RC Meeting, Monday, November 8, 2021

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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!

Accelerator Status

  1. Running beam to C and D (not sharing slit until after pass change)

Hall C Status

  1. Beam energy measurement: https://logbooks.jlab.org/entry/3938406
  2. Set up beam on Sunday start of swing: https://logbooks.jlab.org/entry/3938456
  3. Sieve run +0.5% C = 13045, 13046
  4. Sieve run + optics 2 = 13047, 13048
  5. Sieve run + optics 1 = 13049, 13050
  6. Heep coin 1 = 13051-13056, dummy=13057 (50k/77k)
  7. Heep coin 2 = 13058-13061, dummy=13062 (43k/64k)
  8. Production, low epsilon in progress

Current Run Plan

  1. 3-pass physics run plan: production, elastic singles, delta scan

Current Issues

  1. Replace flow switches for (HMS?) magnet power supplies: next opportunistic access (Joe Beaufait) ( PENDING )
  2. 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 .
  3. 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 .
  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 - Heidi replaced, but need to check charge https://logbooks.jlab.org/entry/3937512
  6. HCCAM02 not functioning (lift required to replace-Brad is tracking this replacement).
  7. SHMS pre-shower HV channel: https://logbooks.jlab.org/entry/3938576

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