March 4, 2021 Report - Feb 12 - Mar 12
Director - Todd Satogata
Previous two weeks (Feb 15 - Feb 26) - EIC Meetings (management, RF, crab, cryo, cooling, impedance, OPC, IR, R&D) - MGMT Meetings (Leadership/Dept Heads, CASA coffee) - MGMT Review undergraduate traineeship FOA draft; Edy ECA application feedback - MGMT Robust Accel Science/Tech Ecosystem RFI (Feb 25) - ADMIN High energy cooling FOA meeting (Feb 22) - ADMIN IPAC'21 planning (Wednesdays); IR2@EIC workshop planning (Mondays) - USPAS Teaching graduate accelerator physics online (Feb 15-19) - ODU Isurumali advising (GA discussion/debugging) - OPS Meetings (08:00 daily) Next two weeks (Mar 1 - Mar 12) - EIC Meetings (management, RF, crab, cryo, cooling, impedance, OPC, team, R&D) - EIC Lattice workshop (Mar 2) - MGMT Meetings (Leadership/Dept Heads, CASA coffee) - MGMT P&C meet (Mar 4), Robust Accel Science/Tech Ecosystem RFI (Mar 4) - ADMIN IPAC'21 planning (Wednesdays); IR2@EIC workshop planning (Mondays) - ADMIN APS DPB Exec Committee Quarterly (Mar 1) - ADMIN SAF801T training update (at lab, Mar 3) - ADMIN Ryan Bodenstein Mac configuration onboarding - ODU Isurumali/Bhawin python OO tutorials - OPS Meetings (08:00 daily)
Previous two weeks (Feb 1 - Feb 12) - Switchyard strategies for FFA@CEBAF - Setting up GA for linac optics (one-on-one with Isturumali) - Muon acceleration writeup for Muon Collider Study Group. Next two weeks (Feb 15 - Feb 26) - Presentation on switchyard for FFA@CEBAF - Collaboration with Kevin Andre on PERLE end-to-end tracking - PRAB paper review - White Paper on future CEBAF - writeup on FFA energy doubling
Previous two weeks (Feb 15 - Feb 26) - First timesheet submitted - Benefits, etc… selected, updated, etc… - House hunting *finally* successful – Yorktown will be home - Started trying (and not always successfully) to configure Mac for various codes - Optim – tried running on Wine, but might not work on Catalina - Looked into Sirepo to use multiple codes (Zgoubi, Elegant, Mad-X, etc…)
- Free version seems ok, will see if need paid version
- Need to see how to access cluster computer - Met with Vasiliy to brainstorm if/how I could best contribute to EIC - Still requires some thought/discussion, but there are good options - All web-based training completed. Anything on-site (med, rad worker, etc…) has to wait Next two weeks (Mar 1 - Mar 12) - Attendance of 8 AM SAD meetings
- Useful for learning about machine
- Attendance of B-Team Meetings and Procedure Development Meetings
- Made ACE account to access Twiki, etc…
- FFA WG meetings - Installation of programs
- PlayOnMac for Windows programs - MacPorts - OptiM - Gnuplot - Etc… - Trying to get computer set up so I have a steady work flow
- Will attend PERLE meeting
Previous two weeks (Feb 15 - Feb 26) - Developing further understanding of the CBB and transverse instability problem in eSR of EI - Communicating with Riad about CSR impedance in their EDM ring - Attend EIC impedance/instability meetings Next two weeks (Mar 1 - Mar 12) - Read more reference papers on CBB and Landau damping - Doing more calculations for the CBB problem - Attend EIC impedance/instability meetings
Previous two weeks (Feb 15 - Feb 26) - Attended EIC beam-beam and RCS meetings - Submitted ECA application - Gave talk at GlueX collaboration meeting - Took Friday the 19th as a vacation day - Work to finalize DESIREE paper for resubmission, sent draft to coauthors on the 26th Next two weeks (Mar 1 - Mar 12) - Attending Beam-beam and RCS meetings - Working on data analysis of DESIREE data from earlier in February - When my colleagues get back from their spring break we will finalize the paper for resubmission
Previous two weeks (Feb 15 - Feb 26) - AI lunch (web, administrative, public affairs, speaker coordination, etc.) - Attend seminars (OWLE, Accelerator, AI Lunch, etc.) - AIFOA1: discussions on data requirements on new C100 scope mode, understanding implications for future AI work - RADSMA: data exploration, training autoencoder models on data, need to understand how to take into account beam intensity dependent measurements - ARDFML: unsupervised learning and data exploration to understand differences in two different data sets - Work on documenting and submitting invention disclosure Next two weeks (Mar 1 - Mar 12) - AI lunch (web, administrative, public affairs, speaker coordination, etc.) - Attend seminars (OWLE, Accelerator, AI Lunch, etc.) - AIFOA1: generate data to train a binary classifier for fault prediction - RADSMA: investigate impact of preprocessing data on model performance, train models on newly created dataset - ARDFML: understand how to work with deep learning Pytorch model for fault classification, look into impact of bypassed cavities on model performance
Accelerator R & D - Yuhong Zhang
Previous two weeks (Feb 1 - Feb 12) - Next two weeks (Feb 15 - Feb 26) -
Previous (Feb 15 - Feb 26) - More optics measurements - Finish JSPEC improvements if there is some free time - Simulate multipole moments of the commercial corrector coils to be able to predict their detrimental effect, if any - Simulate energy gain of QCM cavities depending on phases using tracking with field maps and accurate geometry. I've done this before but will need to resuscitate it to see if Yan's and Matt's latest calculations make sense. They involve extrapolating the measured energy gain of the combined structure to zero field in one of the cavities to predict the energy gain of the other cavity in isolation. I have some doubts as to the accuracy of that method because the beam becomes so slow that the transit time is likely to change significantly and we don't have enough phase knobs to compensate for it. Interesting question and not complicated. Next (Mar 1 - Mar 12) - HDice run. I wouldn't say it was entirely without issues, but overall we can't complain. Apart from occasional RF trips, the biggest annoyance is that the orbit is not constant enough by itself and you have to resteer it every few hours.
