August 10, 2022
From HallCWiki
Contents
RC Meeting Information
RC Daily Meetings are at 11:00 (am) via Zoom and in person in the counting house meeting room (2nd floor)
- Zoom remote connection information:
Join ZoomGov Meeting https://jlab-org.zoomgov.com/j/1607100885?pwd=ZFBsRTFsYm5Zb0laZ0tyZXNjcEE0QT09 Meeting ID: 160 710 0885 Passcode: 595071 One tap mobile +16692545252,,1607100885# US (San Jose) +16468287666,,1607100885# US (New York) Dial by your location +1 669 254 5252 US (San Jose) +1 646 828 7666 US (New York) +1 669 216 1590 US (San Jose) +1 551 285 1373 US 833 568 8864 US Toll-free Meeting ID: 160 710 0885 Find your local number: https://jlab-org.zoomgov.com/u/ab2CekLXgQ
Useful Links
- Shift Signup (Read only)
- PionLT_2022_Physics_Status
- KaonLT Logbook - Used for PionLT updates too
- Physics analysis updates should be cross posted here
- Run Plans
- Hall-C Controls
- Hall-C Logbook
- MCC White Board
Current Status
- Pass change (5->4) completed yesterday.
- Carbon hole check ok: https://logbooks.jlab.org/entry/4026613
- Issues with SHMS dipole shortly after beam arrived: https://logbooks.jlab.org/entry/4026678
- See special instructions below (and on sticky notes in CH) re: SHMS dipole
- Completed Q2=2.45 W=3.2, middle epsilon, SHMS center
- Started Q2=2.45 W=3.2, middle epsilon, SHMS left (achieved about 3/4 of reduced statistics goal) - VBV3H08 (big valve downstream of target) closed and would not open.
Current Run Plan
- Wait for beamline valve fix
- Rotate SHMS to 5.5 degrees
- Continue with Q2=2.45 W=3.2, middle epsilon, SHMS right
- Move on to Q2=3.85, W=3.07, low epsilon: SHMS right, center, left
- Note: when rotating away from 5.5 degrees after SHMS right setting, will have to contact Steve Lassiter or Amy Comer to enable rotation
- Have MCC perform arc energy measurement when convenient (sooner is better)
- Beam off at 6:30 tomorrow for maintenance day
Notices in Effect for Shift Crew
- If all SHMS magnets crash at the same time, push the SHMS dipole crash button (on the rack above the target heater manual controls and target temperature readbacks).
- See Jacob's log entry about physics plotting script: https://logbooks.jlab.org/entry/4026914
Current Issues
- Downstream beamline valve
- Coffee maker broken! Emergency instant coffee in Counting House.
- Shifts filled until August 14 - then we have OWL shifts available up to August 19. Lots of openings August 20++.
Planned Accesses to the Hall
- Access today for valve repair and SHMS rotation
- Maintenance day still scheduled for Thursday - Controlled Access planned
- Aerogel change: if all goes extremely well, aerogel change could happen Friday. Otherwise, will take place Monday.
Planned Accelerator Configuration Changes
- Pass change (4->3) next week. Right now, on the white board for Tuesday, August 16
Special Requests
- Fix coffee machine, or replace.