jordan
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Previous two weeks (Oct 14 - Oct 25) - Isotope Experiment – Work on completing the shielding and instrumentation for the experiment. Address items that comes out of the review - Halo monitor – Finish aligning the camera/fiber optics and install it on LDRDS Next two weeks (Oct 28 - Nov 8) -
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LERF - Steve Benson
Previous two weeks (Oct 14 - Oct 25) - Submitted proposal for change of SOW for the Cooling FOA for IMP work - Prepared quarterly report for Strong Cooling FOA project - Prepared budget for isotope project quarterly and assist PI in submitting the report. - Prepared and gave talk on LERF Activities at the JLAAC meeting. - Set up seminars by Chris Tennant, Pavel Chevtsov, and Michael Famiano - Discussed non-beam hazards and Lock,Tag&Try issues with Laser Safety personnel. - Reviewed Class 3R laser status int he LERF and disabled several unused lasers. - Reviewed Isotope program and run plans with Operations Staff - Prepared AWPs for Cooling FOA project and Isotope production program. Next two weeks (Oct 28 - Nov 8) - Certify User Lab 4 in the LERF - Submit papers for ERL workshop - Assist in run to the 1G dump with CW beam. - Work on punch list items for the Isotope ERR - Get kicker coils for RF merge test completed - Prepare slides for and the attend the NP Accelerator R&D PI Exchange meeting in Gaithersburg MD.
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