Revision as of 18:41, 28 October 2010

October 21, 2010 FDC meeting

Tentative Agenda

Production (David)
- Blue Crab status [ttp://www.jlab.org/Hall-D/detector/fdc/production/BCplan.pdf sketch]
- Frame lamination FDC Log Book, page 533
Electronics (Fernando, Chris, Roger)
- Update on PCBs
- Cathode foil and rigid-flex procurement
- fADC125/F1TDC synchronization (Beni, Gerard) FDC Log Book, page 531
Engineering (Bill, David)
- Wire stringing
- Cathode foils: plans for inspection, storage, and cathode lamination
Full-scale prototype tests (Lubomir)
- gas gain measurements FDC Log Book, page 530
- other studies with fADC FDC Log Book, page 532
Other

@@ Line 34: / Line 34: @@
 - Chris was investigating different ways of cleaning the PCBs using Vigor flux-off. We discussed if we can buy an ultrasonic cleaner 42"x18"x6" that will be used also to clean the wire frames after soldering the wires for $5500. Glenn agreed.
-- Fernando: the first article signal cables will arrive by mid November and Chris is working on a board to be used for testing. The solder material (japanese ) recommended from UVA is ano longer available. Chris ordered similar materialial from
+- Fernando: the first article signal cables will arrive by mid November and Chris is working on a board to be used for testing. The solder material (japanese) recommended from UVA is no longer available. Chris ordered similar materialial from other company to exercise. Working on the sole source procurement of the ASICs. Fermilab is also intersted in the same ASICs and Fernando discussed if we can share with Fermilab the costs
+for the mask (~$100K).
+-
 - Chris: Inspecting the first article (8, two of each) populated PCBs. Initially they could hold a maximum voltage of ~1500V.The problem: flux from the soldering under the capacitors. Chris cleaned 5 channels (using some flux-off spray) and they could hold 2500V without problems. Fernando decided to go ahead with the full production by requiring the company to improve the cleaning procedures.