Difference between revisions of "Minutes-3-14-2013"
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- Dave (not at the meeting) prepared the Production Tracking: all cathodes foe the spare package are ready. We will built also one extra cathode that is tensioned now. Wire planes: Chris is coming tomorrow to Blue Crab to finish with the population of the last two wire planes. Then it will remain four wire planes (one will be extra spare) to be deadened and we are done with the spare parts. | - Dave (not at the meeting) prepared the Production Tracking: all cathodes foe the spare package are ready. We will built also one extra cathode that is tensioned now. Wire planes: Chris is coming tomorrow to Blue Crab to finish with the population of the last two wire planes. Then it will remain four wire planes (one will be extra spare) to be deadened and we are done with the spare parts. | ||
− | - On Friday package #1 was moved from 126 to Blue Crab and then package #2 - from Blue Crab to 126. After connecting #1 to Nitrogen it was found cell #5 is leaking; turned out the barb connector for the guage tube was loosely connected. These connectors are glued initially with super glue, but later on some of them (and not on this one) green epoxy was added. Casey was able to glue a new barb connector (not easy to reach the spacer ring since you have only 5mm between the cathode and the wire frame) and | + | - On Friday package #1 was moved from 126 to Blue Crab and then package #2 - from Blue Crab to 126. After connecting #1 to Nitrogen it was found cell #5 is leaking; turned out the barb connector for the guage tube was loosely connected. These connectors are glued initially with super glue, but later on some of them (and not on this one) green epoxy was added. Casey was able to glue a new barb connector (not easy to reach the spacer ring since you have only 5mm between the cathode and the wire frame) and fixed the problem. Then green epoxy was added on all the connectors of packages #1 and #4 that didn't have it before (5 out of 12). Bill wants to try with Casey using shoe glue that better sticks to polyethylene. |
− | - | + | - Package #3 repair: on Tuesday hubs were installed on the top side and the package put upside down on the installation table. To access cell #6 we had to remove only the end window and the bottom cathode (type-3). We found 1-2mm hair/lint on a field wire in HV sector 2, exactly where the HV problem was. After removing it we closed the package and started flushing it. It took only 4 people for two hours for this operation, but placing back the ground clips, pre-amps, cooling tube (all had to be removed) and restoring the HV connections will take much longer. The plan is to start testing the package tomorrow. |
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== Installation == | == Installation == | ||
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== Engineering == | == Engineering == |
Revision as of 17:43, 14 March 2013
March 14, 2013 FDC meeting
Agenda
- Production Construction Tracking (Dave)
- Spare parts
- Package #3 repair
- Installation schedule (last week), schedule (this week)(Lubomir)
- Engineering (Bill)
- Manifold installation first pair isntalled
- Electronics (Chris, Nick)
- Tests at EEL126 FDC E-log (Beni)
- Other