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User name Kalyan
Log entry time 19:28:36 on October30,2008
Entry number 245619
keyword=BigBite shower thresholdsHere is plot showing total shower thesholds for one channel (chan 15, somwhere just above center of the shower). On the Y axis is the ratio of number of events in ADC with a TDC hit, divided by the total number of events in ADC. This ratio is plotted against the ADC channel. The ADC was calibrated with cosmics and BB magnet turned on, to be 0.5MeV/channel.
So, for about 300MeV threshold on shower, we should put discriminator threshold be around -80mV.
FIGURE 1
FIGURE 2
