2021-9-2-LeadershipReports

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September 2, 2021 Report - Aug 16 - Sept 10 Director - Todd Satogata

Todd Satogata

  Previous two weeks (Aug 2 - Aug 13) 
     - VACATION (Aug 2-6), Med leave (AM Aug 12, dentist)
     - EIC Meetings (management, RF, crab, cooling, impedance, team, R&D, beam-beam)
     - EIC Meetings (second IR), resource planning (critical hires)
     - MGMT Meetings (Leadership/Dept Heads, CASA coffee)
     - OPS Meetings (08:00 daily, BTeam; optics on call)
  Next two weeks (Aug 16 - Aug 27) 
     - EIC Meetings (management, RF, crab, cooling, impedance, team, R&D, beam-beam)
     - EIC Meetings (second IR), resource planning (critical hires), interview (Aug 19)
     - EIC Develop work plans for Vasiliy/Fanglei, WBS for ERL
     - EIC AI@EIC talk planning (with Chris Tennant)
     - EIC C^3 Linac discussions (Mei Bai, SLAC)
     - MGMT Meetings (Leadership/Dept Heads, CASA coffee)
     - OPS Meetings (08:00 daily, BTeam; optics on call), MCC (Fri Aug 20)
     - ADMIN PSsQCD@EIC organizing committee meetings, training updates
     - ODU Physics Dept Faculty Meet (Aug 24)
     - VACATION (Aug 27), Med leave (part of Aug 19)




Alex Bogacz

  Previous two weeks (Aug 2 - Aug 13) 
     - Summer student guidance
     - Writing a PRAB paper on PERLE
     - Coordinating FFA@CEBAF
     - Writing letters of recommendation  
     - Writeup for ERL Roadmap Panel
     - Vacation 
  Next two weeks (Aug 16 - Aug 27)
     - One-on-one with Ryan on CEBAF Optics
     - Writing a paper on PERLE 
     - MED day
     - Times accounting training
     - FFA@CEBAF design
     - Paper review





Ryan Bodenstein

  Previous two weeks (Aug 2 - Aug 13) 
     - Operations meetings
     - B-Team meetings
     - Summer Student guidance
           - Talk preparation and attendance
           - Poster preparation and attendance
           - Paper preparation
     - FFA@CEBAF collab work
     - Positron/FFA liaison work
     - PhD Student guidance 
  Next two weeks (Aug 16 - Aug 27)
     - Operations meetings
     - B-Team meetings
     - FFA@CEBAF collab work
     - Positron/FFA liaison work
     - PhD Student guidance
     - Optics On Call
           - Assistance/observation of OPS during setup






Rui Li

  Previous two weeks (Aug 2 - Aug 13)
     - Collective effects in Riad, Vasiliy, Slava's EDM proposal
           - send Riad email about my understanding of the issue and approach needed. I still need to get into more  details of this problem
     - CBB and TCBI
           - Had some deeper looks at the effect of working points on the interplay of CBB/TCBI. Interesting behaviors show up when the two coherent spectral bands collide/overlap.
           - Finished writing up a summary of my recent tune-scan results and sent it to Mike Blaskiewicz
           - Got some ideas about how to eliminate the artificial tune dependence of the TCBI growth rate resulted from the over-simplification of the model in our study
           - Still need to think through about the effect of nonlinearity of beam-beam on the correct modeling of the multi-bunch coupling via the long-range transverse wake.
  Next two weeks (Aug 16 - Aug 27) 
     - CBB and TCBI
           - To understand the validity range of our numerical modeling, and gain better understanding of the modeling of beam-beam nonlinearity on the multibunch coupling, I start to perform the Vlasov analysis of the problem
           - Did the Vlasov analysis of the TCBI, and got results agree with theory






