Title :
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
fDate :
6/23/1905 12:00:00 AM
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;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2001 IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7324-3
DOI :
10.1109/NSSMIC.2001.1009294
