October 10, 2022

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Revision as of 10:51, 10 October 2022 by Gaskelld (Talk | contribs) (Current Status)

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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:
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 Meeting ID: 160 710 0885
 Passcode: 595071
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 Meeting ID: 160 710 0885
 Find your local number: https://jlab-org.zoomgov.com/u/ab2CekLXgQ

Useful Links

Current Status

  • SHMS paddle study complete
  • 26 degrees, setting 9 complete
  • 26 degrees, setting 1 in progress
  • Coffee maker working!!! (thanks Paul)! https://logbooks.jlab.org/entry/4052331
  • New alarm on EDTM rate (will alarm briefly at run start, then should go away if EDTM set correctly)
  • Doug H. got less annoying phone case for RC phone (now weighs less than 10 lbs.)

Current Run Plan

  • Complete 26 degrees, setting 1
  • Continue to settings 2, 3, etc.

Notices in Effect for Shift Crew

  • Pay attention to DAQ prescale settings
  • Update EDTM setting to give ~25 Hz AFTER prescale (see table near DAQ computers)
  • Use good electron fraction from 50k replay to estimate how many events will be needed to get required statistics
  • For settings with long runs/low rates, can run full replay (run_full_hms.sh and run_full_shms.sh)

Current Issues

  • SHMS PRLO/PRHI thresholds might be a little on the high side (https://logbooks.jlab.org/entry/4053287), but setting lower results in very high rates in PRLO
    • Maybe for SHMS, ELLO should have NO calorimeter at all (i.e., just 3/4 + Cherenkov)?
  • SHMS NGC PMT1 HV set back to 1700 (https://logbooks.jlab.org/entry/4052210) we'll need more elastic data to get efficiency
  • Need to analyze SHMS paddle study ASAP to determine how we'll run 8 degree data
  • cermode10 in the SHMS causes significant dead time (https://logbooks.jlab.org/entry/4052716) - should we turn it off?
  • Need shift workers for Tuesday, Day (then Thursday, Day)

Planned Accesses to the Hall

  • None

Planned Accelerator Configuration Changes

  • Hall A pass change Wednesday

Special Requests