June 22, 2022 Calorimeter

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

Connection instructions

Use ZoomGov: https://jlab-org.zoomgov.com/j/1608552106?pwd=UE1nZFIzUUZHVjJEVGJXTGdUYTV3UT09.
Our meeting ID number is 160 855 2106. Click "Expand" for more details.

  • Meeting ID: 160 855 2106 Passcode: 944454
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       Meeting ID: 160 855 2106
       Passcode: 944454

References

  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. Run Operations
    1. FCAL under FCAL calibration -> CPP FCAL time/energy calibrations under
      1. Gain matching calibration plots
      2. Timing calibration
    2. BCAL
    3. CCAL
  4. Calibration
  5. Monitoring
    1. BCAL LED
      1. Update-cpp (Varun)[2]
    2. BCAL (offline)
      1. Brief update, Hadronic Efficiencies plots for Version 7 Monitoring, Tolga [3]
    3. FCAL (offline)
      1. FCAL Timing Resolution (Kevin)[4]
    4. CCAL (offline)
  6. Reconstruction
    1. BCAL efficiency: Churamani [5]
  7. Simulations
  8. Any other business

Minutes

Attendees:Igal, Kevin Saldana, Varun, Stjepan, Jon, Karthik, Malte, Churamani, Tolga, Sean, Elton, Beni, Rebecca

  1. Announcements:
    1. Welcome to Kevin (IU grad student)
    2. CPP run is going ok.
    3. Zisis is on vacation in July. Malte volunteered to assist Mark in organizing and running the CALWG meetings. Jon can also help.
  2. Past Meeting Minutes: no review.
  3. Run Operations
    1. FCAL: Malte provided an update on the base replacement. Failure rate is much lower than last year; preventative maintenance has likely paid off. The pool of spares is 30, with 15 ready to go. The 30 should last until the end of CPP and Chris is working on more boards (5-10/week) which then need a 2-week testing period. Also, there have been 0 lockups (!) so far n CPP. The RL is about the same in CPP as LH2 (5%) and a bit lower than PrimEx (8%). Rate in FCAL is lower during CPP and this might be helping with no lockups.
    2. BCAL Varun gave a report on the LED monitoring. Upstream trigger bit is missing; past remedy was to reboot the crate. Mark does this. SiPMs look nominal.

FCAL under FCAL calibration -> CPP FCAL time/energy calibrations under

      1. Gain matching calibration plots
      2. Timing calibration
    1. BCAL
    2. CCAL
  1. Calibration
  2. Monitoring
    1. BCAL LED
      1. Update-cpp (Varun)[7]
    2. BCAL (offline)
      1. Brief update, Hadronic Efficiencies plots for Version 7 Monitoring, Tolga [8]
    3. FCAL (offline)
      1. FCAL Timing Resolution (Kevin)[9]
    4. CCAL (offline)
  3. Reconstruction
    1. BCAL efficiency: Churamani [10]
  4. Simulations
  5. Any other business