Run Planning Meeting Notes, September 16 - September 23, 2021

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<- Back to Run Coordination Meetings:Summer2021

Thursday, September 16

  1. Last 24 hours:
  2. Report/issue
  3. Run plan
    • Wait for beam delivery. Begin experiment commissioning. Run plan

Friday, September 17

  1. Last 24 hours:
  2. HARP Scan results: https://logbooks.jlab.org/entry/3906296
  3. Report/issue
    • AC cable wired backward? : https://logbooks.jlab.org/entry/3906359
      • Radcon is escorting Nick into the collimator cave for checking
    • Counting house microphone issue:
      • Improved significantly by the new microphone by Matt
      • A longer USB to micro USB cable will further improve the remote shift experience
  4. Run plan
    • Run plan
    • Complete beam configuration (Hovanes) after fixing Active collimator
    • Detector checkout
      • Contact persons: Rachard (): richard.t.jones@uconn.edu, Drew: andrew.p.smith@duke.edu , Sasha: andrew.p.smith@duke.edu, Igal: ijaegle@jlab.org , Tyler: .
    • Low Current 2nA run this afternoon (during Mike's shift)
    • Empty target run again overnight?

Saturday, September 18

  1. Last 24 hours:
    • AC Fixed at 9:30 am
      • Voltage cable was attached but not locked.
    • Hovanes completed the last step of beam check at 2pm
    • 2nA beam + bleedthrough to the Hall since then.
      • slit close, laser off.
      • Hall C at 70uA and constantly changing current between 50-70 uA
  2. Overnight: snake scan.
  3. Present: snake scan ongoing.
  4. Shift Summary:
  5. Issues:
  6. Run plan
    • TAGM checkout to be completed (Richard)
    • Beryllium target installation
      • 6:30am, Beam.
      • 7:00am- 7:30am, radcon survey of beamline target area.
      • 7:30am- 8:00am, Survey & alignment setup
      • 8:00am-8:30am, removing components (Target & start counter)
      • 8:30am, Berylium target installaion by target group (with Imani's presents)
      • Total work duration: 14 hours
      • Currently planned for Monday.
    • A Possibility of maintenance day on Tuesday.
      • Should we shift target installation by 1 day?
      • Injector tune-up to help bleed through.


Monday, September 20

  1. Weekend operation:
    • Snake scan with CCAL check up:
      • Hall C on: Close slit, turning off laser. Hall C bleedthrough only
      • Hall C off: Open slit, 2nA beam.
      • PSC < 20, CCAL_total < 400k.
    • TAGM checkout completed (by Richard): https://logbooks.jlab.org/entry/3908199
      • CCAL exposed to direct 100 uA beam for 4-5 mins, damage assessment?
    • Four hours Stable TAC run (TAC + CCAL): Run 80603
    • 1.5 hour stable TAC run (CCAL Only): Run 80693
  2. Issues:
  3. Near future plan:
    • Hall C tune beam for three hours starting at 10 am, TAC run?
    • Beryllium target installation on Tuesday
    • Full target installation schedule: https://logbooks.jlab.org/entry/3909024
      • 6:30am, Beam off.
      • 7:00am- 7:30am, radcon survey of beamline target area.
      • 7:30am- 8:00am, Survey & alignment setup
      • 8:00am-8:30am, removing components (Target & start counter)
      • 8:30am, Berylium target installaion by target group (with Imani's presents)
      • Total work duration: 14 hours
      • Tuesday night beam ?
      • Access during target installation work:
        • Limited spot avaliable. Contact shift leader before arriving.
        • Target work at highest priority; then FCAL work.
    • Accelerator maintenance day will not be on Tuesday.
      • Radcon can't support Hall A dump work in parallel with maintenance day.


Tuesday, September 21

  1. In last 24 hours:
    • Final round of Snake Scan with CCAL
    • Current:
      • Hall is open since 7:30 (one hour late as planned), Radcon support at 7:45.
      • 11:00 is better for the FCAL work (currently 9 people in the hall)
    • Accelerator:
      • Injector issue. Hall C is down due to a magnet issue. RF issue with 1L05.
  2. Issues:
  3. Near future plan:
    • Complete target installation.
    • Go back to production/calibration. DAQ test

Wednesday, September 22

  1. In last 24 hours:
  2. Issues:
  3. Data monitoring:
  1. Near future plan:
    • Completing FCAL calibration.

Thursday, September 23

  1. In last 24 hours: https://logbooks.jlab.org/entry/3910318 (4am to 10am), https://logbooks.jlab.org/entry/3910458 (10am to 4pm), https://logbooks.jlab.org/entry/3910670 (4pm to 10pm), https://logbooks.jlab.org/entry/3910862 (10pm to 4pm)
  2. Issues
  3. Plan for the day, https://halldweb.jlab.org/primexd/run_plan/Run_Plan_Fall_2021.pdf
    • tagm studies by Richard
    • FDC straight track studies by Lubomir
    • Hall access to replace fADC and look FCAL missing channels
    • After hall access, we will need to take at least 500M trigger for FCAL pi0 calibration before starting Compton at low intensity