September 28, 2022 Calorimeter

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Meeting Day/Time: every other WEDNESDAY at 11:00 a.m. JLab time

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       Meeting ID: 160 855 2106
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  1. FCAL HDFCAL log book
  2. BCAL HDBCAL log book
  3. CCAL HDCCAL log book
  4. Calibrations: 2020 Data Production; RunPeriod-2019-11 Validation; Offline Monitoring Data Validation
  5. Photon Reconstruction Task Force
  6. BCAL calibration links, 2020, PrimEx, SRC

Goals for Calorimetry Group

  1. Determine preliminary photon reconstruction efficiencies as a function of E, phi and theta in data and simulation with a point-to-point precision of at least 5%.
  2. Measure systematics of pi0/eta mass calibration as a function of detector position to a precision of at least 5 MeV.
  3. Demonstrate agreement of photon reconstruction efficiency and resolution between data and simulation as a function of E, phi and theta to within 5%.

Action Items

  1. Short term CALWG Items
  2. Long term items
  3. Calorimeter work packages
  4. AI - BCAL Monitoring:
    1. Hydra Real-Time Dashboard
    2. Hydra 24-hr Monitoring Logs

Tentative Agenda

  1. Announcements
  2. Past Meeting Minutes
  3. Review Action Items
  4. Run Operations
    1. FCAL
    2. BCAL
    3. CCAL
  5. Calibration
  6. Monitoring
    1. BCAL LED Monitoring
    2. BCAL (offline)
    3. FCAL (offline)
    4. CCAL (offline)
  7. Reconstruction
    1. Churamani: (Next Meeting: Extracted BCAL Efficiencies and Corresponding Systematics)
  8. Simulations
  9. Any other business


Attendees: Mark, Igal, Varun, Jon, Sasha, Matt, Malte, Karthik, Stjepan, Sean, Tolga, Zisis‘’

  1. Announcements: none.
  2. Past Meeting Minutes: reviewed briefly. Calorimeters were operating (almost) routinely.
  3. Review Action Items: Mark and Zisis will work on these before the next meeting.
  4. Run Operations
    1. FCAL: Malte reported nominal operations. 2 bases were swapped out, as reported in the logbook. An issue has cropped up after a reset of the bases that is the recommended procedure on the Wiki when the bases lockup. Specifically, 2-3 based don't come up to full HV, but they are actually fine and need manual adjustment. Perhaps this is an issue with info getting lost on the CAN bus. The bases appear to be randomly located on the FCAL. Malte will update the instructions for the shift takers and we wil continue to observes this issue. Mark spoke about the refurbishing of the bases (considerable effort) and making new ones. Matt will be at the lab next week and a meeting will be setup to discuss this and how to move forward for JEF.
    2. BCAL: Mark reported nominal operations. There are some hot channels but mostly on Layer 4 so not a big issue. The LED pulling system has been operating well recently.
    3. CCAL: Sasha reported that the performance is good, without surprises, and only 1 channel needs a gain adjustment.
  5. Calibration: no report.
  6. Monitoring
    1. BCAL LED Monitoring: Varun reported that the online LED monitoring looks goof. Stjepan will report on the dark rate study using the Mark's modified plugin at our next meeting.
    2. BCAL (offline): Tolga expects to report at our next meeting.
    3. FCAL (offline): no report.
    4. CCAL (offline): nothing else.
  7. Reconstruction
    1. Churamani will report at our next meeting on the Extracted BCAL Efficiencies and Corresponding Systematics.
  8. Simulations: no report.
  9. Any other business