Difference between revisions of "Minutes-5-10-2012"
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| − | May | + | May 17, 2012 FDC meeting |
= Agenda = | = Agenda = | ||
| − | # Production [http://www.jlab.org/Hall-D/detector/fdc/production/ | + | # Production [http://www.jlab.org/Hall-D/detector/fdc/production/FDC_Construction_May_17_2012.xlsx Construction Tracking] (Dave) |
#* Production status | #* Production status | ||
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#* Third package tests (Lubomir) | #* Third package tests (Lubomir) | ||
# Engineering update | # Engineering update | ||
# Electronics update (Chris) | # Electronics update (Chris) | ||
| + | #* Grounding | ||
# Tests with first package in 126 [https://halldweb1.jlab.org/elog-halld/FDC FDC E-log] (Beni) | # Tests with first package in 126 [https://halldweb1.jlab.org/elog-halld/FDC FDC E-log] (Beni) | ||
# Other | # Other | ||
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= Minutes = | = Minutes = | ||
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- Beni: HV now is 1600V to avoid afterpulsing, the efficiency is ~90% except two cells with areas below 80%. The position resolution is still of the order of 300 microns. Beni explained the procedure he uses to estimate the resolution: the incident angle from the external tracking and then comparing the positions from parallel wires the pairs of cells that have wires with the same direction. We discussed different sources that could make the resolution worse: how parallel the wires on the different cells are, the time to distance conversion in presence of oxygen and low efficiency for big drift times. Also Beni wants to look in the external chambers showing some uneven distributions of the cosmics. | - Beni: HV now is 1600V to avoid afterpulsing, the efficiency is ~90% except two cells with areas below 80%. The position resolution is still of the order of 300 microns. Beni explained the procedure he uses to estimate the resolution: the incident angle from the external tracking and then comparing the positions from parallel wires the pairs of cells that have wires with the same direction. We discussed different sources that could make the resolution worse: how parallel the wires on the different cells are, the time to distance conversion in presence of oxygen and low efficiency for big drift times. Also Beni wants to look in the external chambers showing some uneven distributions of the cosmics. | ||
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Revision as of 18:03, 16 May 2012
May 17, 2012 FDC meeting
Agenda
- Production Construction Tracking (Dave)
- Production status
- Third package tests (Lubomir)
- Engineering update
- Electronics update (Chris)
- Grounding
- Tests with first package in 126 FDC E-log (Beni)
- Other
