October 26, 2022 Calorimeter

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

Connection instructions

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Our meeting ID number is 160 855 2106. Click "Expand" for more details.

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       Meeting ID: 160 855 2106
       Passcode: 944454


  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 resolution between data and simulation as a function of E, phi and theta to within 5%.
  4. Demonstrate agreement of photon reconstruction efficiency 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 (online)
    2. BCAL (offline)
    3. FCAL (offline)
    4. CCAL (offline)
  7. Reconstruction
  8. Simulations
  9. Any other business


Attendees: Mark, Elton, Jon, Varun, Sean, Zisis

  1. Announcements: none.
  2. Past Meeting Minutes. Zisis summarized them.
  3. Review Action Items: Zisis emailed Matt to get updates on short and long term tasks associated with FCAL, so that Mark and Zisis can organize those lists. Sean was cc-ed.
  4. Run Operations: nominal, with the usual maintenance items.
    1. FCAL: Occasional locks ups, sometimes handled up to a day later. Base change out.
    2. BCAL: Baseline stability/ hot channels. Pulser stops changing side: Mark will investigate spying on trigger bits. Elton mentioned that Beni has a script that runs on raw files.
    3. CCAL: no report.
  5. Calibration: Elton asked about the CPP calibrations. Karthik does the CPP-BCAL and Igal the CPP-FCAL. Re FCAL2 (Igal) method): Mark mentioned that the gains are the same, with some difference in the non-linearity correction. Sean is waiting for Naomi to finish before doing a monitoring launch. Then Mark can do his stuff.
  6. Monitoring
    1. BCAL LED Monitoring (online): nothing more than reported above.
    2. BCAL (offline): no report.
    3. FCAL (offline): no report.
    4. CCAL (offline): no report.
  7. Reconstruction: no report.
  8. Simulations: no reports.
  9. Any other business:
    1. Mark gave an update on FCAL2 work. Using the inventory databases, he made a log entry (e-Log 4055449), in order to have a starting game plan for FCAL2 (unknown: wrapping condition of blocks.). From the table on this blog entry: 187 removed, 206 keep base and not PMT, 1018 good PMT+base and use around insert, 1389 use outside the 1018. Some of the 206 bases will go to replace some of the 1389 ones. Critical storage of bases: hope is to build up 20 spares. FCAL will be stress tested at the end of the run before Xmas, and replacements will be made early in the new year.