Revision as of 23:38, 19 May 2011

May 19, 2011 FDC meeting

Agenda

Production (Dave)
- Cathodes
- Wire planes
- End windows: epoxy problem
Engineering (Bill)
- Vibration measurements at Blue Crab
- Pin rail modification
- Other: field wire report from Olga
Electronics status(Fernando, Chris)
Chamber testing (Beni)
- Equipment for Blue Crab
- Timing with fADC125
Other

@@ Line 29: / Line 29: @@
 - On one end window the epoxy didn't cure, but a sample from the same epoxy (and the left part in the cup) did cure. We suspect the surface was contaminated. Eugene: it's possible the epoxy was not mixed good enough. Also the surface on the end window is the only surface on the g10 frames that is not machined, and it is very smooth. On the second end window done in the same way the epoxy cured better. Most likely it was a contamination problem: we cleaned better the second end window. For the future production we will sand the surface of the frame.
-- Two wires were broken on the first production frame while removing it from the strong-back. Bill will make a tool that separates the frame from the strong-back. The pin rail was taken for fixing at Vision Machine and we expect it back hopefully later this evening. After that we can fix the two wires.
+- Two wires were broken on the first production frame while removing it from the strong-back. Bill will make a tool that separates the frame from the strong-back. The encoder on the motion stage doesn't work and most likely it is the bulb on the encoder head to be blamed. It is an old model, so if we need an encoder we have the replace the whole device. For the first production chamber  The pin rail was taken for fixing at Vision Machine and we expect it back hopefully later this evening. After that we can fix the two wires.
 == Engineering ==