Difference between revisions of "Minutes-4-5-2012"
From GlueXWiki
| Line 20: | Line 20: | ||
== Production == | == Production == | ||
| − | - Dave: Chris put components on two wire planes for package #3, they remain to be deadened. Anatoly is gluing | + | - Dave: Chris put components on two wire planes for package #3, they remain to be deadened. Anatoly is gluing daughter cards on cathodes for package #4. One end window for package #4 that was recently made has a wavy mylar surface. We suspect the surface of the transfer ring was slippery, since before it was used to tension clear mylar for the gusset ring. The rule will be always to sand the transfer ring before using for the end windows. We will have to redo the end window: first sand the old mylar and tension it again. Tomorrow, after the first cell of package #3 is assembled, we will resume stringing wire boards; stringing was suspended for several weeks due to the oxygen problem. |
| − | - On Monday we disassembled the third package. The old O-rings of the two end windows and the wire frame for the first cell were removed using aceton to clean the super glue. Casey | + | - On Monday we disassembled the third package. The old O-rings of the two end windows and the wire frame for the first cell were removed using aceton to clean the super glue. Casey invented a cover for the wires to prevent aceton spills. Then the grooves were double coated with Hysol, Viton O-rings were installed today and we assembled the first cell right after the meeting. Dave wrote the procedures for the replacement of the O-rings, waiting now for signatures. The depth of the groove after coating: according to Bill the depth should not be reduced by more than 10 mils; Dave measured it: 1-5 mils. |
| + | |||
| + | - Two or three type-1 frames have to be "converted" into type-2. Bill explained how to do this: put Scotchweld in the groove, use razor blade to level it and after curing possibly sand it. | ||
== Oxygen contamination in the first package == | == Oxygen contamination in the first package == | ||
| − | - | + | - Lubomir started working on a document describing the oxygen tests. The most important table with the measurements using the testing chamber is linked above. Important step from configuration #7 to #8 |
== Engineering == | == Engineering == | ||
Revision as of 12:37, 6 April 2012
April 5, 2012 FDC meeting
Agenda
- Production Construction Tracking (Dave)
- New procedures for the O-ring replacements
- Production status
- Results from the oxygen studies (Lubomir)
- Engineering update (Bill)
- Electronics update (Chris)
- Possibilities for cluster counting (Lubomir)
- Other