Edy Nissen

   Previous two weeks (Aug 2 - Aug 13)
     - Optics on call 8/3-8/10
     - DODGE paper submitted to PRAB
     - Continued experimentation with WARP
     - Took Aug 12 and 13 as vacation
     - Attended BTeam Meetings
   Next two weeks (Aug 16 - Aug 27)
     - Beam-beam Task force meeting
     - Attend BTeam Meetings
     - Determining NIM requirements for DODGE paper
     - Go back to working with WARP





Chris Tennant

   Previous two weeks (Aug 2 - Aug 13)
     - 
   Next two weeks (Aug 16 - Aug 27)
     - 






Accelerator R & D - Yuhong Zhang

Yuhong Zhang

  Previous two weeks (Aug 2 - Aug 13)
     - 
   Next two weeks (Aug 16 - Aug 27)
     -  



Bhawin Dhital

   Previous two weeks (Aug 2 - Aug 13)
     - 
   Next two weeks (Aug 16 - Aug 27)
     - 




Amy Sy

   Previous two weeks (Aug 2 - Aug 13)
     - Laser particle counter: Continued system debugging, optimization, and data analysis to better understand operational modes and to obtain both phase and amplitude signals for event confirmation. Working on implementing various signal processing methods such as dynamic threshold or dynamic windowing to reduce false positive event rates. Working with vendor on acceptance testing specifications for the complete 24 channel system. Spare pump drop has been oriented vertically to be able to drop particles through the beam pipe - working on data analysis of events consisting of sand particles dropped through the active area.
     - Preliminary discussion with J. Grames on possible simulations of ionization by-products in a cryomodule using GPT to facilitate gas bremsstrahlung experiments in CEBAF..
   Next two weeks (Aug 16 - Aug 27)
     - Laser particle counter: Continued system debugging, optimization, and data analysis to better understand the operational modes and system variables that can be adjusted for best performance. Vendor visit on 8/19 to start pass/fail test, with current goal to obtain over 90% event detection for 80 um wire sweeping events - still discussing with the vendor on acceptable specifications on false positive event rates. Prior to and during the 8/19 visit, channels 0 and 1 could not be adjusted to give clean event signals using methods that improved SNR for other channels - the sensors for these channels are part of the initial batch and the vendor has decided to replace these sensors before continuing with pass/fail testing. The vendor has also returned the passive optical front end to their labs for fiber connector polishing. Analysis of data taken on 8/19 (wire sweeps and dropping of 50 um aluminum oxide particles) will continue, along with refinement of offline processing algorithms and methods. Will likely give an update on laser particle counter system status to the Detector Group in mid-September.










Computational Physics - Yves Roblin
Yves Roblin

   Previous two weeks (Aug 2 - Aug 13)
     - 
   Next two weeks (Aug 16 - Aug 27)
     - 






Randi Gamage

   Previous two weeks (Aug 2 - Aug 13)
     - 
   Next two weeks (Aug 16 - Aug 27)
     - 


River Huang

   Previous two weeks (Aug 2 - Aug 13)
     - EIC Beam-Beam project: using CASA-BeamBeam code to calculate the transverse normalized emittance growth due to RF noise for SPS ring and EIC hadron ring.
   Next two weeks (Aug 16 - Aug 27)
     - EIC Beam-Beam project: we calculated the transverse normalized emittance growth due to RF noise for SPS ring and did the benchmark: the results show that CASA-BeamBeam results matched the CERN’s simulation results very well.




Isurumali Neththikumara

   Previous two weeks (Aug 16 - Aug 27)
     - Refine the new objective functions based on mean squared error and moving average calculation and test them.
     - Prepare a presentation for the Annual Review.
   Next two weeks (Aug 30 - Sept 10)
     - Did my annual review which is a requirement in ODU graduate program.
     - Obtained better optics with new objectives for the 14-variable search.
     - Continue the search process with 16 variable.






