February 23, 2024

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 connection link: https://jlab-org.zoomgov.com/j/1617015555?pwd=L09IQ216dml6ZmM5ODExVjFsMX
• Meeting ID: 161 701 5555
• Passcode: 288953

Useful Links

• Shift Signup (Read only)
  • Shift Signup

• Hall-C Controls
• Hall-C Logbook
• MCC White Board
• Daily RC Reports

Hall status

• NPS column 24,25 initial repairs done
• Cosmic data check showed a few channels need to be fixed https://logbooks.jlab.org/entry/4255522

• Summary of work done during the access:
  • NPS work summary (https://logbooks.jlab.org/entry/4255429, https://logbooks.jlab.org/entry/4255443), thank you all for your hard work!
  • SHMS encoder investigation (https://logbooks.jlab.org/entry/4255365)
  • MQF3M01 water flow check (https://logbooks.jlab.org/entry/4255338)

• NPS crate #2 drops occasionally:
  • Ben had a closer look at the runs with the issue. He thinks that it might be because npsvtp1 clustering was messed up, and this causes a problem for the FADC readout mask logic.
  • Restarting a new run might be sufficient to clear it up.
  • Ben will check if a firmware update could help eliminating some of the problem.

Accelerator status

• Hall B taking beam
• Maintenance + Beam study next Wednesday

Current Run Plan

• Short-term run plan: https://hallcweb.jlab.org/wiki/index.php/Short_Term_Run-Plan
  • KinC_x36_6
  • Spectrometer momentum and angles have been set for the kinematics. NPS angle is set to 7.5 deg instead of 7.4 (could only achieved SHMS angle to 23.8 deg https://logbooks.jlab.org/entry/4255364)
  • We will start with setting up the corrector coils (Test plan is added to the MCC shift plan: https://ace.jlab.org/apps/pd/shift-plans/38835)
  • Followed by lumi/background scans and potentially optics
  • Do we want another polarization measurement next week? When? HallB will do Moller measurements on Wed.

Notices in Effect for Shift Crew

• IHWP change instruction: https://hallcweb.jlab.org/wiki/index.php/Hall_C_IHWP_Change_Procedure

Current Issues

• NPS crate #2 drops occasionally

Special Requests

• Guard house work from next Monday. Pay attention to the sign and follow the directions around there when coming to the accelerator site.