NDLI: Effect of crystal length on CdZnTe frisch collar device performance

Content Provider	IEEE Xplore Digital Library
Author	Kargar, A. Brooks, A.C. Harrison, M.J. Chen, H. Awadalla, S. Bindley, G. McGregor, D.S.
Copyright Year	2009
Description	Author affiliation: Kansas State University, Mechanical and Nuclear Engineering Department, S.M.A.R.T. Laboratory, Manhattan, KS 66506 USA (Kargar, A.; Brooks, A.C.; McGregor, D.S.) \|\| Redlen Technologies (Canada) (Chen, H.; Awadalla, S.; Bindley, G.) \|\| University of Florida, Department of Nuclear and Radiological Engineering (Harrison, M.J.)
Abstract	In this study, the impact of crystal length on CdZnTe Frisch collar detector spectroscopic performance is investigated. Four different Frisch collar devices were designed to have identical aspect ratios of 2.0 for simulation purposes, and all four devices were later fabricated and tested. Pulse height spectra were acquired from all Frisch collar devices with a $^{137}Cs$ gamma-ray check source and the results are presented. The Frisch collar alters the weighting potential within a planar device and improves the charge collection efficiency (CCE) distribution. Thus, the parameters affecting these distributions have a great impact on the pulse height spectrum, and among those is aspect ratio (AR). All four tested devices have similar aspect ratios, and therefore also have similar weighting potential distributions. However, due to trapping effects, the CCE profiles are not the same, and shorter devices show more uniform responses to gamma rays. CCE simulations confirm that the Frisch collar device with the longest drift length has the lowest performance.
Starting Page	2017
Ending Page	2022
File Size	1666608
Page Count	6
File Format	PDF
ISBN	9781424439614
ISSN	10957863
DOI	10.1109/NSSMIC.2009.5402138
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spectroscopy Detectors Energy resolution Testing Electrons Space charge Nuclear and plasma sciences Gamma ray effects Helium Charge carriers Aspect ratio CdZnTe Frisch collar detector
Content Type	Text
Resource Type	Article

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