February 27, 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

• DIS singles data for LH2, LD2, Dummy. Carbon data need to be taken before switching to the Positron data taking
• BCM calibrations:
  • https://logbooks.jlab.org/entry/4257267 (Faraday cup measurments)
  • https://logbooks.jlab.org/entry/4257273 (BCM calibrations)
• Completed second production data cycle (first one with 8uA on LD2)

• NPS crate temperatures:
  • Bill added them to MUNIN: https://hallcweb.jlab.org/munin/crates_det-day.html
  • Temperature readings around ~95F for crate #4
  • Escorted access: Confirmed AC working, Placed box fans for crate #2 and #4 (https://logbooks.jlab.org/entry/4257294)
  • Asked facilities to set AC from 68F -> 65F
  • SHMS hut temperature sensor to be replaced on Wed during the access
  • Hall temperature reading frozen: https://logbooks.jlab.org/entry/4257295

Accelerator status

• Trip rates 10/hr (about half of it form RF trips)
• Maintenance + Beam study on Wednesday

Current Run Plan

• Short-term run plan: https://hallcweb.jlab.org/wiki/index.php/Short_Term_Run-Plan
  • KinC_x36_6
  • DIS singles scans (NPS calo off), starting around 11am, takes about ~2h
  • BCM calibrations, starting around 1pm including the Faraday cup measurements (0.5h), total about ~2h

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
  • Not much reported recently, taking 30min runs (restarting a new run more often) seems helping
• BTA with low current - https://logbooks.jlab.org/entry/4256075
  • Helper script: go_bta_config
• NPS crate temperatures:

Special Requests

• Guard house work till Friday. Pay attention to the sign and follow the directions around there when coming to the accelerator site.