Latest revision as of 11:59, 26 March 2025

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

Connection instructions

Connect to ZoomGov Meetings

References

1. FCAL HDFCAL log book
2. ECAL HDECAL log book
3. BCAL HDBCAL log book
4. CCAL HDCCAL log book
5. Calibrations: 2020 Data Production; RunPeriod-2019-11 Validation; Offline Monitoring Data Validation
6. Photon Reconstruction Task Force
7. BCAL calibration links, 2020, PrimEx, SRC
8. BCAL pi0 calibration
9. FCAL calibration

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 resolution between data and simulation as a function of E, phi and theta to within 5%.
4. Demonstrate agreement of photon reconstruction efficiency 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. Review Action Items
4. Detectors
   1. FCAL/ECAL
   2. BCAL
5. Calibration
6. Monitoring
7. Reconstruction
   1. Covariance Matrix update - Varun [1]
8. Simulations
9. Any other business

Minutes

Attendees: Simon, Igal, Varun, Harsimran, Mac, Malte, Mark, Zisis

1. Announcements: beam could start this weekend; May 11-13 collab meeting.
2. Past Meeting Minutes: no review
3. Review Action Items: no review
4. Detectors
   1. FCAL/ECAL:
      • readiness is pretty good - last few channels being checked; translation table updated. ~2 bases/day need changing. Chaining bases and getting ready, cables to be fixed (LEMO) all fine. Issue FADCs (long known) - whole module has issue with DAC chip; replaced yesterday. Sth new: we are blowing individual ADC channels: 9 channels; cause is unknown. No available personnel from fast electronics group to fix these. Swapped channels and Justin adjusted ccdb for channel map. 2 ADC boards still available one with 5 and one with 8 channels free. Could it be soldering resistor or jumper? Visual inspection by Malte did not reveal anything obvious. Diagnostics need us to find a full spare to replace a malfunctioning one. Talking to Hall B to see if we can borrow boards. Running the LED chains to make sure everything looks good; hot checkout will be completed soon.
   2. BCAL: hot checkout all good.
5. Calibration: no report.
6. Monitoring: Varun and Harsimran will do Hydra with Tolga; LED monitoring. Upstream LED occupancy script issue not solved. Standard LED monitoring will work.
7. Reconstruction
   1. Covariance Matrix update - Varun [2]. Present run number and default algorithm were not working, so now using Island. Looked at low level quantities: shower energy, r and phi-hat distributions in 1 deg slices; not Gaussian which is needed for covariance process - uncertainty may be somewhat overestimated. Azimuthal symmetry no longer works for FCAL2: use 2D look up table (r, and phi over a quadrant or an eigth) - this requires development; also throw energy and two angles.... Insert region focus looks sort of ok now. Insert is better than LG but is it too good? Progress. Look at transition region next. Simon is working on the algorithm; let's wait for this. Shower codes need to be modified; Mark Weill make it a GitHub issue.
8. Simulations
9. Any other business