Difference between revisions of "Minutes-9-8-2011"
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# Chamber testing at EEL126 (cell#2) (Beni) | # Chamber testing at EEL126 (cell#2) (Beni) | ||
# Other | # Other | ||
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= Minutes = | = Minutes = | ||
| − | Participants: Bill | + | Participants: Bill, Dave, Simon, Beni, Elton, Mark, and Lubomir. |
== Production == | == Production == | ||
| − | - | + | - Dave: The capacitors were changed on all wire frames needed for the first production package. Wires frame #6 was populated, wires deadened and will be put in package today or tomorrow. Wire frame #7 is out of the stringing table and Chris will put the elements on it tomorrow. The last two cathodes for the first package: started putting the rigid-flexes on type-1; on type-2 the frame was glued and on Monday the Mylar foil will be glued. |
| − | - | + | - After testing the first cell of the production package we found the following problems: |
| + | *One wire was broken between the pad and the epoxy | ||
| + | |||
| + | <!-- | ||
- In the construction tracking linked above, at the second page, there's a table about the wire frames explaining differences in the material/procedures used: Epon or Epo-lite, with or without Humi-seal, capacitors replaced/not replaced, and whether the wires were deadened. Starting from frame #6 and up (6 is the consecutive number, not the frame number that is labeled) on all the frames the caps were/will be replaced without Humi-seal and Epon was/will be used instead of Epo-lite. If we exclude the first four wire planes as spares, there's only one (#5) production frame on which the caps were not replaced, but still Epon was used. We discussed if we want to replace the caps on all the frames and how, or if we just want to build new wire frames using the latest technology. Bill: we need to replace the old caps everywhere. However it will be very difficult, time consuming and risky: one can easily damage wires especially on the frames with Humi-seal on the caps. | - In the construction tracking linked above, at the second page, there's a table about the wire frames explaining differences in the material/procedures used: Epon or Epo-lite, with or without Humi-seal, capacitors replaced/not replaced, and whether the wires were deadened. Starting from frame #6 and up (6 is the consecutive number, not the frame number that is labeled) on all the frames the caps were/will be replaced without Humi-seal and Epon was/will be used instead of Epo-lite. If we exclude the first four wire planes as spares, there's only one (#5) production frame on which the caps were not replaced, but still Epon was used. We discussed if we want to replace the caps on all the frames and how, or if we just want to build new wire frames using the latest technology. Bill: we need to replace the old caps everywhere. However it will be very difficult, time consuming and risky: one can easily damage wires especially on the frames with Humi-seal on the caps. | ||
Revision as of 15:01, 8 September 2011
September 8, 2011 FDC meeting
Agenda
- Production Construction Tracking (Dave)
- Status
- Additional testing procedures
- First package tests (Lubomir)
- Engineering update (Bill)
- Electronics update (Chris)
- New testing card for the cathodes
- Chamber testing at EEL126 (cell#2) (Beni)
- Other
Minutes
Participants: Bill, Dave, Simon, Beni, Elton, Mark, and Lubomir.
Production
- Dave: The capacitors were changed on all wire frames needed for the first production package. Wires frame #6 was populated, wires deadened and will be put in package today or tomorrow. Wire frame #7 is out of the stringing table and Chris will put the elements on it tomorrow. The last two cathodes for the first package: started putting the rigid-flexes on type-1; on type-2 the frame was glued and on Monday the Mylar foil will be glued.
- After testing the first cell of the production package we found the following problems:
- One wire was broken between the pad and the epoxy
