Difference between revisions of "Dec 5, 2011 SiPM Electrical and Cooling"

Revision as of 17:24, 6 December 2012

Action Items from previous meetings

1. Decide on cable connections for monitoring cable from Bcal wedge to patch panel. Consider electronics needed for pulsing system (Elton and Fernando) Decided to have a separate patch panel, which allows decisions on these other items to a later date
2. Make a metal die to punch holes in cooling mat to ease assembly. (Nick and Jim)
3. Give Jim a U-board with defective SiPM for devising extraction tool (Nick and Yi)
4. Determine granularity of LED bias and power, as well as multiplicity of trigger signals (Elton)
5. Check on official releases of the 3D model (Elton and Jim) All items will have a drawing. 3D models will be tagged in directories on the group disk.

Tentative Agenda

1. Announcements
2. Action Items
3. Schedule for production and testing (all)
4. mini-Bcal (Elton)
5. SiPM production testing (Yi)
6. Mechanical assembly (Jim)
7. Temperature compensation (Jack)
8. Electronic boards (Fernando and Chris)
9. Light guide gluing setup (Scot)

Minutes

Attending: Jim, Elton, Nic, Jim, Ivan, Yi, Chris

1. Announcements
2. Action Items
3. Schedule for production and testing (all)
   1. Light guides
      • Approximately 1400 have been delivered and 400 more arrived today.
      • Manpower for the gluing has been identified, but will start the week before the break
      • Will check that tooling does the job and start some dry tests before starting. If necessary make any modifications to procedures/setup.
   2. Bcal assemblies (mechanical)
      • List and sequence of pre-assembly tasks was generated by Elton, Chris, Nic and Jim following the meeting proper (see next)
      • A better estimate for total time to complete the pre-assembly tasks is needed. However, it clearly needs dedicated manpower next month to complete the tasks by February
   3. List of mechanical pre-assembly tasks
      1. Fabricate Cooling Tubing Assembly (Note: fixturing is complete but not tested)
         • Cut
         • Braze fittings onto tube
         • Bend tube
         • leak test fittings
      2. Gluing
         • glue tube into cooling plate
         • glue thermistor onto boards
         • glue RTD assembly. (Note: Chris needs to provide RTDs with wires soldered already)
         • install 2 tube clamps onto plate
      3. Assemble/sort
         • insert threaded rods into spacers
         • sort hardware into labeled bins for use during assembly
4. mini-Bcal (Elton)
5. SiPM production testing (Yi)
6. Mechanical assembly (Jim)
7. Temperature compensation (Jack)
8. Electronic boards (Fernando and Chris)
9. Light guide gluing setup (Scot)