June 11, 2020 Calorimeter

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Revision as of 16:13, 11 June 2020 by Elton (Talk | contribs) (Minutes)

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Meeting Time: 11:00 a.m. JLab time

  1. To join via a Web Browser, go to the page [1] https://bluejeans.com/907185247.
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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
  3. Calibrations: 2020 Data Production; RunPeriod-2019-11 Validation; Offline Monitoring Data Validation

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. Efficiencies:
    1. BCAL: Elton to revive costheta_cm code and to pass onto another person.
    2. FCAL: Matt/Jon to revisit Jon's FCAL efficiency study.
  2. Long term items

Tentative Agenda

  1. Announcements:
  2. Action Items
  3. Run Updates
    1. FCAL
    2. BCAL
  4. Calibrations
    1. FCAL non-linearity causes [2]
  5. Monitoring
    1. BCAL LED
    2. BCAL (offline)
      1. Batches 5-8 (Tolga) [3]
    3. FCAL (offline)
  6. Reconstruction
  7. Efficiencies
    1. Photon Reconstruction Systematics Task Force
    2. Photon efficiencies for different run periods. 2D MC/data map in theta/E for systematic evaluation.
  8. Simulations
    1. Comparing simulation and data (Colin)
  9. Any other business

Minutes

Attending: Churamani, Colin, Jon, Mark D., Sean, Matt, Susan, Karthik, Tolga, Varun, Igal, Sasha

  1. Announcements:
    • Hall D Safety Page Documentation for resumption of operations
    • Operations Resumption Status
    • No one can come to campus without a specific invitation from Eugene. Tier 2 will likely return early next week. At that time, Mark Dalton will turn on calorimeter electronics in coordination with Elton and Colin.
  2. Action Items
    • See Photon Reconstruction Task Force below.
  3. Run Updates
    1. FCAL
    2. BCAL
  4. Calibrations
    1. FCAL non-linearity causes [4] (Igal)
      • The response of particle-gun showers were thrown at the Fcal for a range of incident photon energies. The threshold in hdgeant4 was eliminated so that the effects of leakage would be more apparent. Igal plotted the output of the clusterizer.
      • Matt: There are thresholds associated with creating clusters and this may need to be removed if "pure" leakage is of interest. Ital will look into the clusterizer code to understand what thresholds are included.
  5. Monitoring
    1. BCAL LED
    2. BCAL (offline)
      1. Batches 5-8 (Tolga) [5]
    3. FCAL (offline)
  6. Reconstruction
  7. Efficiencies
    1. Photon Reconstruction Systematics Task Force
    2. Photon efficiencies for different run periods. 2D MC/data map in theta/E for systematic evaluation.
  8. Simulations
    1. Comparing simulation and data (Colin)
  9. Any other business