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User name R. Michaels
Log entry time 04:01:22 on April14,2012
Entry number 374215
Followups:
- 374234 04/14/12 04:53 mhuang Re: possible scaler map problem
- 374254 04/14/12 05:39 Chao Scaler channels to read BCM have been changed to 19/20
We noticed (fig 1) that bcm_u1 and bcm_d1 count zero rate
on the R-HRS. See the 17th and 18th channel. There are no
other channels with the string "bcm" in them.
This could be because the scaler.map file is wrong, or the BCMs
are unplugged, or ... lots of possibilities.
In fact, it makes me wonder if we are checking scalers at all (?)
and if we know we are measuring charge (we assume this matters).
Min, our SL, tried analyzing offline and got a similar result: don't
know the charge on R-HRS.
One reason to check data offline is that even if the halog end-run
scaler info is screwed up, one can in principle recover by analyzing
the data offline.
Ideally, the experiment checks BCM signals at the start of the
experiment through a standard procedure. Hopefully it was done
and we're just mixed up here ...
FIGURE 1
