Hi Jamie,

the scaler board #3 contains a matrix of populations of various bit patterns
for all bunch crossings,
integrated over the whole run.
It is possible to recover from it probability how often BBC East.West and
FPD bits were set to one in the same bunch crossing, run by run.
It worked well for last two weeks of pp data taking or perhaps even earlier.
I'm not sure I know how for STAR events  recover  cases when trigger word
0x2000 has been overwritten by FPD to 0x2003,
 but based on board #3 data one can probably find out the true prescaling
for STAR minbias events with recorded trig=0x2000.
Is this kind of solution sufficient?
With regards
Jan

-----Original Message-----
From: James Dunlop [mailto:jcdunlop@star.physics.yale.edu]
Sent: Tuesday, April 30, 2002 9:36 PM
To: highpt-hn@www.star.bnl.gov
Subject: Re: Using the 0x2000 triggers in FPD*EMCproduction

Try # 2:

 Moving this onto a more general forum:

 I would like to know if anyone has figured out or thought of
 how to use the scaledowns and multiple trigger sets
 used in the pp run.  We will be facing this more and more
 as the trigger system increases the detectors that it uses.


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