Latest revision as of 15:26, 12 March 2025

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

Connection instructions

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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. Discuss what should be the default reconstruction algorithm for FCAL2.
8. Simulations
9. Any other business

Minutes

Attendees: Harsimran, Stjepan, Igal, Sean, Matt, Malte, Simon, Zisis

1. Announcements: as far as we know, the beam is still coming on March 21.
2. Past Meeting Minutes: nothing to review.
3. Review Action Items: no review.
4. Detectors
   1. FCAL/ECAL:
      • Malte reported that 6 FCAL channels missing were tracked to FADC issues, with them being on 6 difference boards in 5 different crates. (Historically this has happened before, years ago). Solutions of swapping boards were discussed at the RC meeting, if the high speed electronics group cannot repair these on time for beam.
      • Also, Malte said that Sasha and Hakob are working on the LMS reference system (crystal with alpha source) and said that 3-4 days are needed to fully checkout the ECAL to ensure all dividers are properly connected.
   2. BCAL:
      • Malte also mentioned that he and Mark are working on the BCAL hot checkout. They noticed that the RTDs (both up and down stream) are reading higher than the past average in temp, with the chiller at 5 C. Zisis will discuss this with Tim.
      • Zisis reported that he and Jon completed the SiPM bias hot checkout, and Zisis uploaded a how-to to DocDB which is now linked from the BCAL Experts wiki page. Also, that Regina will do the BCAL LED expert monitoring as well as the BCAL monitoring plots.
5. Calibration: no report.
6. Monitoring: see above.
7. Reconstruction
   1. Discuss what should be the default reconstruction algorithm for FCAL2. Simon described the work he has been doing in this regards and the difficulties encountered. A discussion ensued and at the end it was decided to have different reconstruction algorithms for the FCAL and ECAL. Simon has done a good job in stitching the boundary between these, and special cases were discussed with ideas of how to handle them either at lower or higher level. Matt suggested that since a lot of effort has been expended on on the FCAL method, that we continue with it (as any change involves risk). This was agreed by all.
   2. Varun and Harsimran continue to work on the covariance matrix. It already works for FCAL, but the ECAL one has hit some technical snags that Simon and Regina guys are trying to solve.
8. Simulations
9. Any other business