Mar 22, 2011 Readout

Teleconference Time: 11:00 a.m. EST

• ESNET 8542553 and EVO session
• JLab Phone: in CC F326 is 757-269-6337 (usual room)
• JLab Phone in CC L207 is 757-269-7084
• Phone in the Regina Videoconference Suite is 306-585-4204
• Phone:
  • +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)

Items for followup from previous meeting

1. Zisis will send the Regina light guide requirements to Will.

Tentative Agenda

1. Announcements
2. Review of Action Items
3. USM update
4. Simulations
5. Electrical/cooling (Elton)
6. Geometry and light guides
7. SiPM update
   1. First Article testing Update

Minutes

Attending: Christina, George, Pavlos, Kappos (Athens); Elton, Beni, Tim, Eugene, Yi, John, Beni; Zisis, Andrei (UofR); Will, Serguei (USM)

1. Announcements
2. Review of Action Items
3. Monitoring (Christina)
   1. Discussions in Athens have clarified some questions regarding the proposed monitoring system
      • The daisy chain scheme will not work unless the transistor (low impedance) is replaced by a mosfet (can be made into high impedance) without loss of performance
      • Discussion about implementing the star arrangement. This could include placing the control board inside the Bcal readout housing. This board would be supplied with a few cables for communication, power and trigger. 20-40 cables to the LED boards would be distributed within the housing box
      • Questions to be answered include:
        • Space inside the housing box for the control board
        • Space between the light guides to place the LED boards
4. USM update
   1. Waiting for main prototype boards (expect toward the end of the month)
   2. Alam is designing a NIM module for (slow) control of the multiplexors that distribute the signals inside the test box
   3. Implementation of the slow control software
5. Simulations
6. Electrical/cooling (Elton)
7. Geometry and light guides
8. SiPM update
   1. First Article testing Update