A single width dual channel NIM based
integrated electronics module
is fabricated
to process neutron detector signals. The dynode and anode output from PMT are fed
into the integrated electronics module which consists of pre-amplifier, shaper
amplifier, CFD, PSD and TAC circuits built in it. This module adopts zero-cross
technique for neutron-γ pulse shape discrimination. The shaper amplifier in
this module, which has adjustable gain, gives a bipolar output of 1μs shaping
time at the front panel. The incorporated CFD has front panel zero-cross and
threshold adjustments. The module gives two fixed width CFD outputs; a prompt
output to be used to generate the master strobe for data collection logic and a
delayed output to generate time of flight spectrum. Zero-cross discriminator
output is given at the rear panel as a fast NIM signal. It also provides a TAC
signal corresponding to zero-crossing time distribution.
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