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User name Kalyan
Log entry time 22:47:54 on November 07, 2008
Entry number 247417
keyword=Coincidence time peak with 5 pass beam<pre>
Ok, after a bit of searching we finally found the coincidence peak with 5
pass beam! I used multi-foil carbon target data to look for the coincidence.
Initially the peak was not centered and was pretty much on the left
corner of the window(see fig 1). Then I had delay T3 to center the
peak(see fig 3). I would still like to add 10ns more to T3 but I ran out
of the range provided by the CAMAC delay module - it only gives 60ns
delay. May be we can add delay using cable in the next opportunistic access.
Fig. 1 : Run 2995 (command used T3_delay 40 140)
Fig. 2 : Run 2997 (command used T3_delay 50 140)
Fig. 3 : Run 2999 (command used T3_delay 60 140)
Note : I delayed T3 by 10ns each time.
</pre>
A copy of this log entry has been emailed to: jiang, jpchen,camsonne,brads,vasulk
Figure 1
Figure 2
Figure 3
