RC Meeting, Sunday, September 5, 2021
From HallCWiki
Contents
RC Meeting Information
RC Daily Meeting at 3:00 PM, (remote)
- Bluejeans remote connection information:
To join the Meeting: https://bluejeans.com/861439920 To join via Room System: Video Conferencing System: bjn.vc -or-199.48.152.152 Meeting ID : 861439920 To join via phone : 1) Dial: +1.408.740.7256 (US (San Jose)) +1.888.240.2560 (US Toll Free)) +1.408.317.9253 (US (Primary, San Jose)) (see all numbers - http://bluejeans.com/numbers) 2) Enter Conference ID : 861439920
Useful Links
Accelerator Status
- As of yesterday on track to send beam into the hall today during swing for optics checks
- As of yesterday Ops plans to have the hall swept mid-day --> checked with the PD this morning, also with Mike Aiken: sweeping may happen mid-day or later, whenever is convenient for Ops (I left it up to them)
- Overnight: Ops had problems with beam steering at ARC 9; vertical dispersion too large
- This morning: Mike Aiken and crew working on it: https://logbooks.jlab.org/entry/3901217
- Ops HCO list: https://logbooks.jlab.org/entry/3901128
Hall Status
- All checklists done by Friday, Walter O.K.-ed the hall transition to sweep and beyond
- HMS Q2: https://logbooks.jlab.org/entry/3901108
- Raster: https://logbooks.jlab.org/entry/3901099
- Target camera: e-mailed Joe and Jack to tell them that there is an opportunity to fix it during the Monday access
- Ops are still working on re-configuring their Hall C target screens: Sue confirmed she has everything she needs and said that Eric Forman will work on that; Ops proposed that, if target screens not ready before Monday day, one of the Hall C target experts can make a RED log entry stating that the Hall C target ladder is in Home, it will stay there and beam (type, current) is authorized to the Hall C dump; that's all Ops will need to send beam for tuning until Monday morning. After the Monday access all Hall C target screens (ours and their) must be fully updated and operational before receiving any beam
- On out Target screen Nathan noticed that there is a discrepancy between the encoder value between the SHOULD and READBACK when target is in Home. Greg confirmed that the readback is as intended (-1. which is v.v.v. close to zero) but the should (-9000) doesn't make sense; we have been trying to resolve this... --> at 9:55 this morning I texted Chris K.
- Monday morning access: Dave M. will condense H and D
- Monday morning access: work on HMS Q2, Raster, Target screens if not resolved prior to that point
Notices in Effect for Shift Crew
- Please read safety documentation (https://hallcweb.jlab.org/safety-docs/Fall2021/) and sign in the "yellow binder" in the Counting House (when it is there)
Current Issues
- HMS Q2 (won't prevent beam delivery until Monday)
- Maybe raster (won't prevent beam delivery until Monday)
- Hall C target camera (won't prevent beam delivery until Monday)
- Ops needs to work on their screens to reflect the current Hall C target ladder configuration
- We need to resolve the discrepancy between "should" and "readback" encoder value for target in Home
