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User name X. Zheng
Log entry time 21:28:13 on November 26, 2009
Entry number 302899
This entry is a followup to: 302843
keyword=Pileups will be added later to this entry
The "deadtime" calculation in the previous entry included only tagger
loss, while true deadtime should be the sum of the tagger loss and
pileup. Pileups will be extracted from HRS data later. It is also
expected that wide path has more pileups, i.e., after adding pileups we
should see a difference between narrow and wide paths.
Pileups were not included in previous deadtime studies because pileups
were at 10^-3 level, while tagger loss was % level. So for the quick
analysis done before today, pileups were not considered, although we do
have enough data to take into account pileups in offline analysis.