User name M. Rvachev
Log entry time 05:14:13 on June25,2001
Entry number 64502
This entry is a followup to: 64430
Followups:
keyword="spec_R_s2_TDC_R_1" continuedFollowing Xiaofeng's observation of double peaking in right spectrometer
S2 paddle#1 right phototube TDC ("RS21R TDC") I looked at run #20771 with
dataspy.
T1 events having RS21R TDC around channel 2200 seem not to have hits in S1
plane. This looks strange to me since by definition of T1 trigger there should be
hits in S1 plane.
On the other hand T1 events having RS21R TDC around channel 1700 seem to be
normal. I have no explanation (except that T1 trigger might be sometimes firing on
junk).
In the figures below there are dataspy screenshots of both types of events.
FIGURE 1
FIGURE 2
