From what I remember from Ring Run 2000 one has a very high random
coincidence rate, espacialy if one "ors" all the bars, like we are doing
now . This is why it will be altimately hard to look for neutrons.
Cheers, Vitaliy
Tancredi Botto wrote:
>I do not make sense of this. The problems seems to "come" at a certain
>time in the last two shifts and the trigger file seems ok.
>
>However we have had "noise" problems in the ecl custom patch (ask Chris di
>Andrea) with the NC bits, which seemed to be always firing. We thought we
>fixed this. It also possible that after "checking" the timing you swapped
>a cable polarity. I checked that last with VZ on thursday, there are ways
>to get confused.
>
>we should try putting the NC bits always in x mode (also for the front
>tofs). In that way also a flipped cable (most always 1) would not affect
>the trigger rate.
>
>
>
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