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Michigan B184 Update July 8, 2005 |
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1. Phase 1
EIL1AC01, EIL1A03: finished
EIL1C09: Doing HV on Mezz card scan. This chamber had no pressure
when opened. We first measured the leak rate at 3 bar,
giving a leak rate less than 10 mbar/day. Then we installed
the copper tubes and remeasure the leak rate with our DAQ
system, taking data every 10 minutes. Now the leak rate of
this chamber appears to be good (a few mbar/day) for over
40 hours. So there is no problem for this chamber in terms
of gas leak).
EIL2A03, EIL2A11: flushing gas and will measure leak rate over
weekend.
Hopefully we can finish the last 3 BMC chambers, and therefore
finish ALL US chambers for the phase I next week.
UW:
Four BIM chambers: still waiting for HV cards from Italy.
2. Phase 1.9
Following chambers have been finished
EML1C15, EML2C01, EIS1A08
Zhengguo and David