Pico Systems

Silicon Discriminator

This unit contains 16 channels of computer-controlled leading edge discriminators with time-to-charge converters suitable for use with FERA and other charge-integrating ADCs. The TQCs can be configured as either common-start or common-stop. It also contains a test multiplexer that allows the user to inspect the logic signals from outside the detector cave or other remote location. These test outputs can be disabled on individual modules, such that several units can be or'd together to feed only one logic signal at a time to a scope for an entire array of detectors. The discriminators can be configured to accept either positive or negative going pulses, on a channel by channel basis. The discriminator produces individual outputs in ECL differential form on 34-pin ribbon-cable connectors, as well as an Or of all 16 channels on a Lemo NIM output. It also provides multiplicity as 50 mV/hit on a Lemo connector. The TDC outputs can be vetoed, to prevent starting TDC channels prematurely. The module occupies 1 slot1 in a standard CAMAC crate.

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