Difference between revisions of "Minutes-5-26-2011"
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= Minutes = | = Minutes = | ||
− | Participants: Eugene, Bill, Dave, Chris, Simon, Beni, and Lubomir | + | Participants: Eugene, Bill, Dave, Chris, Simon, Beni, Caleb Massey (summer student) and Lubomir. |
== Production == | == Production == | ||
− | - Dave: | + | - Dave: HVAC didn't work starting Tuesday evening (likely), and today Ron Bartek replaced a fuse in line with the transformer that failed before, but was replaced with a more powerful one. So, the same problem again; people from the clean room company will be there next week. Wednesday and Thursday morning the humidity was 50-60% and all the gluing was postponed. |
− | - | + | - Cathodes: two ready, except gluing the daughter cards to the frame, that will be done today. Third one is ready for gluing the rigid-flexes. The fourth has been tensioned and the frame glued. Fifth cathode foil is ready, as well. End window: Anatoly is finishing the first one. |
− | - | + | - Wire frames: the two wires of the first wire frame were fixed. We will keep it on the table to study the sensor problem: today we had problems not only with the field wires, but also with the sense wires. Dave will coordinate with Ron Bartek how to turn off the AC units to study the vibration effects. Caleb will work on this problem. Eugene pointed out that before trying to mitigate the vibrations we have to make sure that they are the origin of the sensor problem. |
== Engineering == | == Engineering == | ||
− | - | + | - |
− | + | ||
- Report from Olga (linked above) shows some contaminated spots on the filed wires. For the first report she did before, she cleaned the field wire samples ultrasonically and maybe that's why she didn't see the contamination before. It's not critical for the field wires to have some contaminated spots, also we may have to clean them with the ultrasonic cleaner before stringing. This is another possible explanation for the field wire sensing. | - Report from Olga (linked above) shows some contaminated spots on the filed wires. For the first report she did before, she cleaned the field wire samples ultrasonically and maybe that's why she didn't see the contamination before. It's not critical for the field wires to have some contaminated spots, also we may have to clean them with the ultrasonic cleaner before stringing. This is another possible explanation for the field wire sensing. | ||
Revision as of 15:43, 26 May 2011
May 26, 2011 FDC meeting
Agenda
- Production (Dave)
- HVAC status
- Cathodes
- Wire planes
- Other
- Engineering (Bill)
- Pin rail modification: CMM measurements
- Rigid-flex gluing
- Other: encoder, parts/tools for chamber assembly
- Electronics (Fernando, Chris)
- Update
- Package grounding scheme
- Chamber testing (Beni)
- Other