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User name Kalyan
Log entry time 09:18:32 on November13,2008
Entry number 248533
keyword=BB Shower display for backgroundBigBite shower and preshower display for the events without any tracks in the chamber and passing a minimum ADC threshold cut. Column 1-7 are the shower and 8 and 9 are preshower. Display shows particle coming out of the page and right side is close to the beam pipe.
So..for events without any tracking(not coming from the target) we always(99%) have correlated hits in the preshower and shower. That means the background events always pass through both detectors. I don't know if this of any help for background check.
Some sample display below.
FIGURE 1
FIGURE 2
