December 7, 2022

RC Meeting Information

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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)

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Useful Links

• Shift Signup (Read only)
  • Shift Signup

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

Current Status

• Currently in Controlled Access during the RF recovery
• HMS Q1 power supply. Ellen replace the signal conditioner: https://logbooks.jlab.org/entry/4097300
• Helium-3 pressure problems: https://logbooks.jlab.org/entry/4097562
  • Likely a leak in the Helium-3 cell which was fixed by Dave
  • Warm up and recover Helium-3.
  • Fill Helium-3 cell with Helium-4 and check for leaking over the next several days.
  • If it appears stable, return the Helium-3
  • Or if the leak is fixed, leave at the pressure it currently is
• Target boiling study: SHMS at 20.0 degrees (-4.4 GeV) and HMS at 20 degrees (-4.4 GeV)
  • Finished He-3, He-4, Dummy, and limited carbon before beam stopped at 8 am.

Run Plan

• Target Boiling
• BCM Calibration?
• Energy Measurement?