A TRIGGER SYSTEM FOR THE TAGGING STATION OF THE TAGGED-NEUTRINO FACILITY

The trigger electronics of a station including six types of linked uni ts operating as independent programmable logical devices are described . The system generates signals for event selection from a scintillator and Cherenkov (threshold and differential) beam counters and may be c onnected to a second-level trigger. It also generates Busy signals fro m the various sections of the data acquisition system, which are neede d in order to synchronize them. The system provides the maximum possib le bandwidth for input signals, combines permanent cable links with lo gical versatility, includes intermediate connections for monitoring it s operation, and minimizes the signal delay time.