RC Meeting, Monday, October 25 , 2021

RC Meeting Information

RC Daily Meetings are at 10 am, remote connection link: https://bluejeans.com/861439920

Accelerator Status

1. Beam was off 09:45-13:30 on Sunday for a magnet issue that only impacted Hall C. Otherwise, steady production on day/swing/owl.
2. Pass change for Hall A is definitely Monday.
3. Regarding the Secretary of Energy tour, VIP schedules can change unexpectedly, but the last info we were given was that the accelerator will be off 09:30 Monday morning. Tours wrap up at 13:30.

Hall C Status

1. We had good production, mostly at 40-42muA. Hall C beam current was reduced to 30muA for a couple hours when Hall A was increased from 3 to 6 muA.
2. Number of good pions was  ???

Current Run Plan

1. Continue data taking until early Nov

Current Issues

1. Replace flow switches for (HMS?) magnet power supplies: next opportunistic access (Joe Beaufait) ( PENDING )
2. Q3 insulating vacuum spikes generating alarms. For example, https://logbooks.jlab.org/entry/3930175 .
3. One HB LHe incident of note: https://logbooks.jlab.org/entry/3929152 . (possible clue to the origin?)
4. Target ladder camera was identified to be bad: Joe Beaufait will order camera ( PENDING )
5. Still running with no UPS on the SHMS cryo controls - Steve L. has ordered batteries and UPS. ( PENDING )
6. HCCAM02 not functioning (lift required to replace).

Useful Links

• Abbreviated beam restoration procedure
• Fall 2021 Shift Schedule
• Hall-C Live Status
• Hall-C Logbook
• MCC White Board