Revision as of 14:04, 16 October 2012

Teleconference Time: 11:00 a.m. EST

• ESNET (Number is 8542553) and EVO session (GlueX Calorimetry meeting room)
• Phone connection only upon request.
  • +1-866-740-1260 : US and Canada
  • +1-303-248-0285 : International
  • then use participant code: 3421244# (the # is needed when using the phone)
  • OR from www.readytalk.com type access code 3421244 into "join a meeting" without the # (you need java plugin)

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 Videoconference Suite is 306-585-4204
• Athens Phone: in Christina's office is 011-30-210-727-6947

Items for followup from previous meeting

1. SiPMs (USM)
   • Provide histograms of all measured units for each specification at T=20 deg C and V=1.2 V above breakdown.
   • Send dump of data base. Provide the dump on a disk with the next shipment of SiPMs Data base included in last shipment.
2. Monitoring
   • Update the schedule of expected shipments of monitoring boards to JLab (Christina)
3. Simulation
   • Provide (more) realistic parameterization of resolution for input into the simulation Andrei and Irina are finalizing the parameterization of these

Presentations from recent meetings

Tentative Agenda

1. Announcements
2. Review of Action Items
3. Monitoring
   • GlueX-doc-2099 Optical cross talk with LED at center face of light guide
4. Update from USM
   • [SiPM Status] (Javiera)
   • Light Guide Status Oct 2
5. Status of testing at JLab
6. Simulations
7. Beam Tests, Cosmics
8. Other

Minutes

Attending: Christina, Stratos (Athens); Elton, David, Yi, Tim, Eugene (JLab); Will, Alam, Javiera (USM)

1. Announcements
2. Review of Action Items
3. Monitoring (Athens)
   • 1000 LED boards ready to ship. 3000 all tested but not regrouped according to intensity. 150-170 boards waiting on replacement strips (to arrive next week)
   • Expect all LED boards and strings to be ready by mid November.
   • The controller bare boards will arrive next week and expect stuffing to be completed by the end of November.
   • Fcal prototype has been ordered. Will send to JLab to check. Expect quick approval and completion of boards by the end of the year.
   • GlueX-doc-2099 Optical cross talk with LED at center face of light guide
   • Elton: jerry-rigged a new string of LEDs to trigger T3 perpendicular to the small face of the light guide. Data indicate that the optical cross talk is the 4% on the right side, but very little on the other side. This is the case for the standard configuration as well as this new configuration. Tim: Probably the light guides are glued displaced from one another. This can be verified on the mini-Bcal and also procedures put into place to avoid for the production modules.
   • Elton: Can check the LEDs visually before installation by pulsing at about 1MHz and setting the bias to 12 V.
   • Zisis: Can check the high resolution photos of each module at the time of gluing to consider adjustments.
4. Update from USM
   1. [SiPM Status] (Javiera)
      • Francisco has requested the final shipment of 360 sensors from Hamamatsu. Elton: Also need to receive the 10 additional units to complete the project.
      • Expect to ship 280 this week. Next shipments will be 640, which are ready but they need some of the reference pmts for data taking with the final 360. Final shipment will be 360 + 10. Shipments are precise numbers as received in packages from Hamamatsu in order to avoid any confusion with customs.
      • Information on the wiki has been updated. Elton will review and send any feedback.
   2. Francisco submitted the light guide status after the meeting:
5. Status of testing at JLab
6. Simulations
7. Beam Tests, Cosmics
8. Other