Difference between revisions of "Minutes-10-25-2012"

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== Production ==
 
== Production ==
  
- Dave deadened wire plane #29. Casey and Tina may come this Saturday to string wire plane #30. Will have the gas on Monday, hopefully by the end of the week will start testing the first package. Anatoly is refurbishing the cathodes for package #2. He removed the foil on four cathodes and started the fifth. We decided to stop with the refurbishment, before we are sure we have the foils. The foils are supposed to be end of November. Bill: do we need first article to check if there are problems. Since this is the same company (Allflex) they now how to do them and what do we need. We didn't have problems with the foils before, Anatoly tested all of them strip by strip. Initially there was some discoloration
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- Dave deadened wire plane #29. Casey and Tina may come this Saturday to string wire plane #30. Will have the gas on Monday, hopefully by the end of the week will start testing the first package. Anatoly is refurbishing the cathodes for package #2. He removed the foil on four cathodes and started the fifth. We decided to stop the refurbishment until we are sure we have the foils. The foils are supposed to be here at the end of November.  
  
- Vlad started applying HV on the new cells: could not reach more than ~1800V on two of the new cells. We suspect that the limitation comes from the gas, Nitrogen. We will try the same on a cell that worked before.
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- Bill: do we need first article for the foils to check if there are problems. Since this is the same company (Allflex) they now how to do them and what do we need. We didn't have problems with the foils before, Anatoly tested all of them strip by strip. Initially there was some discoloration on the copper and some wrinkles from the wheels of the machine, but they fixed the problems. Lubomir will discuss this with Roger, in case they see some problem to inform us. Eugene: we can use 5um foil, it will work except it will be thicker.  
  
 
== Cathode corrosion ==
 
== Cathode corrosion ==
  
- Vlad showed new results of the tests in the vacuum chamber at high temperature (~100degC), high humidity (~100%) in air. One of the samples showed >1MOhm after 4 days, while the other two are OK after 11 days. We have three samples, EPDM, Viton, and Viton+Apiezon, but the experiment was blinded, so we don't know which is which.
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== Engineering ==
 
== Engineering ==

Revision as of 18:30, 25 October 2012

October 25, 2012 FDC meeting

Agenda

  1. Production Construction Tracking (Dave)
  2. Corrosion tests (Vlad)
  3. Engineering (Bill)
  4. Electronics (Chris, Nick)
  5. Third package tests FDC E-log (Lubomir)
  6. Other