Jan 12, 2011 SiPM Electrical and Cooling

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Action Items from previous meetings

  1. U-boards need to be ordered for the mini-Bcal (Chris) 10 boards ordered to check before ordering more
  2. Cables need to be ordered for the SiPM production test setup (Chris) Cables have been ordered
  3. Values of trim resistors for nominal operation to Chris (Jack). Chris to add them to the BOM.
  4. Order any missing mechanical parts for assembly of mini-Bcal (Jim) All parts are in hand. Cooling plates are being modified to ease attachment of cooling tube.

Tentative Agenda

  1. Announcements
  2. Action Items
  3. Schedule, reporting, and manpower (Elton)
  4. SiPM production testing (everyone)
  5. Mechanical assembly (Scot)
  6. Mechanical (Jim)
  7. Mechanical drawings (Chuck)
  8. Temperature compensation (Jack)
  9. Preamp-summing (Fernando/Chris)
  1. SiPM testing (Ivan)

Minutes

Attending: Chris, Ivan, Elton, Jim, Yi, Carl, Eugene, Tom

  1. Announcements
  2. Action Items
  3. Schedule, reporting, and manpower (Elton)
  4. SiPM production testing (everyone)
    • One electronics board is ready. Carl will pick it up and install. Chris will assemble the other three shortly
    • Chris has the cable to connect to bias power supply. Carl can also pick that one up
    • Testing of light uniformity is done, a calibration is still needed.
    • Yi is working with computer center to establish communication with PS. All other devices are connected.
    • Can start checking testing station next week.
  5. Mechanical assembly (Scot)
    • Scot will be back (limited mobility) next week.
    • Can start testing gluing procedure next week when fixture is repaired.
    • Plan is to glue in the ESB, where all modules will be equipped with light guides and readout electronics.
  6. Mechanical (Jim)
    • Mechanical parts ordered. Cooling plate is being modified to ease installation of cooling tube.
    • Pins ordered to fix light guide gluing fixture.
  7. Mechanical drawings (Chuck)
  8. Temperature compensation (Jack)
    • Still needs to send values of trim resistors to Chris.
  9. Preamp-summing (Fernando/Chris)
    • Revised board with correct standoff holes is ready for checking by Fernando
    • Will send out to fab as soon as ready
    • Expect to have operational boards by third week in Feb.
  10. SiPM testing (Ivan)
    • Laser has been installed in the lab. Waiting on LSOP from Fernando to power up and use.
    • Should start timing measurements with laser next week.