February 26, 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

• column 24, 25 LV troubleshoot: https://logbooks.jlab.org/entry/4256617
  • Ran without column 24, 25 for Saturday night
  • Also found few more columns have unstable LVs, reseated the LV cable for column 28, 29: https://logbooks.jlab.org/entry/4256646

• SHMS hut AC unit tripped off since Saturday
  • coupled to LCW system, tripped off when LCW went down
  • Facilities reset the AC unit
  • Crate temperatures not monitored, Bill is working on it

• Production data taking with NPS at 6m
  • Column 0, 1 are back on, increased current to 8uA on LD2 (https://logbooks.jlab.org/entry/4256786, https://logbooks.jlab.org/entry/4256787)
  • First cycle of data taking completed

• NPS crate #2 drops occasionally:
  • Not much reported recently, taking 30min runs (restarting a new run more often) seems helping

Accelerator status

• Overall quiet shift overnight, got up to 5uA for LH2 and 3uA for LD2
• 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
  • 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
• BTA with low current -

Special Requests

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