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This note is a summary of some studies of the effect(s) of less than
optimal discriminator performance on the triggering abilities of the
MVD. I did this study using 340 events which were generated as part
of the PHENIX "10K" simulation run. Actually, the events I used were
files used to test whether various detectors were working prior to
starting the 10K run. Since the MVD was working and was not subsequently
changed in the code, these events should be the same as the 10K run.
The events are central Au+Au events from the Hijing event generator.
Because I wanted to test the effects of the discriminator performance
on the trigger at all multiplicities, I used a random number generator
to throw out (randomly selected) hits from some events. Two calculations
were done. One calculation kept between 12% and 100% of the hits.
The other calculation was intended to simulate low multiplicity
events. That calculation kept between 0.1% and 10% of the tracks.
This allowed me to generate a reasonable range of multiplicities.
John Sullivan
sullivan@lanl.gov
updated Thursday December 18, 1997