July 1, 2010 Readout

Teleconference Time: 11:00 a.m. EST

• ESNET and EVO session
• Phone in CC L207 is 757-269-7084
• Phone:
  • +1-800-377-8846 : US
  • +1-888-276-7715 : Canada
  • +1-302-709-8424 : International
  • then enter participant code: 77438230# (remember the "#"). Phone connection only upon request.

Items for followup from previous meeting

1. Testing goals and setup (Serguei) - addressed in agenda below
2. Will to find out if there is any feedback from USM on terms and conditions from our procurement package.
3. Collect this information of testing on the wiki for ease of presenting information. (USM)

Tentative Agenda

1. Announcements
2. Review of Action Items
3. Update - USM
   • Status of MOU
4. Simulation runs
5. Cosmic-ray setup at UofR
   • Light collection tests
6. Geometry
7. SiPM Radiation Hardness Test (Update from Yi)
8. Light guides

Minutes

Attendees:Beni, Yi, Elton (JLab); Andrei (UofR); Alam (USM).

1. Announcements
   • Second shipment of Bcal modules delivered to JLab. They have been unloaded onto the parking lot. They will be transfered to the warehouse on Warwick Blvd. this afternoon.
2. Review of Action Items
3. Update - USM
   • Serguei and Will are on travel.
   • Light guides shipped to Regina, should arrive next week.
4. Simulation runs
   • Irina will start simulation runs of energy deposition in module next week.
5. Cosmic-ray setup at UofR
   • Tests are underway. Data for one point collected, and a second point taking data. No analysis yet. Measurements are being affected by power outages.
   • Goal is to have data at five points along the module to determine the conversion Mev/p.e. and attenuation length in the actual calorimeter module (not just bare fibers).
   • Expect results in August.
6. Geometry
7. SiPM Radiation Hardness Test (Update from Yi)
   • SiPM samples (1mm2 and 3mm2) are ready for testing, but awaiting Carl to return next week. They will then be irradiated using the calibrated AmBe source from RadCon, and retested.
   • Estimates for dark current to increase by a factor of 10 using new dose calculations by Pavel Degtiarenko from Radcon, are 1.2-1.6 years for H and 0.8-1.0 years for He at 100% running. For a "typical" year of 10^7 s, this translates into about 4 years for H and about 3 years for He.
   • We will plan to have a dedicated meeting the week of July 12 to review all relevant input to deciding to proceed with the SiPM procurement.
8. Light guides