Difference between revisions of "Minutes-4-25-2013"
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= Agenda = | = Agenda = | ||
− | # Production [http://www.jlab.org/Hall-D/detector/fdc/production/FDC_Construction_April_25_2013.xlsx Construction Tracking] | + | # Production [http://www.jlab.org/Hall-D/detector/fdc/production/FDC_Construction_April_25_2013.xlsx Construction Tracking] |
#* Third package status | #* Third package status | ||
#* Spare package | #* Spare package | ||
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== Production == | == Production == | ||
− | - | + | - Third package: Casey installed the manifolds without tightening the compression fittings, but as it turned out from the cooling system tests (see below), we have to check the manifolds with high pressure before finishing the installation. |
− | - | + | - Spare package installation: installation table is ready, Casey made the threaded rods that are longer by 6cm for this package. Next week (after we are done with the third package) we will start putting O-rings on two spacer rings and one type-1 cathode. The plan is to install two cells at once. The last two cells will be with the two thicker spacer rings, to be used to test the cluster counting technique. It turned out it that we can use the standard gas (40/60) for these studies instead of the Helium mixture. Due to the lower drift velocity with the standard gas one can get a good cluster separation, just we will have up to ~20 microsec drift time, compared to ~7 microsec with the Helium gas. |
== Installation == | == Installation == | ||
− | - | + | - |
- For the FDC tests outside of the magnet we will have to install scintillators at the top and bottom of the installation cart for cosmics trigger (Bill will work on the supporting frames). Given the delay with the fADC125 Fernando thinks it's not likely to be able to make self-triggering from the fADCs, so we should relay only on external trigger. | - For the FDC tests outside of the magnet we will have to install scintillators at the top and bottom of the installation cart for cosmics trigger (Bill will work on the supporting frames). Given the delay with the fADC125 Fernando thinks it's not likely to be able to make self-triggering from the fADCs, so we should relay only on external trigger. |
Revision as of 15:56, 25 April 2013
April 25, 2013 FDC meeting
Agenda
- Production Construction Tracking
- Third package status
- Spare package
- Corrosion tests at MePhi: results, [1], [2], [3], [4], [5], [6], [7]
- Installation (Lubomir, Bill)
- FDC installation document
- Practicing at Blue Crab
- Engineering (Bill)
- Electronics (Chris, Nick)
- Full electronics tests FDC E-log (Beni)
- Other