Difference between revisions of "Minutes-1-26-2012"
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# Production [http://www.jlab.org/Hall-D/detector/fdc/production/FDC_Construction_January_26_2012.xlsx Construction Tracking] (Dave) | # Production [http://www.jlab.org/Hall-D/detector/fdc/production/FDC_Construction_January_26_2012.xlsx Construction Tracking] (Dave) | ||
#* Production update | #* Production update | ||
| − | # | + | # First package testing status (Lubomir) |
# Engineering update (Bill) | # Engineering update (Bill) | ||
# Electronics update (Chris) | # Electronics update (Chris) | ||
#* LV cabling | #* LV cabling | ||
| − | |||
# Other | # Other | ||
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== Production == | == Production == | ||
| − | - Dave: wire board #20 (first cell of the 3rd package) is ready for wire deadening; waiting for the microscope results from Olga to make sure the new timing/currents for electroplating is OK. | + | - Dave: wire board #20 (first cell of the 3rd package) is ready for wire deadening; waiting for the microscope results from Olga to make sure the new timing/currents for electroplating is OK. Wire board #21 ready for tension measurements, wire board #22 ready for stringing, wire board #23 was laminated. Cathodes: the two type-3 two tyoe-1 and one type-2 ready. |
| + | |||
| + | - Casey is modifying the frame to install the second package on the rotational brackets (taken from the first package, see discussions later). After the second package is moved the tooling needed for the third package will be installed in the testing room. It includes 14 hubs and three metal pins to be taken from package #2. Package number #2 will remain with three metal pins and plastic rods only. | ||
| + | |||
| + | == First package testing status = | ||
| − | - | + | - First package moved to EEL 126 on Monday; some problems discussed below. |
| + | |||
| + | - Gas problems: initially it was bubbling at >220ccpm (compared to 40-50ccpm at Blue Crab), but there was no obvious gas leakage except some (1x10^-4 on the leakage detector scale) at the southern side where the input gas connectors were. Today the input and output connectors were swapped and the problem almost disappear, which indicates the leakage was somewhere at gas connectors. Has to be found and fixed later! | ||
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| + | - HV problems: the CAEN HV supply module has current resolution of 500nA | ||
| − | |||
== Engineering == | == Engineering == | ||
Revision as of 19:07, 26 January 2012
January 26, 2012 FDC meeting
Agenda
- Production Construction Tracking (Dave)
- Production update
- First package testing status (Lubomir)
- Engineering update (Bill)
- Electronics update (Chris)
- LV cabling
- Other