Previous two weeks (Feb 15 - Feb 26) - Continued the work and reported the study results of vertical bumps on the electron polarization in the ESR - Optimizing the optics of the dual energy storage ring cooler - Took one week off - Miscellaneous: attended the EIC eSR polarization meeting, attended the meeting of Development of Innovative High Energy Electron Cooling for an EIC Status Update, attended EIC design team meeting, attended the Storage Ring Cooler meeting, attended the EIC general meeting, attended the EIC hadron polarization meeting, attended the EIC Accelerator Design meeting, attended the weekly positron meetings, attended the SPIN@USPAS2021 Prep Meeting Next two weeks (Mar 1 - Mar 12) - Work on the storage ring cooler project - Work on the teaching material for USPAS 2021 summer section
Previous two weeks (Feb 1 - Feb 12) - Completed all 6 tech notes. Ready to submit into JLab online system. Some of them are already submitted. - I was reading some tech notes and papers in HOM impedance measurements. - I was working to find out the discrepancy in Touschek lifetime calculation in High Energy Ring section. Next two weeks (Feb 15 - Feb 26) - Submitted all 6 tech notes into Je�erson Lab internal system. - I was working with isochronous ring lattice. - Damped energy spread, emittance and the corresponding damping times and IBS times are estimated for the given isochronous ring lattice. IBS times are longer ( order of sec) and damping times are shorter ( order of ms). Dual energy ring design using isochronous arc lattice looks promising.
Previous two weeks (Feb 1 - Feb 12) - EIC 2nd IR work: chromaticity compensation, development of alternative designs with smaller crossing angles, presentations at the IR1/IR2 meeting with BNL and JLab colleagues and at the IR2 meeting with nuclear physicists from JLab and external institutions - Compensation of the detector solenoid effect on crabbing in the electron ring: evaluation of various compensation scenarios, presentation at the Friday IR design meeting - CEBAF FFA arc design: initial designs of adiabatic matching sections using linear and polynomial interpolations - Presentation of a concept of a small ring for electron EDM search at the R&D meeting - Study of RHIC and EIC proton polarization lifetimes due to IBS - Work on a PRAB paper with an expanded scope covering the general concept of polarization control at an integer spin resonance applicable, in particular, to the EIC Next two weeks (Mar 1 - Mar 12) - Continue chromatic compensation and development of alternative designs of the 2nd IR, preparation for the IR1/IR2 meeting on 03/09 and the IR2 workshop the week of 03/15 - Continue exploring schemes for compensation of the detector solenoid effect on crabbing - CEBAF FFA arc design: matching of small-beta optics in the arcs to large-beta optics in the straights - Effect of IBS on the proton polarization lifetime: separate the friction and diffusion terms in IBS and consider the diffusion term only - Preparation for re-submission of the PRAB on polarization control at integer spin resonances - Start work on a paper about small rings for electron EDM search
Previous two weeks (Feb 15 - Feb 26) - Laser particle counter: literature search on micron sized particle delivery. Working with R. Rimmer and G. Ciovati to make space for the test bed in the Test Lab - current plan is to fit into the Structures Lab. - Participating in DOE/SC Review of Mu2e on the Accelerator subcommittee (2/23-2/25). - Biweekly meeting with Omnisensing Photonics on detector prototype progress. Next two weeks (Mar 1 - Mar 12) - Report writing and submission for the DOE/SC Review of Mu2e. - Laser particle counter: continued literature search on micron sized particle delivery. Detector group is working to dismantle the current test setup to reclaim their lab space - the process will be documented, and the group will provide support for reassembly in the new test bed location. Understanding previous data from the commercial (Wexx) particle counter to enable calibration of the prototype counters to be delivered. Vendor is planning to deliver the two prototype counters together in a single site visit due to COVID-19. - Biweekly meeting with Omnisensing Photonics on detector prototype progress.
