Title :
A trapezoidal shaper using a rectangular prefilter
Author :
Kuwata, M. ; Maeda, H. ; Husimi, K.
Author_Institution :
JEOL Eng. Co, Tokyo, Japan
fDate :
30 Oct-5 Nov 1994
Abstract :
A new time-variant pulse shaping amplifier that is composed of a rectangular prefilter and a gated integrator has been designed for low energy gamma-ray and X-ray spectrometers. A rectangular pulse is formed by adding a differentiated signal and an integration of the differentiated signal. Noise indices of trapezoidal filter are calculated as a function of the filter and restoration time constant and event interval. By using this filter, the products of the delta noise index and dead time is obtained to be lower than 5
Keywords :
X-ray spectrometers; X-ray spectroscopy; detector circuits; gamma-ray spectrometers; gamma-ray spectroscopy; instrumentation amplifiers; integrating circuits; nuclear electronics; preamplifiers; pulse shaping circuits; dead time; delta noise index; differentiated signal; event interval; gated integrator; low energy X-ray spectrometers; low energy gamma-ray spectrometers; rectangular prefilter; restoration time constant; time-variant pulse shaping amplifier; trapezoidal shaper; Circuits; Detectors; Filters; Leak detection; Noise shaping; Pulse amplifiers; Pulse shaping methods; Semiconductor device noise; Signal restoration; Spectroscopy;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1994., 1994 IEEE Conference Record
Conference_Location :
Norfolk, VA
Print_ISBN :
0-7803-2544-3
DOI :
10.1109/NSSMIC.1994.474501
