Apr 9, 2015 Calorimetry

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Meeting Time: 11 a.m.

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Participant Direct Lines

• JLab Phone: in CC F326 is 757-269-6460 (usual room)
• JLab Phone in CC L207 is 757-269-7084
• 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. Work with Hovanes to activate VME LED pulser setup for FCAL (Elton). Note: Currently the system still works using the associated NIM electronics. Hovanes has suggested that we delay the new programing till after this run so as not impact the working system. We will try to see if Orlando can devote some time to this project in late May. Otherwise, we will try to update the program ourselves.

References

1. FCAL HDFCAL log book
2. BCAL HDBCAL log book
3. Wish-list of action items: Media:BCAL_Action_Items-2015b.pdf prioritize and prune. (Zisis)

Tentative Agenda

1. Announcements
2. Action Items
3. Spring Run
   • Commissioning Time Chart
4. FCAL Update [2]
5. BCAL Update
   1. BCAL - Layer 4 (George)
6. Reconstruction and Simulation
7. Calibration
8. Any other business

Minutes

Attendees: Elton, Mark, Tegan, Adesh, Will, Manuel (JLab); Zisis, Andrei, Ahmed (UofR); George, Christina (Athens)

1. Announcements
2. Action Items
3. Spring Run
   1. FCAL
      • No updates on hardware. Only one base is currently off, which occurred when one IOC was rebooted.
      • Manuel has checked that the addition of the FCAL parts works as expected in the test JInventory DB. Paul Smith (IU) had some reservations about the mechanics of operation, but is willing to use it for tracking problems. During a phone conference on Tuesday (Manuel, Sergey, David and Elton) it was decided that Manuel could proceed with inputing all information into the working JInventory DB. He will make it available to Paul Smith when ready.
   • Commissioning Time Chart
4. FCAL Update [3]
   1. Relative estimate of pi0 rates for E=5.5 GeV relative to E=10 GeV. (Adesh)
      • Followed example by Will's analysis for BCAL
      • Used DBeamPhoton class for access to tagger information. This combines hodoscope and microscope information
      • Finds prominent pi0 peak in Fcal trig data, but relatively small peak in Fcal-Bcal trigger.
      • Conclusion is that only about 20-30% of pi0's found at 10 GeV remain after a photon energy cut of 5.5 GeV
      • Backgrounds are highly trigger dependent. Pi0 width is about 40 MeV.
5. BCAL Update
   1. BCAL - Layer 4 (George)
6. Reconstruction and Simulation
7. Calibration
8. Any other business