Minutes-4-14-2011

April 14, 2011 FDC meeting

Agenda

1. Production status (Dave)
2. Electronics
   • Status (Fernando,Chris)
   • fADC125 requirements
   • Cathode foil inspection
3. Engineering
   • Status (Bill)
   • Radiation tests with conductive tape (Lubomir)
4. Chamber testing (Lubomir)
5. Other

Minutes

Participants: Eugene, Bill, Dave, Chris, Simon, and Lubomir.

Production

- 11 cathodes were inspected so far; one panel was damaged by us because of incorrect packaging.

- the first production cathode was glued tensioned and the frame was glued to it; cutting the flaps and the holes is next. Some of these procedures still require signatures. Cutting the second production cathode started with problems with the cutter. Bill thinks it is the granite surface that damages the blades. Using harder blade and treating the granite surface must help. Bill also made modifications to the cutter to prevent wobbling of the blade.

- the PCB ring was glued for the first production wire frame. Tests with light show the surface at the seams is not perfectly flat. Anatoly will work on this. Next steps: trimming the Rohacell OD on the wire frame and laminating the PCB ring. We will accelerate this so that we can work on the wire frame in parallel with the cathodes. Bill asked if it will be acceptable to use parafin to cover some parts of the Rohacell OD that is needed for the ultrasonic cleaning. Lubomir will investigate this.

- We received the solder wire (0.65mm) from UVA that we will use for wire soldering at the beginning. Al has progress with the software (for the Parker controller) used to find the wire position.