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User name xqian
Log entry time 08:13:30 on November 19, 2008
Entry number 249704
keyword=Wire Chamber hitting efficiency per wiresee plot,
We can see clearly a drop of hitting efficiency at the first half of the
wire chamber. This may be related to the fact that we have large
background at top of the wire chamber due to the hole in our acceptance.
Thus, It may be a artificial effect. However, we do observe a drop in the
hitting efficiency for chamber-2 and 3, which should due to the increase
of the threshold in chamber-2 and 3, we should increase the HV by 50V.
Figure 1
