RC Meeting, Monday, November 8, 2021
RC Meeting Information
RC Daily Meetings are at 10 am, remote connection link: https://bluejeans.com/861439920 There is a 10:00 RC meeting today, 11/03/2021!
- Running beam to C and D (not sharing slit until after pass change)
Hall C Status
- Beam energy measurement: https://logbooks.jlab.org/entry/3938406
- Set up beam on Sunday start of swing: https://logbooks.jlab.org/entry/3938456
- Sieve run +0.5% C = 13045, 13046
- Sieve run + optics 2 = 13047, 13048
- Sieve run + optics 1 = 13049, 13050
- Heep coin 1 = 13051-13056, dummy=13057 (50k/77k)
- Heep coin 2 = 13058-13061, dummy=13062 (43k/64k)
- Production, low epsilon in progress
Current Run Plan
- 3-pass physics run plan: production, elastic singles, delta scan
- Replace flow switches for (HMS?) magnet power supplies: next opportunistic access (Joe Beaufait) ( PENDING )
- HMS Q3 insulating vacuum spikes generating annoyance alarms that take minutes to recover. https://logbooks.jlab.org/entry/3930175 Noise levels on transducers look OK, but Junaid's plot indicates Q3 is burping: https://logbooks.jlab.org/entry/3932992 .
- Serious HB LHe low liquid level alarms. https://logbooks.jlab.org/entry/3933051 Always seems to start with a subtle, simultaneous increase in level in Q1/2/3. https://logbooks.jlab.org/entry/3929152 .
- Target ladder camera was identified to be bad: Joe Beaufait will order camera ( PENDING )
- Still running with no UPS on the SHMS cryo controls - Heidi replaced, but need to check charge https://logbooks.jlab.org/entry/3937512
- HCCAM02 not functioning (lift required to replace-Brad is tracking this replacement).
- SHMS pre-shower HV channel: https://logbooks.jlab.org/entry/3938576
- How the harp scans and carbon hole target should look (see links):
- carbon hole target beam centering procedure:
- Resetting the "ioc heartbeat epics communications" (start by clicking on the heart at upper left of the magnet controls screen
- Fall 2021 Shift Schedule
- Hall-C Live Status
- Hall-C Logbook
- MCC White Board