Computational Physics - Yves Roblin
Previous two weeks (Feb 15 - Feb 26) - UITF review - Moller collaboration meetings - Moller beamline optimization - Procedural development for injector 0R05 beam characterization - Procedural development for Spreader/Recombiner setup - Injector ORFP, main machine ORFP development. - FFA meetings - Positron proposals meeting - BTeam coordination and meetings Next two weeks (Mar 1 - Mar 12) - Moller beamline optimization - Procedural development for injector 0R05 beam characterization - Procedural development for Spreader/Recombiner setup - Injector ORFP, main machine ORFP development. - FFA meetings - Positron proposals meeting - BTeam coordination and meetings - Prepare for talk for HALLA/HALLC interface meeting (3/17) - Prepare for talk on positron use for future exp in HallA/C (3/11) - Developing a G4toELEGANT interface - Investigate the possibility of carrying out experiment in CEBAF to simulate transport of high emittance beam (such as positrons) using a target to degrade the e- beam.
Previous two weeks (Jan 18 - Jan 29) - t2nd IR integration to the full lattice for hadrons - Chromaicity correction for the HSR with two IRs - Hall A beam line ptimization - Looking in to switch yard for CEBAF FF Next two weeks (Feb 1 - Feb 12) - Chromaticity correction for the HSR continue - hall A beam line reconfiguration tunability study - low energy optimization for the 1st IR with DFD and DDF configurations
Previous two weeks (Jan 18 - Jan 29) - We are working on study the image reconstruction of collision beams based on Poisson's solution of equation and trying to solve the retarded potentials based on results obtained in 1995 by R.A. Kruger. - We are also working on optimizing CASA Beam-Beam. Next two weeks (Feb 1 - Feb 12) - Continue working on CASA Beam-Beam.
Previous two weeks (Jan 18 - Jan 29) - Completed creating 10-pass north linac files with 750 MeV energy gain per pass with different phase advances (900,1200,600) - Compared OptiM and Elegant output for 600 FODO linac with 1.1 GeV gain. - Elegant files were obtained from Dr. Roblin, and there’s a pretty good agreement in both results - But inj+NL file had deviations due to weak cavity-end focusing - Tried to write a conversion script from OptiM to Elegant, but it’s complicated, so decided to convert OptiM to Madx, then convert Madx to Elegant format. Next two weeks (Feb 1 - Feb 12) - Start writing the GA code.
Previous two weeks (Feb 12 - Feb 26) - UITF - Prepare for optics measurements after the next HDIce run (testplans, etc) - Verify element locations in the deck vs beamline walkdown - AIPINJ - Develop testplan for 130keV matching for various wien filter configurations. - Finalize elegant deck vs. the latest songsheet. - HLA - rayTrace data collector and analyzer debug and new features - cs2sdds, ced2elegant, qsUtility tweaks - OPS - Continue with procedure updates, particularly aperture scan - Attend Accelerator seminars, AI Lunch Series talks, etc - Attend 0800, BTeam, AIPINJ, UITF, AI FOA meetings. Next two weeks (Mar 1 - Mar 12) - UITF - Fixed qsUtility templates for upcoming measurements - Made further tweaks to the elegant deck and imported into UED Optics workspace - ced2elegant bugfixes for UITF - AIPINJ - Verified latest elegant deck vs latest songsheet and imported into InjUpgrade workspace - Created qsUtility templates for 130keV measurements - AI - Developing pyTorch model for the C100 fault dataset to further learn pyTorch - Met with Jon Edelen from Radiasoft - Attended Software and Computing Roundtable on Best Practices for Software Projects - Completed GEN101 Annual Standards of Conduct training - Continue work on Aperture Scan procedure - Attended Accelerator Seminars, AI Lunch Series talks - Attended 0800, 1330, AIPINJ, BTeam, AI FOA, Positron, and UITF meetings.
