RC meeting and Run Plan, Wednesday, May 14th

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RC Meeting Information

Current RC: Asar Ahmed

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 was down from 10:00AM to 11:00PM.
  • MCC worked on mitigating the induced halo issue in Hall B.
  • Still they are extracting the beam magnetically.
  • Wednesday: Accelerator is down for flushing the magnets.

Hall-A

  • All subsystem are working as expected.
  • Took data at 10uA
  • Rate~0.4kHz, live time 100% (CoinMatch)
* Beam available: 6.2h
* Beam used: 4.4h
* Not used: 1.3h

Status of Hall

  • Controlled access

Access request Today

  • GEM, ECal, HCal, DAQ

Updates on Subsystems

  • ECal:
  • HCal:
  • GEMS:
  • CDET:
  • DAQ:
  • Analysis Software


Items to keep an eye

  • 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

  • Few trade requests and empty slots until July 1st.
* June, 7: TO
* June, 20: TO
* June, 21: TO


Run plan when MCC sends beam back

 * 10uA beam until next decision
  • 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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