January 26, 2023
From HallCWiki
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
Current Status
- Finished setting 3 of high Q2 electron data taking in the HMS (-3.09 GeV and 35 deg). Completed swing 1/24/2023
- Helium-3 remains for setting 4 of high Q2 electron data taking in the HMS (-2.72 GeV and 35 deg).
- Carbon took 10 hours beam on time, 24 actual.
- Helium-4 took 11.5 hours beam on time, 17 actual.
- Aluminum stand-in took 4.5 hours beam on time, 6 actual.
- Helium-3 Est to take 27 hrs beam on time, <TBD> actual.
- Target temperature spike for loop 1 AND loop 2:
- https://logbooks.jlab.org/entry/4117272
- Loop 2 had a spike during production running, will need cut out
- https://logbooks.jlab.org/entry/4117306
- Greg looked into the spikes and found nothing of note. Suggested to continue as planned.
- Swing into owl target moved to loop 1, no issues.
- MCC currently re-steering the beam. Don't know how long this will take
- Data quality checks of SHMS?
Current Run Plan
Notices in Effect for Shift Crew
- Beam current for the Helium targets is limited to 40 uA!
- Always let the RC know with questions and any issues that require expert help. https://logbooks.jlab.org/entry/4109412
Current Issues
- Accelerator issues to provide high beam current to Hall A and C.
- Lowering the Hall C current to reduce beam trips in a way the split between Hall A and C current is not in equitable way.
Planned Accesses to the Hall
Planned Accelerator Configuration Changes
Special Requests
- Need to do a BCM calibration at 60uA when Hall A is at low current / down. Coordinating with Hall A RC.
