Run Planning Meeting Notes, March 15 - March 22, 2023

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Zoom Connect Meeting ID: 160 199 0060 / Passcode 8394 MCC Whiteboard Hall D counting room white board Spreadsheet with list of runs Integrated Trigger Count Hall D Logbook

Monday March 20

Past 72 hours

Shift Summaries

Reports

  • omega yields at 900nA -- Justin
  • TAGM bunch time structure -- Hovanes
  • occasional rapid access for tending PS test setup -- Sasha
  • End of run plan executed:
    1. solenoid ramp-down started 14:10
    2. raw mode data collected during ramp-down
    3. many fdc current trips, understood these were expected
    4. solenoid ramp-down completed at 18:40 -- earlier than expected?
    5. current reduced to 50nA, still seeing fdc trips
    6. straight track runs taken in both raw mode and regular mode
    7. straight track run plan completed, continued taking straight-track data in mode 9
    8. beam taken away at 6:00

Issues


Plans

Friday March 17

Past 24 hours

  • Dropped to RESTRICTED for tours at 3:45pm 3/16
    • Temperature in the hall rose to >77 degrees, recovered in time
    • Visits ended by 7:00pm
    • Hall D swept and requested beam restoration
    • Started off with new harp scans, then continued production
  • Beam accounting point of interest: tour down was counted as BANU

Shift Summaries

Reports

Issues

  • Parsing issue with rocBCAL7 (rocID=37 and slot=16), recovered by power cycling rocbcal7
  • TAGM column 16, fadc250 stopped counting in middle of run around noon, run ended, recovered by power cycling roctagm1
  • Problem writing raw data to tape resolved, transfer to tape resumed
  • Issue writing to local disk blocked DAQ during 121161, resolved by Sergey and running resumed
  • Lockup of fcal bases continues regularly, resolved by reset procedure at the end of run (or sometimes on its own!)
  • Problems with radiator harp scans happened again, resolved by Hovanes restarting IOC, https://logbooks.jlab.org/entry/4150880 working again at 9:45pm]
  • Coherent edge (blue points) on CBREM gui spectrum not updating, work-around by bringing up separate fit tool

Plans

  • Another high current run at 900 nA during the day today?
  • Continue running production
  • Straight-track run ~50nA
    • planned for March 19th Sunday swing
    • magnetic field ramped down
    • access not required
    • people to contact: Justin, Sasha, Lubomir, Naomi
  • After beam goes away, one shift of BCAL LED data requsted -- Mark Dalton, Varun

Plans on Accelerator Side

  • Hall C running continues, no apparent issues that might interrupt them before Monday

Regular Production Cycle

  • Production (300 nA, 2h runs) with cycle:
    • 2 runs PARA (0/90)
    • 3 runs PERP (0/90) (one additional run per cycle for next 2 cycles, to catch up with PARA 0/90 -RTJ)
    • 2 runs PARA (45/135)
    • 2 runs PERP (45/135)
    • 1 run AMO (use it to rejuvenate AMO reference in CBREM EPICS GUI)

Thursday March 16

Past 24 hours

  • Tagger Hall Access requested by Hovanes
    • came as a surprise to RADCON and MCC crew
    • discussion during the 8:00 meeting
    • we can do better
  • High current run(900 nA)
    • initially blocked by Crew Chief -- discussed at 8:00 meeting
    • eventually granted after some delay
    • main participants Justin, Sasha, Lubomir, Naomi
    • trigger conditions eventually found that allow running at 75kHz data rate @ 900nA [3][4]

Shift Summaries

Reports

Issues

Plans

  • Continue running production
  • Visitors tour of Hall D starts at 4:45pm 3/16
    • Data collection should end sometime after 4:00pm, when convenient before 4:20
    • Contact MCC and ask to drop Hall D to RESTRICTED, tagger hall not affected
    • Ask them to contact RADCON to sweep Hall D for the visit
    • Visit should end by 6:45pm
    • As soon as they leave, put Hall D back in Power Permit and request beam restoration
    • Start off with new harp scans, then continue production
  • Straight-track run ~50nA
    • planned for March 19th Sunday swing
    • magnetic field ramped down
    • access not required
    • people to contact: Justin, Sasha, Lubomir, Naomi

Plans on Accelerator Side

  • Hall C running continues, no apparent issues that might interrupt them before Monday

Regular Production Cycle

  • Production (300 nA, 2h runs) with cycle:
    • 2 runs PARA (0/90)
    • 3 runs PERP (0/90) (one additional run per cycle for next 2 cycles, to catch up with PARA 0/90 -RTJ)
    • 2 runs PARA (45/135)
    • 2 runs PERP (45/135)
    • 1 run AMO (use it to rejuvenate AMO reference in CBREM EPICS GUI)