Dennis Turner

   Previous two weeks (Aug 2 - Aug 13)
     - HLA
         - rayTrace bugfixes
         - elegant2ced tweaks
         - eDT tweaks
         - lem2sdds tweaks
         - Fixes for missing 1L26
    - Optics On-Call
    - UITF
        - Provided snapfile scaled for 180kV gun
        - Updated deck and UED for 180kV gun and wastewater experiment
        - Stood operator training shifts 
        - Completed web-based trainings for UITF operator qualification
    - rayTrace
        - Further data collector testing during beam studies
    - Ops
        - Helped to generate report from MCC KeyWatcher for the recent access violation
    - Requested HLA to create "MatchMarker" element to be used for matching to true design
    - Completed Respectful Workspace training
    - Attended 0800, BTeam, AI FOA, UITF meetings
   Next two weeks (Aug 30 - Sept 10)
     - -HLA
         - Modified ArcSteer to load machine settings.  Had to roll back due to weirdness.  Need to investigate.
         - Wrote documentation for rayTrace_dataCollector and released to production
         - Helped troubleshoot rfCavHistory
         - rayTrace tweaks
    - Explored doing multiple spreader matches and choosing the best four quads
    - Optics On-Call
    - UITF
         - Performed emittance measurement with MQZK203 and ITVK203.  Had to measure and fix quad position in the deck and UED.
         - Postprocess MQZK203 emittance measurement data
     - rayTrace
         - Performed rayTrace from Injector to 1R.
         - Found shortcomings in the rayTrace analyzer to be fixed.
     - Attended 0745, 0800, BTeam, AI FOA, UITF meetings




He Zhang

   Previous two weeks (Aug 16 - Aug 27)
     - Submitted the TPSA lib to JOSS and revised a little for their automatic checking result. 
     - Add a few functions for memory management to the TPSA lib.  Replaced the old TPSA lib in the FMM code with the new one. Unfortunately, no improvement on efficiency although easier for coding.   
   Next two weeks (Aug 30- Sept 10)
     - Finish and submit the FMM paper. 
     - Revisit and finish the non-Gaussian IBS model in JSPEC.  





Diagnostic Development - Kevin Jordan

Kevin Jordan

  Previous two weeks (Aug 2 - Aug 13)
     - 
   Next two weeks (Aug 16 - Aug 27)
     - 



Joe Gubeli

   Previous two weeks (Aug 2 - Aug 13)
     - Isotopes –
     - ARDDOT -  
   Next two weeks (Aug 16 - Aug 27)
     - Isotopes – 
     - ARDDOT –


Michael Tiefenback

   Previous two weeks (Aug 2 - Aug 13)
     - 
   Next two weeks (Aug 16 - Aug 27)
     - 



CASA Fellows
LERF - Steve Benson

   Previous two weeks (Aug 2 - Aug 13)
     - Finished and submitted PRAB and PoP paper reviews.
     - Reviewed C. Hernandez-Garcia paper for IEEE.
     - Reviewed NIM A paper on FAST magnetic beam transport before submission
     - Helped to derive required resources for ERL project
     - Analyzed new coherent photon production method (Angular Dispersion induced Microbunching). Presented analysis at working group meeting.
     - Went over Export Analysis with JLab lawyers. Agreed to contact optics vendors.
     - Amended LOSP for LERF vault to resolve CATs item. Sent out draft for review.
   Next two weeks (Aug 16 - Aug 27)
     - Attend SBIR/STTR update meeting.
     - Interview SSII candidate and submit evaluation.
     - Derive draft ERL project outline for the EIC
     - Continue developing longitudinal model for CeC ERL on LiTrack
     - Finish up harmonic RF tech. note.
     - Track down pressure systems / design documentation for gun HVPSs
     - Complete and submit new LOSP for LERF vault.
     - Rewrite and submit the LOSP for User Lab 4





