This paper describes the design and results of a fast discrimination-fast counting system. The fast discriminator consists of a high speed GaAs tunnel diode
the fast counting circuit consists of some ECL super high speed D triggers. The resolving time of the system is less than 3ns
the range of discrimination threshold is 10mV—400mV.
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references
EG&G ORTEC , Instruments for research and applied sciences , 1983 , p. 80 .