RC meeting and Run Plan, Thursday, May 15th

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RC Meeting Information

Current RC: Arun Tadepalli

RC Daily Meetings on Mondays and Wednesday are at 1:00PM, and Tuesdays, Thursdays, and Fridays at 1:30PM, via Zoom and in person in the counting house meeting room (2nd floor).

Zoom info

Useful Links

Accelerator

  • Beam returned to the hall at around 4:30 am.

Hall-A

  • All subsystem are working as expected.
  • Took data at 10uA

Status of Hall A

  • Moller measurement in progress

Access requests and special runs

  • None

Updates on Subsystems

  • ECal:

ECAL channels HV adjustment: https://logbooks.jlab.org/entry/4375343

  • HCal:

Issue with HCAL latency and window: https://logbooks.jlab.org/entry/4375531

  • GEMS:
  • CDET:
  • DAQ:
  • Analysis Software


Items to keep an eye on

  • Target chamber pressure (Lawrence is looking at a spare turbo pump, we might get one from Hall-B): Old
  • SBS magnet current stability/overheating test: Plane dropped

Shifts

All set for this week


Run plan when MCC sends beam back

 * 10uA beam until next decision to go to a higher beam current (15 uA)
  • For higher current up to 50 uA, MCC needs to be notified a few days early


Beam Restoration Procedure

Beam requirements

  • start off at 5 pass beam
  • intrinsic beam size (at target): 150–500 µm (<600 &micro m is also acceptable)
  • raster size: 2 mm X 2 mm
  • During kin#3 SBS magnet will be at 1762.23 Amp, the corrector magnets at -80A for all.
  • production run @ 5-10 µA for now
  • For later
    • production beam current : 50 µA
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