Thick CZT detectors for space-borne X-ray astronomy

H. Krawczynski; I. Jung; J. Perkins; A. Burger; M. Groza

doi:10.1117/12.558912

Thick CZT detectors for space-borne X-ray astronomy

H. Krawczynski
, I. Jung
, J. Perkins
, A. Burger
, M. Groza

Research output: Contribution to journal › Conference article › peer-review

22 Scopus citations

Abstract

Cadmium Zinc Telluride (CZT) detectors are having a major impact on the field of hard X-ray astronomy. Without the need for cryogenic cooling they achieve good spatial and energy resolutions over the broad energy range from 10 keV to ∼600 keV. In this paper, we briefly review the historical development of detectors used in X-ray astronomy. Subsequently, we present an evaluation of CZT detectors from the company Imarad. The standard 2×2×0.5 cm detectors, contacted with 8×8 In pixels and an In cathode, exhibit FWHM energy resolutions of 7 keV at 59 keV, and 10 keV at 662 keV. A direct measurement of the 662 keV photopeak efficiency gives 67%. We have started a detailed study of the performance of Imarad detectors depending on surface preparation, contact materials, contact deposition, post-deposition detector annealing, and detector passivation techniques. We present first results from contacting detectors with Cr, Ag, Au, and Pt.

Original language	English
Article number	01
Pages (from-to)	1-13
Number of pages	13
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5540
DOIs	https://doi.org/10.1117/12.558912
State	Published - 2004
Event	Hard X-Ray and Gamma-Ray Detector Physics VI - Denver, CO, United States Duration: Aug 2 2004 → Aug 3 2004

Keywords

C ZT
Contact technology
Space-applications
X-ray and Gamma-ray detectors

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10.1117/12.558912

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title = "Thick CZT detectors for space-borne X-ray astronomy",

abstract = "Cadmium Zinc Telluride (CZT) detectors are having a major impact on the field of hard X-ray astronomy. Without the need for cryogenic cooling they achieve good spatial and energy resolutions over the broad energy range from 10 keV to ∼600 keV. In this paper, we briefly review the historical development of detectors used in X-ray astronomy. Subsequently, we present an evaluation of CZT detectors from the company Imarad. The standard 2×2×0.5 cm detectors, contacted with 8×8 In pixels and an In cathode, exhibit FWHM energy resolutions of 7 keV at 59 keV, and 10 keV at 662 keV. A direct measurement of the 662 keV photopeak efficiency gives 67\%. We have started a detailed study of the performance of Imarad detectors depending on surface preparation, contact materials, contact deposition, post-deposition detector annealing, and detector passivation techniques. We present first results from contacting detectors with Cr, Ag, Au, and Pt.",

keywords = "C ZT, Contact technology, Space-applications, X-ray and Gamma-ray detectors",

author = "H. Krawczynski and I. Jung and J. Perkins and A. Burger and M. Groza",

year = "2004",

doi = "10.1117/12.558912",

language = "English",

volume = "5540",

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note = "Hard X-Ray and Gamma-Ray Detector Physics VI ; Conference date: 02-08-2004 Through 03-08-2004",

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TY - JOUR

T1 - Thick CZT detectors for space-borne X-ray astronomy

AU - Krawczynski, H.

AU - Jung, I.

AU - Perkins, J.

AU - Burger, A.

AU - Groza, M.

PY - 2004

Y1 - 2004

N2 - Cadmium Zinc Telluride (CZT) detectors are having a major impact on the field of hard X-ray astronomy. Without the need for cryogenic cooling they achieve good spatial and energy resolutions over the broad energy range from 10 keV to ∼600 keV. In this paper, we briefly review the historical development of detectors used in X-ray astronomy. Subsequently, we present an evaluation of CZT detectors from the company Imarad. The standard 2×2×0.5 cm detectors, contacted with 8×8 In pixels and an In cathode, exhibit FWHM energy resolutions of 7 keV at 59 keV, and 10 keV at 662 keV. A direct measurement of the 662 keV photopeak efficiency gives 67%. We have started a detailed study of the performance of Imarad detectors depending on surface preparation, contact materials, contact deposition, post-deposition detector annealing, and detector passivation techniques. We present first results from contacting detectors with Cr, Ag, Au, and Pt.

AB - Cadmium Zinc Telluride (CZT) detectors are having a major impact on the field of hard X-ray astronomy. Without the need for cryogenic cooling they achieve good spatial and energy resolutions over the broad energy range from 10 keV to ∼600 keV. In this paper, we briefly review the historical development of detectors used in X-ray astronomy. Subsequently, we present an evaluation of CZT detectors from the company Imarad. The standard 2×2×0.5 cm detectors, contacted with 8×8 In pixels and an In cathode, exhibit FWHM energy resolutions of 7 keV at 59 keV, and 10 keV at 662 keV. A direct measurement of the 662 keV photopeak efficiency gives 67%. We have started a detailed study of the performance of Imarad detectors depending on surface preparation, contact materials, contact deposition, post-deposition detector annealing, and detector passivation techniques. We present first results from contacting detectors with Cr, Ag, Au, and Pt.

KW - C ZT

KW - Contact technology

KW - Space-applications

KW - X-ray and Gamma-ray detectors

UR - https://www.scopus.com/pages/publications/15844411885

U2 - 10.1117/12.558912

DO - 10.1117/12.558912

M3 - Conference article

AN - SCOPUS:15844411885

SN - 0277-786X

VL - 5540

SP - 1

EP - 13

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

M1 - 01

T2 - Hard X-Ray and Gamma-Ray Detector Physics VI

Y2 - 2 August 2004 through 3 August 2004

ER -

Thick CZT detectors for space-borne X-ray astronomy

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Keywords

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