Hi there,
We have started taking efficiency data:
run#2329, 2331 using the four paddles in the trigger.
>From this data we saw that first and third paddles are noisy (the first
one is really bad on scope); The efficiency is 70% right now.
I also take a run (#2333) for just the last two paddles in the trigger and
another one using the second and the last paddle in the trigger
(run#2334).
The efficiency is constant: 70% for TOF's.
Cherenkov counters don't give any good signal to be used in getting a more
precise efficiency measurement for TOF's.
Chris is going to play around with the small paddles and get enough data
to get a better idea of what is going on!
Aaron & Tavi
-----------------------
Octavian F Filoti
Nuclear Physics Group
Univ. of New Hampshire
9 Library Way
Durham, NH 03824
phone: (603)862-1691
FAX: (603)862-2998
email: ofiloti@unh.edu
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