Mar 5, 2020 Calorimeter

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Meeting Time: 11:00 a.m.

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Participant Direct Lines

  • JLab Phone in CC L207 is 757-269-7084 (usual room)
  • JLab Phone: in CC F326 is 757-269-6460
  • Phone in the Regina Video-conference Suite is 306-585-4204
  • Athens Phone: in Christina's office is 011-30-210-727-6947

References

  1. FCAL HDFCAL log book
  2. BCAL HDBCAL log book

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 east 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. Complete Calorimeter work packages

Long term items

Tentative Agenda

  1. Announcements
    • Announcement at Production and Analysis meeting. Complete calibrations by April 1? See 2020 Data Production
  2. Action Items
  3. Run Updates
    1. FCAL
    2. BCAL
  4. Calibrations
  5. Monitoring
  6. Reconstruction
  7. Efficiencies
  8. Simulations
  9. NIM articles
  10. Any other business

Minutes

Attending: Elton, Mark, Tolga (JLab); Karthik, Varun, Zisis (UofR); Christina (Athens); Drew (Duke); Sean, Edmundo (FSU); Susan (Juelich), Matt (IU)

  1. Announcements
    • Zisis asked about travel to JLab related to the Coronavirus. At the moment, travel should be continued as normal. Visitors are asked to fill out a questionnaire to gather information regarding possible exposure.
    • Announcement at Production and Analysis meeting. Complete calibrations by April 1? See 2020 Data Production
      • Mark: timing calibrations completed up till about 10 days ago
      • Position and attenuation length/gain ratios are in process and should be completed soon. Mark will send out a note when the calibration is complete so that Karthik can start the pi0 gain calibration.
  2. Action Items
  3. Run Updates
    1. FCAL
      • Log Entry Replaced power cord on Quattro 3 and put a new anagate in for Quattro 7
      • [Added at end of meeting] Matt: Colin shipped bases back to IU and Paul is investigating. So far Paul has repaired about 4 bases and found poor solder connections and some physical damage. However, no systematic pattern of failures has emerged yet.
    2. BCAL
      • Log Entry FP bits 9 and 10 are not firing all the time. The sequencer was stopped/started and is seems to be working but we need to keep monitoring it.
      • Mark is adding some diagnostics that will allow us to check its status more easily in the future.
  4. Calibrations
  5. Monitoring
  6. Reconstruction
    • Sean: Sean is working with Mark, Alex A. and Simon on including reactions with neutrons into our standard framework.
    • Have a preliminary initial implementation with the aim of reproducing Simon's results that were shown at the last collaboration meeting.
    • Next step would be to improve the covariance matrix and make wider checks of the system.
  7. Efficiencies
  8. Simulations
  9. NIM articles
    • Archive Paper Article on FCAL shaper parameter has been submitted to JINST after getting feedback from the collaboration.
  10. Any other business