July 5, 2011 SiPM Electrical and Cooling
From GlueXWiki
Action Items from previous meetings
- Develop front and back views of jumper sheets. (Jack)
- Check into AC units based on Peltier coolers for SiPM production tests (Fernando)
- Review Fcal LED and controller monitoring boards (Fernando)
- Decide on size of overlap of voltage bins for the SiPMs (Yi and Jack)
Tentative Agenda
- Announcements
- Action Items
- Schedule, reporting, and manpower (Elton)
- SiPM production testing (everyone)
- SiPMs assignment for new boards
- Mechanical assembly (Scot)
- Mechanical (Jim)
- Mechanical drawings (Chuck)
- Temperature compensation (Jack)
- Preamp-summing (Chris)
- Light guide gluing setup
Minutes
Attending:Jack, Nick, Chris, Elton, Jim, Eugene
- Announcements
- Action Items
- Schedule, reporting, and manpower (Elton)
- SiPM production testing (everyone)
- SiPMs assignment for new boards
- Decided that a "random" distribution of SiPMs might be best for this set of boards.
- Mechanical (Jim)
- Glue is in for RTD and Cooling tubes
- Converting SiPM machined tray to molded part, which includes bosses
- Joseph is putting together box for testing the readout.
- Chiller: Check range of temperatures can cool SiPM in the range of 5 - 60 deg C. (The higher temperatures are needed for annealing the SiPMs)
- Temperature compensation (Jack)
- Has code operational that can be used to determine overlaps between jumper settings. He will coordinate with Yi.
- Also starting to develop the front and back views for jumper settings.
- Preamp-summing (Chris)
- All 4000 populated U-boards are completed
- Transition boards and thermistor boards (production) have been ordered
- All HFL and UFL cables are on order and most are in but not all
- The two readout boards are out to be populated, expected in about 10 days.
- Thermal mats need to be ordered.
- Cooling loops need to be brazed in.
- 14-pin trim trio connectors are in, replacing the three previous connectors
- The circuit board and micro-Dsub connector for the monitoring board needs to be made. Chris and Jim will discuss after the meeting.
- Light guide gluing setup
- The vent hoods are being fabricated
- Light guide production has been delayed due to a broken part in the milling machine. Light guides are now expected in a couple of weeks.