October 31, 2023

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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
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Useful Links

• Shift Signup (Read only)
  • Shift Signup

• Hall-C Controls
• Hall-C Logbook
• MCC White Board

Near Future Plan

1. We will perform a corrector coil beam steering test for the next angle setting with a non-zero corrector coil field.
2. Wednesday, November 2, during the beam study, 7:00 beam stops, 7:30 a.m.: sweep the hall open for maintenance; Hall will enter restricted access at 8:00-8:15 a.m., and sweep close when the NPS maintenance work is completed (no time limit).

• We will attempt the following maintenance items:
  • Put the SHMS to the largest angle possible. Full hall sweep.
  • NPS students will remove all PMTs + bases. Hall tech support is needed for this part.
  • Two new bases with the low voltage regulator bypassed (verified) will be swapped into the NPS.
  • NPS shielding installation: large sheets of borated-polyethylene
  • Replace the NPS radiation monitoring dosimeters.
  • Heidi is looking into adding an additional bandit to ensure SHMS dipole stability.
  • Chandan and Dave Mac will access and check the HMS hodoscope patch panel. to address this issue: https://logbooks.jlab.org/entry/4210267
  • Aaron will push a new code for the NPS chiller controller.
  • Joe will guide a walk-through at 1 p.m.
  • Virtual machine reboot request from computing center (Hanjie is coordinating this part)
• Sometime in the future, we will invite Vald to give an insight into the high radiation test results.

I am sure the maintenance list will grow as we get closer to Wednesday.

Special Studies

• Peter found HMS Central Momentum mismatch/Correction: https://logbooks.jlab.org/entry/4210756

Planned Accelerator Configuration Changes

• Pass change in Hall A on the 31st