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Michigan B184 Update January 21, 2005 |
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Definitions of the numbers listed in Summary table:
N(total) = number of chambers to be worked or reworked at CERN in phase I
N(finished) = Number of chamber that have been finished
N(this week) = number of chamber
1. Summary table
N(total) N(finished) N(this week)
UM 80 79 0
BMC 80 0 0
UW 80 44 8
List of chambers finished this week: 8
EML2C05,
EIL4A09, EIL4C09, EIL4C11
EMS2C10, EMS2C04, EMS2C12, EMS2A04
2. Chambers in progress
EIL4C13: CR test finished. need cabling for Tsensors and inplane system.
EIL4A13: Taking CR data
EIL4A11: Ready for CR test
EML1A09: CR test finished, need to glue and test 8 Brandeis T sensors
EML2C07: Doing Mezz card scan
EIL4C15: Opened box today
3. Problems and other issues
a) Crane operatiom Movement in BLDG180 is still not possible.
b) Great effort has been put to determine the cable lengths and make
them. We are overcoming the bottle neck.
c) Tube ML1-1-54 of EIL4C13 has high dark current, about 0.3 mA at
3.4kV. After taking all means we can think about, the high dark
current stays. We then have to disconnect this tube by cutting
the resistor on HV board.
d) Two BMC chambers (EMS1C12, EMS1A14) are now ready to work with in
Bldg 184. Bingyun and I will work with Alex to start BMC chamber
next week.
Working package for BMC chambers will then be defined.
e) X-ray tomograph for EML4A07 will be finished next Monday, and the
chamber will be moved back to BLDG184 for testing. Curtis, Li
and Guocai will work with this chamber.
f) Parts
I suggest UW and BMC check once more whether you have ALL parts
available for the chamber integration and test. Here are a short
list I can think about:
Mezz cards, Mezz cable, DCX box and cables, T sensors and cables,
Inplane system cables. HV cards and SHH cards, ETs, Mother board
and its adaptor(including screw and standoff)
Zhengguo Zhao