Performance of the variable weighting function pulse processor

Author

Kuwata, M. ; Saito, N. ; Maeda, H. ; Minami, T. ; Watanabe, T. ; Husimi, K. ; Ohkawa, S.

Author_Institution

JEOL Eng. Co., Tokyo, Japan

Volume

45

Issue

3

fYear

1998

fDate

6/1/1998 12:00:00 AM

Firstpage

728

Lastpage

731

Abstract

We have developed a new time variant pulse processor which is able to adapt the weighting function according to the detector noise characteristics in order to get the best performance from a semiconductor X-ray detecting system. The circuit construction is almost the same as the previously presented trapezoidal filter that was composed of a rectangular prefilter and a gated integrator. The rectangular waveform was formed by adding a differentiated signal and an integration of the differentiated signal with the same ratio. In the new processor it is possible to vary the weighting function continuously by changing the mixing ratio of the differentiated waveform and the integrated one. Noise analysis of the filter has been carried out by using SPICE. This technique is very useful for determining the noise response of a filter simply by the circuit design

Keywords

X-ray detection; nuclear electronics; pulse circuits; semiconductor counters; SPICE; detector noise characteristics; filter circuits; gated integrator; rectangular prefilter; rectangular waveform; semiconductor X-ray detecting system; time variant pulse processor; trapezoidal filter; variable weighting function pulse processor; Circuit noise; Filters; Nitrogen; Noise shaping; SPICE; Semiconductor device noise; Switches; Temperature; X-ray detection; X-ray detectors;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.682624

Filename

682624