Jan 10, 2013 SiPM Electrical and Cooling
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Revision as of 17:33, 28 February 2013 by Elton (Talk | contribs) (moved Jan 10, 2012 SiPM Electrical and Cooling to Jan 10, 2013 SiPM Electrical and Cooling: wrong year)
Action Items from previous meetings
-
Check that we have all RTDs already, otherwise order (Chris)Chris found the box of 100 that Jim had ordered. -
Jim to send BOM for mechanical parts to Chris. Chris to decide on type and size of bins needed to hold sorted parts. -
Confirm with Fernando that the labeling of boards U1-U48 and D1-D48 is ok (Elton) -
Make decisions on how to treat sensors with high dark rate (Elton)They satisfy our specifications. Use along with others.
Tentative Agenda
- Announcements
- Action Items
- Schedule for production and testing (all)
- mini-Bcal (Elton)
- SiPM production testing (Yi)
- Mechanical assembly (Jim)
- Temperature compensation (Jack)
- Electronic boards (Fernando and Chris)
- Light guide gluing setup (Scot)
Minutes
Attending:Fernando, Chris, Nick, Elton, Yi, Ivan, Jim, Jack, Eugene
- Announcements
- Action Items
- Light guides (Elton)
- Tina, Scot and Elton will begin setting up the gluing procedure on Monday at 10 am in the ESB
- The goal is to glue guides on four light guides per week in production mode. It will take some time to verify the gluing procedure and begin production
- Templates from tedlar for the light guide wrapping will be made next week. Jim gave Elton full-size drawings for the templates, which can be used to make the first few sets.
- Schedule for production and testing (all)
- Electronic board jumper settings
- Should be completed in a month
- Mechanical preparation of all parts will be done in February
- SiPM from USM:
- 640 are still at USM, all tested. 480 are packed and ready for shipment.
- Last 360+10 units from Hamamatsu have been stuck in customs. They will be returned to the US and rerouted through JLab.
- Assembly can start once the mechanical preparation is complete, which will be in March.
- Electronic board jumper settings
- SiPM production testing (Ivan)
- Ivan will get back to making measurements of cross talk and after-pulsing next week
- He is returning to Russia at the end of the month.
- Mechanical assembly (Jim)
- Anodizing: PO has not yet been awarded, expected soon
- Mechanical parts, including the cooling tubes, have been ordered. They are expected in a couple of weeks
- Tom has promised to have people-power available to prepare cooling tubes and plates and assemble mechanical parts starting in February
- Temperature compensation (Jack)
- All Jumper assignments have been made and sheets are being prepared
- Electronic boards (Fernando and Chris)
- All 100 readout boards have been received. (Note: First article boards were received and approved in mid Dec)
- Boards look very clean with beautiful solder joints
- Six boards have been checked with test voltages close to zero and 6 mV in the worst case. (The specification is 10 mV).
- Light guide gluing setup (Scot)
- Other items (Fernando)
- Low voltage distribution
- Chris is doing a redesign
- New quote for cables, including a quote from TigerDirect for in-house custom cable.
- Monitoring distribution box
- This will be designed after the low voltage distribution box is completed.
- Low voltage distribution