October 27, 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

• SHMS: 8 degrees, -9.2 GeV, 1x, 2x 1-7 off
• HMS: 20 degrees, -5.878 GeV (setting 9)
• Spectrometer magnets ramped down
• Controlled access during RF recovery
• 5pass beam, 30 to 60uA this afternoon

Run Plan

• Continue data taking.
• Hall A pass change next week ( Monday through Wednesday)
• Short RF recovery today
• before RF recovery:
• Take positron data until Monday for boiling/rates studies ( need stable beam up to 60uA)

Issues

• CODA crash was monitored overnight as suggested by Bob https://logbooks.jlab.org/entry/4069728

Notes

• watch beam stability
• need more shift workers (always)

To do

• Install Q1 SHMS vacuum gauge (~3hr)
• calibrate SHMS Dipole LN2 valve during next access (Amy Comer, Steven Lassiter; Heidi Fansler) https://logbooks.jlab.org/entry/4064490. For now, monitor the ice accumulation if any https://logbooks.jlab.org/entry/4064528
• reboot or replace the SHMS angle camera (Dave Gaskell?) https://logbooks.jlab.org/entry/4067528
• replace GEM gas bottle (Jixie)
• check UNSER control box (Dave Mack) https://logbooks.jlab.org/entry/4068738
• reboot NCG readback (Ellen Becker) https://logbooks.jlab.org/entry/4069438