The Monte Carlo studies indicate that a scintillation counter based trigger system is adequate to discriminate between central and peripheral events. We plan to prototype such a scintillator based system upon completion of the Monte Carlo design studies. In addition, the prototype program will include a timing system of two counters which will trigger on either the delta rays or reaction products produced by the incident beam particles as they pass through the target. This technique should be reliable for detecting incident beam particles with charge greater than 12.
We are requesting $21,500 for this R&D program. Note that
part of these funds will be directly applicable to the final
trigger system. The budget breakdown for these requested funds are
presented in Table 
.
Table: R&D Requested Budget for the Multiplicity Trigger.
We request that these funds become available in time to build and test the prototype in a BNL beam by the summer or fall of 1992. We plan to test our trigger system in the early stages of the installation of the experiment.