Run Planning Meeting Notes, Oct 11-Oct 17, 2018

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Wednesday, Oct 16 at 08:45

  1. Notes from the past 24 hours:
    • Slow process in getting beam back to the hall
      • Didn't finish empty target run until early hours of the morning
      • Postponed Lubomir's run until this morning
  2. CEBAF
  3. Action Items
  4. Issues
  5. Reports
  6. Run Plan
    • Beam tuning
    • Lubomir's run with no radiator at high current
    • Week 4 Week 5
  7. AOB
    • Beni next RC
    • More RCs needed

Tuesday, Oct 16 at 08:45

  1. Notes from the past 24 hours:
    • Beam came back on swing shift. Smooth throughout the night
  2. CEBAF
    • RF recovery/general maintenance day today
      • Aggressive timeline: beam back by 1pm
  3. Action Items
  4. Issues
  5. Reports
  1. Run Plan
    • RF Recovery today. Production Running until Monday when the TAC runs are scheduled
    • Week 4 Week 5
  2. AOB

Monday, Oct 15 at 08:45

  1. Notes from the past 24 hours:
    • Good weekend of running with stable beam
  2. CEBAF
    • Spent all day and into swing on Friday to fix BLM trips. This worked, and the beam was quite stable. RF and BLM trips down
  3. Action Items
  4. Issues
    • DAQ issues: rocCDC2, dropping to 0 rate during running with 450nA beam.
  5. Reports
  6. Run Plan
    • Beam Studies today. We are getting parasitic beam at the moment. Who needs an access? Who wants an access? How long do you need?
    • Likely RF Recovery tomorrow
    • TAC run with V-wire Thursday
    • Week 4 Week 5
    • Very likely that on Monday 10/22 Hall C will go down for at least 5 hours, maybe longer. Schedule a TAC run with foil?
  7. AOB

Friday, Oct 12 at 08:45

  1. Notes from the past 24 hours:
    • Beam back at 11:30 am, Sasha finished L1 trigger studies by 2:00 pm
    • MCC suggests they recalibrate iIon chamber to reduce trip rates. Previously, it was only calibrated up to 80 nA.
    • Sergey performed high rate DAQ tests with current up to 900 nA
    • David has new online monitoring site up
  2. CEBAF
    • Almost 20 BLM trips/hour through yesterday and into the early morning. Hall C went down around 4 am and BLM trips were significantly reduced. They think there is something wrong with the beam that is being injected into the accelerator.
    • Will do a retune of the accelerator around 10am today. Should take 1-2 hours.
  3. Action Items
  4. Issues
  5. Reports
  6. Run Plan

Thursday, Oct 11 at 08:45

  1. Notes from the past 24 hours:
    • Beam issues most of swing (7hrs to complete amorphous run) and owl shift (~1hr of beam in total).
  2. CEBAF
    • 5th pass separator failed during swing shift and remained problematic into the beginning of owl. Beam back at 3:20am.
    • PSS drop in the machine at 3:30 am. No beam until 6am.
  3. Action Items
  4. Issues
  5. Reports
  6. Run Plan
    • Need to schedule a TAC run
      • Can we do this opportunistically?
      • Use bleedthrough current?
      • Hall C plans to switch experiments on approximately the 22nd. This is around the time of accelerator maintenance, so they may plan to switch experiments then.
    • Hurricane Michael arriving this evening. Do we need to take any precautions?
    • Week 4 Week 5
      • Beam Studies Monday
      • RF Recovery Tuesday
  7. AOB