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User name D. Parno
Log entry time 14:40:56 on February 23, 2009
Entry number 262905
keyword=Syncroc studies: L1A vs Clock for Run 1647Run 1647 was taken during the swing shift on 20 Feb. Fig. 1 shows the ROC synchronizations for the first 50,000 events, including several gaps. Fig. 2 shows L1A:clockcnt for the first 1,000,000 events.
In Fig. 2, we note that the large structure around clockcount=350,000 is
probably a beam trip (since L1A drops all the way to zero). We expect
L1A:clockcnt to be a flat line, and we see that it looks quite ugly for
most of these first 1,000,000 events. The first 50,000 events (the ones
that contribute to Fig. 1) represent roughly the clockcount < 40,000 part
of Fig. 2.
A copy of this log entry has been emailed to: brads, kalyan, flay, posik, moffit
Figure 1
Figure 2
