User name R. Michaels
Log entry time 12:35:09 on January 8,2005
Entry number 138531
keyword=online deadtime calc.
Online deadtime calculation was revived. This affects two codes.
The "datamon" GUI should display the deadtime now (type "datamon"
on adaql2 on a-onl account). The 2nd code is halla_scaler_process.tcl
which calculates the deadtime for the halog end-run entries.
In both places I needed to make assumptions about correlations
between triggers (of course, offline the calculation is straight-
forward, see the class THaNormAna in the C++ analyzer). The
assumption is that all T5 are also T1 and T3, but no other correl-
ations between triggers. Also, I put in the assumptions about
prescale factors, which is *NEW* to SRC experiment: If ps > max
then ps = ps%max, except for T6, T7 for which if ps >= max then
those triggers are disabled. (max = 24 bits for T1-4 and 16 bits
for T5-8). Make sure you understand this new rule.
Note, the deadtime at present is ~50%.