Clustering algorithm with adaptive shaping method for CdZnTe detectors

Author

Nakamura, A. ; Takahashi, H. ; Zhang, L. ; Fukuda, D. ; Nakazawa, M. ; Misawa, M. ; Murayama, H.

Author_Institution

Res. into Artifacts, Univ. of Tokyo, Japan

Volume

4

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

2353

Lastpage

2356

Abstract

CdZnTe (CZT) detectors are promising detectors which have many good characteristics such as room temperature operation, reasonable energy resolution, high detection efficiency to gamma rays, etc. However, the energy resolution of CZT is governed by poor mobilities of the charge carriers. Many researchers have tried to solve this problem. Among them, a clustering method has been recently proposed which is based on digital signal processing of preamplifier output waveforms. In this method, we can classify signals according to their shapes and independently treat different shapes. In this paper, we report a new clustering algorithm with adaptive shaping time. The obtained energy resolution for ¹³⁷Cs was improved to 5.4 keV FWHM by applying this method

Keywords

gamma-ray detection; semiconductor counters; ¹³⁷Cs; CdZnTe; CdZnTe detectors; adaptive shaping method; adaptive shaping time; clustering method; detection efficiency; energy resolution; room temperature; Charge carriers; Clustering algorithms; Clustering methods; Energy resolution; Gamma ray detection; Gamma ray detectors; Gamma rays; Shape; Signal processing algorithms; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2001 IEEE

Conference_Location

San Diego, CA

ISSN

1082-3654

Print_ISBN

0-7803-7324-3

Type

conf

DOI

10.1109/NSSMIC.2001.1009294

Filename

1009294