Author_Institution :
Tennelec, Oak Ridge, TN, USA
Abstract :
The current usage of linear pulse-shaping filters is reviewed. It is shown that pulse amplifiers with different shaping networks are best compared for spectral resolution and count-rate capability at a shaped-pulse width measured at a specific fraction of peak height, preferably 50% (t1/2). With this normalization, it is shown that the best tradeoff between noise and resolving time is obtained with the quasi-triangular waveform, the worst with the cusp. Noise, resolving time, and ballistic deficit are compared through graphs and tables for the cusp, true Gaussian, true triangle, CR-(RC)n, sinen, and quasi-triangular shapes for normalizations at tp, t1/2, and t0.01. Rules are given for estimating the effect of pulse shape on noise performance
Keywords :
nuclear electronics; ballistic deficit; count-rate capability; cusp; linear pulse-shaping filters; noise; normalization; quasitriangular waveform; resolving time; shaped-pulse width; shaping networks; sine shape; spectral resolution; true triangle shape; unipolar pulse-shaping networks; 1f noise; Capacitance; Filters; Noise shaping; Pulse amplifiers; Pulse measurements; Pulse shaping methods; Shape; Signal to noise ratio; Space vector pulse width modulation;
