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User name tireman
Log entry time 09:53:22 on May23,2009
Entry number 275748
keyword=Trigger 1 Left-HRS prescale incorrectly set over night (5-22-09 thru 5-23-09)I noticed a slight change in the trigger deadtimes on Big Bite as a function of the trigger type from yesterday afternoon to this morning. First figure is from Run 2627 (L-HRS) this morning and the second figure is from Run 2595 (L-HRS) from yesterday about 1530 hours. Trigger type 1 shows a significant increase in dead time. After speaking with Miha and checking the prescales it turns out they were incorrectly reset after beam restoration last night (late night typo). Looking at the number of events for trigger 1 it is still zero since the number was only off by a leading '1' thus leaving it still large enough so no events of this type where recorded. No harm no foul.
The prescales have been reset as of RUN #2628 to the original values.
FIGURE 1
FIGURE 2
