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Documents

General Info

Documents

 

Agendas/Minutes

October 1, 2019

Software

Runs

  • 2019 Run Spreadsheet
  • FEE Runs: 9371, 9593, 9898, 9899, 9920, 9921, 10097, 10103, 10104, 10716, 10717, 10718


ECAL Calibration Tasks

  • Alignment
    •  based on survey
    •  
Alignment
  • based on JLab's survey
      • based on tracking
    • Energy
      •  Gains
        •  Cosmics (Andrea/Luca, ~Oct 15)
          • relative, before and after the run
        •  FEE (Andrea/Luca)
    • absolute
            • dedicated FEE runs
      and
            • , singles triggers
          •  WABs
          •  Muons (Norman)
        •  Sampling fractions
          • energy-dependent, simulation (Andrea)
        •  Position/projection corrections
          • previously simulation based, no track information
        •  Edge corrections (Andrea)
          • based on track-y at ECAL, simulation
      • Time
        •  RF (Nathan)
        •  channel offsets
        •  time-walk
          •  current parameterization should be fine if convergent or cutoff above 2.2 GeV

      HODO Calibration Tasks

      • Gains
        • Calculated several time throughout the run, in the database
        • Observed dependence on luminosity, and a tiny bit on time
        • For production runs, a single run from every day (few days) can be used to calculate gains
        • For low-luminosity runs, a single run can be used to calibrate  each
        • About 15-20 file will be needed
        • Format? Either hpstr/DST with hodo information should be available, or I have a simple ntuple that gives necessary information
      • TIme
        • Currently hit time is defined as a threshold crossing time, should we use mode-7 timing algorithm?
      • Alignment
        • Hodo acceptance is covering all the ECal/SVT acceptance
        • Efficiency studies during the run didn't show any efficiency loss close to edges of the calorimeter.

      Software Tasks

      • Generate aligned detectors (and track scoring plane(s))
        •  survey-based (Nathan)
        •  track-based
      • Simulation
        •  single-e+/e-/γ events over entire kinematics for corrections
        •  remove 2 dead crystals, e.g. set gains to zero in database
      •  Validating RF extraction
      • Database
        •  Final ECAL gains
        •  Final HODO gains
        •  ECAL Time offsets
      •  Add HODO to particle objects
        •  Time/position HODO-ECAL coincidence
      •  Update ECAL corrections for 2019/4.4 GeV
        •  sampling fraction 
        •  edge shower loss

      Meeting Agendas/Minutes

      October 1, 2019

      • 2019/2015 survey analysis
      • Task lists, priorities, assignments
        • cosmic gains (Andrea/Luca) and RF (Nathan) are first, ~2 weeks
        • followed by FEE gains (Andrea/Luca) and timing offsets
        • then higher order corrections
        • discussed simulation needs for corrections, added to task lists above

      October 15, 2019

      October 29, 2019

      • RF
        • found signals in data, looks good, extracting to LCIO
        • looks like old pulse fitting method will still work
      • HODO
      • ECAL
        • scoring plane is shifted in v1 detectors, 5 cm upstream of where it should be
        • survey detector ready in software, to PR
      • Simulations
      • Note, EVIO files for all FEE runs (2.4 TB) are pinned on /cache for 30 days as of 10/27

      November 26, 2019

      • ECAL
      • HODO
      • Data Processing / Simulations

      December 10, 2019

      • ECAL
      • HODO
      • WABs (Norman)

      January 14, 2020

      February 4, 2020

      February 18, 2020

      February 25, 2020

      • Trigger bit EVIO skims going to /cache/hallb/hps/physrun2019/production/evio-skims
        • fee, mult2, mult3 bits 

      March 3, 2020

      • Trigger bit skims done, for all production runs after the SVT was repositoned
        • FEE reconstructed files (no tracking) are here:  /cache/hallb/hps/physrun2019/production/pass0.0/fee/

      March 17, 2020

      March 31, 2020

      April 21, 2020

      • ECAL FEE-based gains are now in the database for the golden run period.

      June 30, 2020

      July 21, 2020

      August 4, 2020

      August 11, 2020

      • Andrea's FEE-based gains, after correcting for 2019's higher threshold in MC, are in the database now. 
        • the previous state of the database was tagged with physrun2019_ecal_fee_gains_v1
        • and the current state is tagged as physrun2019_ecal_fee_gains_v2

      September 1, 2020

          • Any looks at data reconstructed with latest gains in database.
            • FEE runs 717 & 718
              • /volatile/hallb/hps/ngraf/physrun2019/fee/recon/010717/
              • /volatile/hallb/hps/ngraf/physrun2019/fee/recon/010718/
            • WAB
              • /work/hallb/hps/ngraf/physrun2019/wab/
          • Lower energy sampling fraction extraction from data with WABs.
          • Extending gain coverage outside of FEE region with muons.
          • Updated search for pi0 -> gamma gamma calibration peak (mass and resolution). 
          • Single-particle MC samples
            • /work/hallb/hps/ngraf/physrun2019/samplingFractionMC/recon/e-
            • /work/hallb/hps/ngraf/physrun2019/samplingFractionMC/recon/e+
            • /work/hallb/hps/ngraf/physrun2019/samplingFractionMC/recon/gamma
            • /work/hallb/hps/ngraf/physrun2019/samplingFractionMC/recon/muon

      September 8, 2020

      • ECAL muon/WAB energy updates

      September 15, 2020

      • ECAL muon energy response compared to FEEs
      • WAB energy 
      • MC sampling fraction
        • scoring plane calculation

      September 15, 2020

      • ECAL muon energy response compared to FEEs
      • WAB energy 
      • MC sampling fraction
        • scoring plane calculation

      September 21, 2020

      September 29, 2020

      • MC sampling fraction
        • Andrea implemented the spline correction with resource files on branch iss732, Norman/Nathan will see about wrapping it with the old correction to be called the same from particle creation code 
      • WAB energies for full scale sampling fractions from data
      • gains from muons versus FEE
        • Norman produced muon "gains" in most of the acceptance, Andrea to plot ratio to FEE gains to see if they track in FEE acceptance and can then be used outside FEE acceptance
      • the 5 missing crystals
        • rediscussed that they have poor FEE signals, corrupting the gains of nearby crystals before being removed from the FEE-based calibration, and also poor cosmic signals after the run
        • conclusion was and is that the chance of doing anything useful with them is bad

      October 6, 2020

      • MC sampling fraction - software work
      • WABs for data-MC sampling fraction adjustments
      • Muon-based gains

      October 13, 2020

      October 20, 2020

      • MC sampling fraction
      • WABs for data-MC sampling fraction adjustments
      • Muon-based gains

      November 3, 2020

      • Mid/Low-energy DATA sampling fraction exctracted from WABs and compared to MC
      • Muon-based gains, performance relative to FEE gains outside of FEE region based on WABs
      • Timing calibration

      November 8, 2020

      January 12, 2020

      • Stuck FADC bits
      • Timing
      • Energy corrections
      • Position corrections
      • Holly's FEE calibration software
      • Møllers and WABs
        • absolute
        • 4.4 GeV and positron trigger should greatly reduce their statistics/usefulness
        • singles and old-pair triggers may help
      • Cosmics
        • relative, before and after the run
        • software in hps-java
      • LED
        • relative, before and during the run
        • software in hps-java
      • Edge corrections
        • based on tracks' y-intercept at ECAL relative to ECAL y-edge
        • Time
      • channel offsets and time-walk
        • these presumably haven't changed significantly since the 2016 run
        • RF
      • signal shape is different relative to 2016
        • potentially more important for positron/singles triggers than for pairs