March 22, 2024

RC Meeting Information

Current RC: Michael Nycz (mnycz@jlab.org)

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

• Short term run plan [1]
• Shift Signup (Read only)
• Hall-C Controls
• Hall-C Logbook
• MCC White Board
• Daily RC Reports

Summary

• Yesterday, while attempting to bring us back to production, there was a vacuum issue in the NE spreading.
• have been down since ~11 am yesterday. Prior to the vacuum issue, the calorimeter was moved from 3 to 4 meters. Unfortunately, no data has been taken at this 4 meter setting.
• This morning, will move the calorimeter back to 3 meters in anticipation of the resumption of beam.
• While beam has down, a short access was made into the hall during the SWING shift. Module C3-R3 was replaced.
  • A full summary of the activities can be found in Josh's logbook entry: https://logbooks.jlab.org/entry/4270285
  • LED runs were taken during OWL shift.

• Presently, work continues to address the vacuum issue. They expect to have a clearer idea about the timeline for resuming beam delivery around noon today,

• PMT bases surveyed and removed from the hall

Planned Access to the Hall

• 03/22/2024 - Move NPS to 3 meters: KinC_x50_0 / NPS = 14.40 deg (Completed)

Possible plans while we wait for resumption of beam

• LED (Magnet on & Magnet off) / Cosmics?
  • Alternate HV settings?
• Other suggestions?

Future Plans

• Current Kinematic: KinC_x50_0
  • HMS angle = 25.940 deg, HMS Momentum = -2.638, SHMS angle = 30.700 deg (NPS Angle 14.400 deg)
• Proposed plan: Change kinematic setting on Saturday
• Tuesday (03/26): Moller measurement

Miscellaneous

• Site Office walkthrough ~ 15 - 30 minutes on Wednesday (will need to be out of the hall).
• Doug will try and coordinate to let us know the time so we can prepare

Shift schedule

• Is beginning to fill up
  • TO Sunday OWL: Trade request
  • TO Sunday DAY: SL needs to have walkthrough (SAF112)
  • TO shift for OWL and SWING (Monday - Wednesday)