Minutes-12-2-2010
December 2, 2010 FDC meeting
Tentative Agenda
- Production (David)
- Blue Crab status
- Frame production
- ETC change request for FDC Tim's new schedule
- Electronics (Fernando, Chris)
- PCB status
- Cathode foil production
- Other
- Engineering (Bill, David)
- Wire stringing table model, camera, linear unit, weight
- Movement system and position sensor
- Other
- Full-scale prototype
- fADC to F1TDC comparison with 40/60 (Beni)
- resolution simulations (Simon) FDC Log Book, page 543
- Other
Minutes
Participants: Bill, Chris, Glenn, Eugene, Dave, Simon, Beni, and Lubomir.
Production
- Blue Crab status: the clean room construction started this week, walls are erected already.
- Wire frames (Bill): all wire frames inspected, we have 30 ready to go (out of 32), one is a little off the specifications, and another one is way off. Next step: gluing and laminating the PCBs that should start next week at Blue Crab. 16 cathode frames are ready; important is to check the depth of the O-ring groove.
- New schedule: we discussed the feasibility of the package full tests scheduled to start at the beginning of 2012. For that we will need enough electronics to equip one full package: 12 F1TDCs, 36 fADCs, 24 anode and 108 cathode cards. According to Fernando we will have the cards and the fADCs by June 2012 and the F1TDCs by Sep 2012. Eugene looked at the last schedule for the electronics and concluded that actually we will have a good fraction of the electronics ready by the beginning of 2012. A delay is expected with the F1TDCs and we discussed options to replace those with other types of TDCs. Beni raised the question about the additional modules needed for the DAQ, since we are going to have at least two crates. All these questions require additional information from Fernando and other people, so we will continue the discussion off-line and on the next meeting.
Electronics
- Chris cleaned and tested with 2500V channel by channel all the first article PCBs. So, now we have two sets of PCBs ready to be laminated. For the cleaning, he used first Vigon bath but was not enough, so he did the final cleaning with Flux-off bottles. The rest of the PCBs that were sent back to the company for cleaning are still there. Fernando ordered two solder types for the wire soldering that we will test.
- Roger who is now at the Allflex facility in Minnesota, informed us that the production of the first foils started. On Tuesday two panels were produced, one of them developed a wrinkle during the photo-resist stripping. We can still use such foils for practicing; it's good we have a lot of spare material. We don't know yet when they are going to ship the first article. Still, we decided to move two tables inside the Hall B clean room tomorrow afternoon, so that we have the place ready for the foil inspection.
