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    User name A. Camsonne

    Log entry time 12:14:58 on October22,2004

    Entry number 134961

    keyword=Pedestal widening at small angle

    Pedestal for blocks with large background seems to have a wider pedestal which underflows the trigger since the flash ADC is on 7 bit, some values go the other way round, giving empty events on run 4024. Most likely the pedestal file was not loaded correctly which explains the big number of events going under 0. On following DVCS runs the pedestal seems to have been reset and reloaded which gives trigger spectrum on run 4030 so hopefully data is good since run 4028 but another run with the right pedestals has to be done


    FIGURE 1

    FIGURE 2