Difference between revisions of "Minutes-9-27-2012"
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- Dave: Tina is soldering wire frame #29. Mike is working on the PCB ring for #30. Five new g10 wire frames (we asked for four) were made by Vision machine, then we laminated the Rohacel rings and sent them back to Vision for the fly cut. | - Dave: Tina is soldering wire frame #29. Mike is working on the PCB ring for #30. Five new g10 wire frames (we asked for four) were made by Vision machine, then we laminated the Rohacel rings and sent them back to Vision for the fly cut. | ||
| − | - Vlad: testing the first three cells of package #1. The oxygen went down to 170ppm, we started flushing on Sunday. All the channels were tested with a source and scope and are working fine. One pre-amp card was noisy, has to be replaced. | + | - Vlad: testing the first three cells of package #1. The oxygen went down to 170ppm, we started flushing on Sunday. All the channels were tested with a source and scope and are working fine. One pre-amp card was noisy, has to be replaced. Currents are higher in all the cells: |
| − | - | + | - Lubomir: on Sunday Vlad found the gas bottle at Blue Crab supplying gas to the first package and the testing vacuum chamber, was empty due to high consumption of the testing chamber. The vacuum pump |
== Cathode corrosion == | == Cathode corrosion == | ||
Revision as of 17:18, 27 September 2012
September 27, 2012 FDC meeting
Agenda
- Production Construction Tracking (Dave)
- First package tests (Vlad)
- Cathode corrosion
- Recent SEM results Viton+Apiezon not cleaned, Viton+Apiezon cleaned with alcohol, Viton+Apiezon cleaned with xylene
- Engineering (Bill)
- Electronics (Chris, Nick)
- Third package tests FDC E-log (Beni)
- TDR, pages 132-143 (Lubomir)
- Other: plots for Eugene's talk
- packages: #1,#3, #4
- corrosion: damaged cathode, EPDM optical, EPDM spectrum, Viton+Apiezon spectrum
- oxygen issue: g10 coating, and Viton+Apiezon reduce O2 from ~10,000ppm to <100ppm.
- test results: Wire Resolution from the full-scale prototype 40/60% Ar/CO%, 5*10^4 gas gain
- Some pictures from the TDR: FDC system, one cell elements, cell section, wire frame lamination, and other in that directory
