Sep 6, 2018 Calorimeter

Meeting Time: 11:00 a.m.

1. To join via a Web Browser, go to the page [1] https://bluejeans.com/907185247.
2. To join via Polycom room system go to the IP Address: 199.48.152.152 (bjn.vc) and enter the meeting ID: 907185247.
3. 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
4. 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.
5. More information on connecting to bluejeans is available.

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

Action Items

1. BCAL and FCAL: Develop standard fiducial volume cuts for the calorimeters
2. BCAL: Create non-linearity corrections for MC for gain adjustment. (Tegan) Work ongoing
3. FCAL: Cross check MC changes by Richard to make sure that gains are not affected in both Geant3 and Geant4 (Collin) Matt/Sean are working with IHEP on calorimeter simulations
4. BCAL: Interchange LED trigger cables and see if upstream and downstream features change (Elton and Mark)

Complete after new launch

1. From Mike's work: -cos(phi) type dependence in the data and a phi dependence at the downstream end of the bcal. See Sep 21, 2017 Calorimeter Meeting.

References

1. FCAL HDFCAL log book
2. BCAL HDBCAL log book

Tentative Agenda

1. Announcements
2. Action Items
3. Run Updates
   1. FCAL
   2. BCAL
4. Calibrations
   1. Calibration Dashboard
   2. FCAL calibration using CompCal (Liping)
   3. PrimEx algorithm and calibrations (Ilya)
5. Reconstruction and Simulation
   1. GlueX-doc-3737 SiPM Saturation (Elton)
   2. Update on Splitoff Rejection Studies (Rebecca)
      1. Previous work
6. NIM articles
7. Any other business

Minutes

Attending: Elton, Colin, Lipin, Ilya, Mark, Sasha (JLab); Matt, Rebecca (IU); George, Christina (Athens); Sean (FSU); Tolga, Rupesh (FIU); Will (CMU); Tegan, Colleen, Ahmed (UofR).

1. Announcements
   • Accelerator is down till at least next Wed.
   • Christina asked if more detailed information could be made available to people offsite. Matt suggested participating in the first 10-15 min of the RC meetings (which are cancelled till Monday) to get latest updates from the accelerator. Elton: Will pass this along to RCs and suggest that more detailed/frequent e-mails be sent out to the collaboration.
2. Action Items
   • Check MC gains in FCAL after updates by Richard. Matt: He and Sean have been meeting with IHEP, who have joined the collaboration and have expertise in calorimetry. They are seeing some anomalies in omega MC events. Will continue to investigate whether the effect they are seeing is only in the FCAL and its energy dependence.
3. Run Updates
   1. FCAL (Colin)
      • Two bases have failed with about ten dropping HV. Twenty spares on hand. Waiting for accelerator news before additional replacements.
   2. BCAL
      • Expect to take LED data as
4. Calibrations
   1. Calibration Dashboard
   2. FCAL calibration using CompCal (Liping)
   3. PrimEx algorithm and calibrations (Ilya)
5. Reconstruction and Simulation
   1. GlueX-doc-3737 SiPM Saturation (Elton)
   2. Update on Splitoff Rejection Studies (Rebecca)
      1. Previous work
6. NIM articles
7. Any other business