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General Info
- Tuesdays at 11:00 (JLab time)
- Room B101 at JLab
- Bluejeans
- Confluence
ECAL Calibration Tasks
- Alignment
- based on survey
- based on tracking
- Energy
- Gains
- absolute
- dedicated FEE runs and singles triggers
- Cosmics (Andrea/Luca)
- relative, before and after the run
- Møllers and WABs
- absolute
- 4.4 GeV and positron trigger should greatly reduce their statistics/usefulness
- singles and old-pair triggers may help
- Edge corrections
- based on tracks' y-intercept at ECAL relative to ECAL y-edge
- Time
- channel offsets
- time-walk
- RF
- signal shape is different relative to 2016
- potentially more important for positron/singles triggers than for pairs
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
- Validating RF extraction
- Final ECAL gains in database
- Final HODO gains in database
- ECAL Time offsets in database
- Adding 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
- Task lists, priorities, assignments
- 2019/2015 survey analysis
- Additions
- Simulations needed for
- sampling fraction (energy dependence)
- edge corrections (track truth Y, scoring plane)
- position corrections (projective, off crystal axis)
- Missing crystal on electron side, and one more
- needs to go in simulation
- 442 statuses in the database
- or gain to 0