Michigan B184 Update May 20, 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 finished this week

1.  Summary table
 
        N(total)   N(finished)    N(this week)
UM        80           80            0
UW        80           80            0                      
BMC       80           60            6
-------------------------------------------------------------------
Total    240          220            6
                                                                            
2. Chamber finished this week:

  BMC:  
    EIL1C07, EIL1A09, EIL2A07, EIL2C07, EIS1A14, eis1c02

3. Chambers in progress

  BMC chamber
    EIL1C03: taking cr data 
    EIS1C12: taking cr data
    EIS1C06: measure gas leak rate, T sensors and inplane system
             tested
    EIL2C11: measure gas leak rate, T sensors and inplane system
             tested
    EIS1A10: measure leak rate, test T sensors and inplane system
    EIL2C09:  gas flushing, test T sensors, inplane system
 
  UW:
    4(rather than 8, as reported before) BIM chambers that will be
    attached to EIL4 Gas leak certification of the chambers.
 
4. Problems and other issues

  a) A dead channel was found due to Mezz card problem. after
  replacing Mezz card, "dead" channel is saved. in total, we have had
  2-3 such a kind of mezz card, a very small fraction of the total
  cards used for US chambers.

  c) Russican group also worked out two chambers. Their chamber
  quality seem pretty good so far. Their chamber intergration and test
  is now following the same standard as US's. US group is a great help
  to them, I think.
  
Zhengguo and David

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