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    User name Kalyan

    Log entry time 12:29:31 on February 26, 2009

    Entry number 263487

    This entry is a followup to: 263455

    keyword=shower channels 19.4 , 22.7 checked - looks okay

    I checked the channels 19.4 and 22.5 on the shower, they both looked okay on the scope and with cosmics ( not any different from good channels). But with beam the ADC doesn't look good..almost no events in high ADC channels.

    Below are the ADCs (with cosmics) for 19.4 and 22.5 channels and for comparison fig.3 shows a good channel 13.4.

    Figure 1

    Figure 2

    Figure 3