NDLI: Spectrometric response of large volume CdZnTe coplanar detectors

Content Provider	IEEE Xplore Digital Library
Author	Gonzalez, R. Perez, J.M. Vela, O. de Burgos, E. Oller, J.C. Gostilo, V.
Copyright Year	1963
Abstract	In this paper, the spectroscopic performance of a new large volume coplanar detector is studied. Spectrometric results using classical techniques are presented. The new unit confirmed that this design of coplanar-grid anodes provided an acceptable balance between anode weighting potentials. The material of this detector is not as homogeneous as desirable. Nonetheless, the detector demonstrated a resolution of the order of 2.7% FWHM for 662 keV. The spectroscopic properties at different interaction depths were studied by making use of a multiparametric digital system. Depth sensing achievable resolution is quantified by making use of this setup. The interaction profile at different depths of the detector was compared with that expected in ideal detectors. An adaptation of the multiparametric digital system was applied to the study of the waveforms generated in the preamplifiers connected to the electrodes. Induced charge waveforms at selected interaction depths were analyzed in order to study the deviations in the interaction depth profiles found between simulation and theory. The causes are attributed to trapping effects in the detector bulk. Unexpected pulses are explained by modeling the charge drift in the detector. The mobility of electrons in these detectors was studied by digital signal analysis, which gave a value close to 950 cm/sup 2/ V/sup -1/ s/sup -1/ at room temperature. Results of the dependence of /spl mu//sub e/ with T are presented in the operation temperature range of these detectors.
Sponsorship	IEEE Nuclear and Plasma Sciences Society Computer Applications in Nuclear and Plasma Sciences (CANPS) Lawrence Berkeley Lab. Lawrence Livermore Nat. Lab. APS College of William and Mary Continuous Electron Beam Accelerator Facility NASA Defence Nuclear Agency Sandia National Laboratories Jet Propulsion Laboratory Brookhaven Nat. Lab. Lawrence Livermore Nat. Lab IEEE/NPPS Radiat. Effects Committee Defence Nuclear Agency/DoD Sandia National Laboratories/DOE Jet Propulsion Laboratory/NASA Phillips Lab./DoD
Starting Page	2076
Ending Page	2084
Page Count	9
File Size	475176
File Format	PDF
ISSN	00189499
Volume Number	52
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spectroscopy Detectors Anodes Digital systems Preamplifiers Electrodes Analytical models Electron traps Electron mobility Signal analysis spectrometer CdZnTe CZT coplanar
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Electrical and Electronic Engineering Nuclear Energy and Engineering

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Analysis of detector response using 3-D position-sensitive CZT gamma-ray spectrometers

3-D position sensitive CdZnTe spectrometer performance using third generation VAS/TAT readout electronics

Factors limiting the performance of CdZnTe detectors

Stability and characteristics of large CZT coplanar electrode detectors

Factors affecting energy resolution of coplanar-grid CdZnTe detectors

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Spatial variation of energy resolution in 3-D position sensitive CZT gamma-ray spectrometers

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