Andrew Hutton

   Previous two weeks (Aug 16 - Aug 27) 
     - Isotopes:  Loida, Adam and I are continuing with the expanded search for medically interesting isotopes.  I have written up the first part, which enabled me to check on the computer output and analyze the results in detail.  This resulted in removing four of the new pathways for different reasons.  Adam Stavola is now working on getting Lila’s code working and will help to integrate it with Loida’s code.  I have prepared a set of input parameters adapted to the cases of gamma, neutron, proton and deuteron.  I am still looking for accelerators that use alpha particles for producing isotopes.  The only example I have found is the 540 MeV cyclotron at TRIUMF.  Since the DOE-ONP Isotope program is not funding this, I guess I can analyze a “foreign” accelerator in the interstate’s of completeness.        
     - ERL: The ERL sub-Panel and ERL Roadmap panel is ramp up activity after the summer vacations.  At the second meeting of the ERL sub-Panel, , Kaoru Yokoya presented a first look at the luminosity of the ERLC.  He was quickly interrupted by Reinhard Brinkman who pointed out that we cannot consider the linac and damping rings separately.  Because the electrons and positrons are returned to the damping rings, damped over 400 turns, and then reused, we have to consider the whole facility as a kind of loop.  So we need the momentum compaction factor, transverse tune, chromaticity, synchrotron frequency, etc.  I wrote an email to Valery Telnov, got it approved by the members of the sub-Panel, and sent it to Telnov asking if he had considered this and asking if he could supply any additional input.    
     - Lila and Loida: I am advising both of them for their graduate studies.  Lila wishes to pursue medical physics and I put her in contact with Thia Keppel and Ethan Balkin (who was a medical physicist at the University of Washington before moving to the DOE-ONP Isotope program).  Loida wishes to pursue accelerator physics, and I am helping her choose a University.  Coming from Puerto Rico, she hates the cold, which does limit her options!                          
   Next two weeks (Aug 30 - Sept 10)  
     - Isotopes: Loida has completed a run with 20 MeV protons - the typical energy of a hospital cyclotron.  She has identified two known production pathways for 18Fluorine and 119Antimony.  This confirms that the program is performing correctly.  More interestingly, she identify three other possibilities: 55Cobalt, 76Bromine and another pathway to 119Antimony.  I am working on looking at the other radioisotopes that are co-produced and which could be dangerous.  The 56Fe (p,2n) 55Co reaction seems clean with a small production of two Manganese isotopes that should be easily separable chemically.  The 76Bromine is more complicated as there are many byproducts and this pathway may not be viable unless the target 76Selenium is isotopically purified before irradiation.  There are similar problems with the alternative pathway for 119Antimony, which may or may not make it unacceptable.  Loida is now working on getting the neutron production working.  The goal is still to identify pathways for all the medically interesting isotopes called out by the DOE Isotope program.      
     - ERL: The sub-Panel has has another meeting and will now move back to weekly meetings for the next month to finish.  We already have ~20 pages written and will probably expand to ~30 pages before we are finished.  The short answer is that neither is in a state that it could replace the ILC or the FCC-ee.  We will come up with a list of R&D items that should be pursued to make these ideas achievable.  For me, the most important is operation of the cryomodules at 4.5K to reduce the cryogenic plant construction cost as well as the power requirement.  This should be an area where Jefferson Lab invests heavily - the pay-back would be enormous as it would also enable every university to envisage having a small superconducting accelerator for Compton back scatter, etc.       
     - SuperKEKB Review: this was help remotely September 2, 3 with the closeout September 6.  This was four hours of presentations, but ht long version of the talks had been posted a few days earlier.  They have obtained a new luminosity record (~50% above their KEKB record) but have a lot of problems with beam blow-up, backgrounds, catastrophic beam loss (damaged collimators and detector modules) and a variety of problems that are intertwined which makes understanding extremely hard - for them as well as the committee.  They have created an international task force to address some of the problems; we recommended that they expanded the number of topics.  Many labs have people who have agreed to help.  They are mostly designing the next generation colliders and SuperKEKB gives them a chance to hone their skills, benchmark their codes and improve the design of their own machine.  We would be wise to do the same with the EIC.