Difference between revisions of "June 25, 2020 Calorimeter"
From GlueXWiki
Line 57: | Line 57: | ||
= Minutes = | = Minutes = | ||
− | ''Attending: '' | + | ''Attending: Mtt, Beni. Sasha, Christina, Churamani, Colin, Edmundo, Curtis, Eugene, Jon, Karthik, Rebecca, Mark, Sean, Varun, Susan, Zisis'' |
+ | |||
+ | # Announcements: Karthik and Varun passed the written component of the PhD Comprehensive exam. | ||
+ | # Action Items | ||
+ | ## Mark looked at item 1. Only small offset changes. Towards the end of the run (~ 2-day subset of batch 8) the trigger changed and so did the efficiency. CCAL was readout but maybe not in the trigger -- to be checked. | ||
+ | # Run Updates | ||
+ | ## FCAL (Colin): FCAL has been on for ~1 week; thanks to Mark and Nick. Bases are being monitored; 4 bases gave HV comm alarms. A 'preemptive strike' for base repairs was discussed at length. In the end, Colin recommended a conservative approach in not swappnig out bases before the run and keeping ~10 bases on hand for replacement during the run. After the run, a comprehensive look and action for bases (HV, comm, high current draw, coax cable) both within the 3 inner rings, but also elsewhere in the FCAL can be pursued. Fernando has stated in the past that he knows of no vendor that can make new boards. | ||
+ | ## BCAL: it is on and operatting ok; currently the SiPMs are warm (ambient temperature) and will be cooled ~1 week before the run starts. Varun and Jon will take LED measurements before and after the run, to add to our past results on radiation damage. | ||
+ | # Calibrations | ||
+ | ## BCAL Gain Calibrations for different Batches (Susan) | ||
+ | ### BCAL gain stability across all channells for the Batches (Karthik) | ||
+ | # Monitoring | ||
+ | ## BCAL LED (Varun) | ||
+ | ## BCAL (offline) | ||
+ | ## FCAL (offline) | ||
+ | # Reconstruction | ||
+ | # Efficiencies | ||
+ | ## Photon Reconstruction Systematics Task Force] | ||
+ | # Simulations | ||
+ | # Any other business |
Revision as of 19:36, 29 June 2020
Meeting Time: 11:00 a.m. JLab time
- To join via a Web Browser, go to the page [1] https://bluejeans.com/907185247.
- To join via Polycom room system go to the IP Address: 199.48.152.152 (bjn.vc) and enter the meeting ID: 907185247.
- To join via phone, use one of the following numbers and the Conference ID: 907185247.
- US or Canada: +1 408 740 7256 or
- US or Canada: +1 888 240 2560
- Upon connection all microphones are automatically muted. To unmute your mike on a Polycom or equivalent unit, enter *4. Unmuting on a computer is trivial as there is a microphone button than can be clicked.
- More information on connecting to bluejeans is available.
Contents
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
- FCAL HDFCAL log book
- BCAL HDBCAL log book
- Calibrations: 2020 Data Production; RunPeriod-2019-11 Validation; Offline Monitoring Data Validation
Goals for Calorimetry Group
- 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%.
- Measure systematics of pi0/eta mass calibration as a function of detector position to a precision of at least 5 MeV.
- 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
- Checks of monitoring comments of Batch 5-8
- Timing anomalies: 72123-72416 (2ns peaks), 72417-72435 (time offset) -> Mark
- Hit efficiencies: 72316-72435 (especially visible in "enhanced" efficiencies) -> related to next item?
- Recon Matching: 72271 (inefficiency at module~12, and 90deg), 72385 (degraded efficiency at module~47) -> Elton
- Long term items
Tentative Agenda
- Announcements:
- Action Items
- Run Updates
- FCAL
- BCAL
- Calibrations
- BCAL Gain Calibrations for different Batches (B2-B8) Update
- BCAL gain stability across all channells for the Batches (2-8) ChannelByChannelMass
- BCAL Gain Calibrations for different Batches (B2-B8) Update
- Monitoring
- Reconstruction
- Efficiencies
- Simulations
- Any other business
Minutes
Attending: Mtt, Beni. Sasha, Christina, Churamani, Colin, Edmundo, Curtis, Eugene, Jon, Karthik, Rebecca, Mark, Sean, Varun, Susan, Zisis
- Announcements: Karthik and Varun passed the written component of the PhD Comprehensive exam.
- Action Items
- Mark looked at item 1. Only small offset changes. Towards the end of the run (~ 2-day subset of batch 8) the trigger changed and so did the efficiency. CCAL was readout but maybe not in the trigger -- to be checked.
- Run Updates
- FCAL (Colin): FCAL has been on for ~1 week; thanks to Mark and Nick. Bases are being monitored; 4 bases gave HV comm alarms. A 'preemptive strike' for base repairs was discussed at length. In the end, Colin recommended a conservative approach in not swappnig out bases before the run and keeping ~10 bases on hand for replacement during the run. After the run, a comprehensive look and action for bases (HV, comm, high current draw, coax cable) both within the 3 inner rings, but also elsewhere in the FCAL can be pursued. Fernando has stated in the past that he knows of no vendor that can make new boards.
- BCAL: it is on and operatting ok; currently the SiPMs are warm (ambient temperature) and will be cooled ~1 week before the run starts. Varun and Jon will take LED measurements before and after the run, to add to our past results on radiation damage.
- Calibrations
- BCAL Gain Calibrations for different Batches (Susan)
- BCAL gain stability across all channells for the Batches (Karthik)
- BCAL Gain Calibrations for different Batches (Susan)
- Monitoring
- BCAL LED (Varun)
- BCAL (offline)
- FCAL (offline)
- Reconstruction
- Efficiencies
- Photon Reconstruction Systematics Task Force]
- Simulations
- Any other business