Previous two weeks (Feb 1 - Feb 12) - Next two weeks (Feb 15 - Feb 26) -
Diagnostic Development - Kevin Jordan
Previous two weeks (Feb 15 - Feb 26) - I was program deputy - Wrapping up Isotope project - Working on magnetron project - Preparing for IBIC scientific program committee Next two weeks (Mar 1 - Mar 12) - Updated Faraday Cup website - Worked on programing for magnetron controls - Provided controls design for injector (Marcy) turbo pump cart interlocks - Spent some time preparing for IBIC 2021 conference program
Previous two weeks (Feb 1 - Feb 12) - Isotopes – Work on 50kW design - ARDDOT - Completed new design for the ARC 1 & ARC 2 SLMs. This design places the cameras over the dipole. With the dipole steel and a few 30% boron poly bricks we should be able reduce the radiation on the camera and have it last a little longer. Due to the low head clearance in the upper ARC a creative modification of a turning mirror was made that should allow for remote X&Y axis steering. Everything has been ordered except the 3mm slits and the borated poly shielding. Those should go on order today. Next two weeks (Feb 15 - Feb 26) - Isotopes – Work on the 50kW design - ARDDOT – Continue working on diagnostics upgrade to CEBAF (simulations, engineering and designs).
Previous two weeks (Feb 1 - Feb 12) - Next two weeks (Feb 15 - Feb 26) -
LERF - Steve Benson
Previous two weeks (Feb 1 - Feb 12) - Reviewed two SBIRs from DOE-NP. - Put together the budget for the Isotope quarterly. - Analyzed split linac compression scheme for uB CeC project - Put together JLAMP II design study - Went over old CDR appendix looking for potential lethal flaws in the low energy cooler design. None found. Next two weeks (Feb 15 - Feb 26) - Attend the Wastewater irradiation ERR - Edit and help submit tech note on JSPEC - Review some more papers - Rewrite and submit the LOSP for User Lab 4 - Set up training for Drive Laser Enclosure LPSS - Derive specifications for JLAMP II
Previous two weeks (Feb 1 - Feb 12) - EIC: again, not much. I need to find a topic I can get my teeth into. That may have to wait until the JLab deliverables are defined. - Isotopes:We continue to study the foil samples that were irradiated (led by Adam Stavola), and there are still discrepancies that we do not fully understand. Our two NMT students, Geno and Robert, have received the data and are setting up a different software package to cross-compare. In a phone call with our funding manager, Ethan Balkin, I learned that there will be two FOAs coming out this summer; I assume one for labs and a companion one for Universities. This breaks the pattern of an FOA every two years, and thinking back on the Ethan’s careful wording, I think he has not awarded as many proposals as usual to provide funding for the intermediate year. If so, we were only half-punished! The Reviews were helpful and we will work on strengthening the proposal. I have made a request to VCU to have their hot-cell transferred to us - I give it about a 25% probability, but I felt I should ask. Drew offered us use of a lead-shielded room on the third floor of the ARC which is currently being used by Dillon, but will be vacated as part of the ARC refurbishment. That would still leave us with a chemical separation problem, but one thing at a time. - ERLsI have spent quite a lot of time developing spreadsheets showing the various aspects of an ERL and the projects that currently hold the record, the approved projects and which aspects they will push the limits, and the proposed project (PERLE) and what it would achieve. In parallel, I am collecting up what LHeC would need to compare with the various records to identify gaps. Of interest, the JLab FEL still holds the beam power record, CEBAF 1-turn has the energy record, and CEBAF 5-turn will have both the energy record and the number of turns record. It may also have the record for highest current in a multi-turn ERL for a while. Not bad for a lab that has turned its back on ERLs! Next two weeks (Feb 15 - Feb 26) - Isotopes:There has been considerable progress on understanding the results of the isotopically purified gallium. The students at NMT, with the very active participation of Doug Wells who is a real expert at this, have re-analyzed all of the data. They managed to show that some of the data is bogus and should be ejected; the rest agrees well with the results by Adam Stavola. This work will continue over the next two weeks to include propagating the errors to get a final error estimate. We are all feeling much more confident now! We are waiting for the vacuum group to have time to remove the window for post mortem (actually we hope it isn’t dead!) as we should ship it back to ANL if it is still OK. - ERLS:I have made great progress on the spreadsheet, requesting updates from all of the ERLs and already receiving replies from most. I am now mulling over which are the key parameters that should be put on the 3rd tab of spreadsheet showing how we are, or will be, progressing towards verification of these key parameters. For your reading pleasure, I am attaching the spreadsheet so far, comments on format and content are more than welcome. - I have been approached by VCU Nuclear Engineering Group to participate in a request for student funding on Isotope studies. The other collaborators are Virginia Union University (an HBCU) and Sweet Briar College (an all women’s university). - I have also been on a videoconference with Achille Stocchi to try and unblock the French bureaucracy on the PERLE ICRADA. All I get is that there is no problem, and a promised date (February 26) when we will have the PERLE Collaboration Meeting. However, it is the French spring holiday season (usually devoted to skiing, but the ski resorts are all closed). Getting anything out of French bureaucracy in a vacation period seems doomed to failure. But we will see. . . . . - I initiated an email chain on the availability of an American SRF cavity supplier, proposing that the Department of Energy, Office of Accelerator R&D and Production pay the upcoming projects (including the EIC) to buy American, including taking on some of the risk. I see that there is now an RFI on this.