December 7, 2023
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: https://logbooks.jlab.org/entry/4229331
Useful Links
Current Status
- Moller Measurement yesterday, polarization = 86%
- Beam recovery after Moller (mostly) smooth
- Required MCC to reboot an ioc. This caused reboot of MCC ioc's
- HMS Chamber 2V1 recovery slow (lingering structure in drift distance plot)
- Chose to take 2 hour cosmic
- Returned to run plan on LD2
Current Run Plan
- Continue run plan: https://hallcweb.jlab.org/wiki/index.php/Short_Term_Run-Plan
- complete 1st cycle of KinC_x50_2 then move to KinC_x50_2'
Notices in Effect for Shift Crew
- All shifts should come in as planned.
- Heidi on vacation 7-13 Dec. Contact Steve L for cryo during that time.
- cc Heidi on any cryo logbook entry (fansler@jlab.org)
- Physically verify green led of gas flow and BCM temps in electronics room
- Restore "Empty Water from Coffee Machine" to Shift Checklist (and do this!)
- Record data rate (MBy/sec ) for each new run/config
- Shift Leader: Record HMS (electron) tracking efficiency from each 50K replay report
Current Issues
- On call list seems incomplete and should be addressed by the Hall: https://logbooks.jlab.org/entry/4230495
- We need other indications of this interlock. In Hall A, we have it shut off detector HV via the alarm handler, and we have a flow rate alarm. Seems the useful PV values have not been working since 1-Sept.
- NPS PMT/Base failures are propagating into columns 9 & 10
Planned Access to the Hall
Planned Accelerator Configuration Changes
- We will run until 07:00 Dec 15.
- Target will be warmed up and parked.
- Hall will remain in Controlled Access until 07:00 Dec 19
- Beam studies (Day Shift) Dec 19 will send beam into hall
