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Title: Ambient temperature cadmium zinc telluride radiation detector and amplifier circuit

Abstract

A low noise, low power consumption, compact, ambient temperature signal amplifier for a Cadmium Zinc Telluride (CZT) radiation detector. The amplifier can be used within a larger system (e.g., including a multi-channel analyzer) to allow isotopic analysis of radionuclides in the field. In one embodiment, the circuit stages of the low power, low noise amplifier are constructed using integrated circuit (IC) amplifiers , rather than discrete components, and include a very low noise, high gain, high bandwidth dual part preamplification stage, an amplification stage, and an filter stage. The low noise, low power consumption, compact, ambient temperature amplifier enables the CZT detector to achieve both the efficiency required to determine the presence of radio nuclides and the resolution necessary to perform isotopic analysis to perform nuclear material identification. The present low noise, low power, compact, ambient temperature amplifier enables a CZT detector to achieve resolution of less than 3% full width at half maximum at 122 keV for a Cobalt-57 isotope source. By using IC circuits and using only a single 12 volt supply and ground, the novel amplifier provides significant power savings and is well suited for prolonged portable in-field use and does not require heavy, bulky power supplymore » components.« less

Inventors:
 [1];  [2]
  1. Livermore, CA
  2. Hayward, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
871579
Patent Number(s):
5757227
Application Number:
08/689447
Assignee:
Regents of University of California (Oakland, CA)
Patent Classifications (CPCs):
H - ELECTRICITY H03 - BASIC ELECTRONIC CIRCUITRY H03F - AMPLIFIERS
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
ambient; temperature; cadmium; zinc; telluride; radiation; detector; amplifier; circuit; noise; power; consumption; compact; signal; czt; larger; including; multi-channel; analyzer; allow; isotopic; analysis; radionuclides; field; embodiment; stages; constructed; integrated; amplifiers; discrete; components; bandwidth; dual; preamplification; stage; amplification; filter; enables; achieve; efficiency; required; determine; presence; radio; nuclides; resolution; perform; nuclear; material; identification; width; half; maximum; 122; kev; cobalt-57; isotope; source; circuits; single; 12; volt; supply; ground; novel; provides; significant; savings; suited; prolonged; portable; in-field; require; heavy; bulky; power consumption; power supply; ambient temperature; integrated circuit; radiation detector; cadmium zinc; nuclear material; amplifier circuit; signal amplifier; filter stage; zinc telluride; temperature signal; isotopic analysis; channel analyzer; noise amplifier; amplification stage; amplifier provides; /327/

Citation Formats

McQuaid, James H, and Lavietes, Anthony D. Ambient temperature cadmium zinc telluride radiation detector and amplifier circuit. United States: N. p., 1998. Web.
McQuaid, James H, & Lavietes, Anthony D. Ambient temperature cadmium zinc telluride radiation detector and amplifier circuit. United States.
McQuaid, James H, and Lavietes, Anthony D. Fri . "Ambient temperature cadmium zinc telluride radiation detector and amplifier circuit". United States. https://www.osti.gov/servlets/purl/871579.
@article{osti_871579,
title = {Ambient temperature cadmium zinc telluride radiation detector and amplifier circuit},
author = {McQuaid, James H and Lavietes, Anthony D},
abstractNote = {A low noise, low power consumption, compact, ambient temperature signal amplifier for a Cadmium Zinc Telluride (CZT) radiation detector. The amplifier can be used within a larger system (e.g., including a multi-channel analyzer) to allow isotopic analysis of radionuclides in the field. In one embodiment, the circuit stages of the low power, low noise amplifier are constructed using integrated circuit (IC) amplifiers , rather than discrete components, and include a very low noise, high gain, high bandwidth dual part preamplification stage, an amplification stage, and an filter stage. The low noise, low power consumption, compact, ambient temperature amplifier enables the CZT detector to achieve both the efficiency required to determine the presence of radio nuclides and the resolution necessary to perform isotopic analysis to perform nuclear material identification. The present low noise, low power, compact, ambient temperature amplifier enables a CZT detector to achieve resolution of less than 3% full width at half maximum at 122 keV for a Cobalt-57 isotope source. By using IC circuits and using only a single 12 volt supply and ground, the novel amplifier provides significant power savings and is well suited for prolonged portable in-field use and does not require heavy, bulky power supply components.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {5}
}

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Works referenced in this record:

Development of a portable ambient temperature radiometric assaying instrument
journal, August 1995


Preliminary uranium enrichment analysis results using cadmium zinc telluride detectors
journal, October 1996

  • Lavietes, Anthony D.; McQuaid, James H.; Paulus, T. J.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 380, Issue 1-2
  • https://doi.org/10.1016/S0168-9002(96)00314-2