Development of CZT detectors for x-ray and gamma-ray astronomy

Kuen Lee; J. W. Martin; A. Garson III; Q. Guo; J. Matteson; M. Groza; M. Beilicke; A. Burger; G. de Geronimo; H. Krawczynski

doi:10.1117/12.893595

27 September 2011 Development of CZT detectors for x-ray and gamma-ray astronomy

Kuen Lee, J. W. Martin, A. Garson III, Q. Guo, J. Matteson, M. Groza, M. Beilicke, A. Burger, G. de Geronimo, H. Krawczynski

Author Affiliations +

Proceedings Volume 8142, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII; 81420D (2011) https://doi.org/10.1117/12.893595
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

Cadmium Zinc Telluride (CZT) is the detector material of choice for the detection of X-rays in the 10 keV-1MeV energy band with excellent spatial and energy resolutions and without cryogenic cooling. In this contribution, we report on recent results of the CZT detector development program and several astrophysical experiments which make use of CZT detectors. In the first part of the paper, we discuss the performance of pixel and cross-strip CZT detectors read out with an ASIC developed at the Brookhaven National Laboratory. Our pixel detectors achieve some of the best energy resolutions reported in the literature. Cross-strip detectors are found to give an inferior performance and we investigate the reason for this performance difference. We also present results from a precision measurement of the effect of a steering grid on multi-pixel events obtained with a 200 micrometer collimator. In the second part of the paper, we describe the design and performance of the hard X-ray polarimeter X-Calibur. The polarimeter uses a 14 cm long scintillator scatterer, surrounded by an assembly of 32 2-5 mm thick CZT detectors. We discuss the sensitivity of the polarimeter to measure the linear polarization of 10 keV-80 keV X-rays on short and long balloon flights and results from testing the polarimeter in the laboratory.

Citation Download Citation

Kuen Lee, J. W. Martin, A. Garson III, Q. Guo, J. Matteson, M. Groza, M. Beilicke, A. Burger, G. de Geronimo, and H. Krawczynski "Development of CZT detectors for x-ray and gamma-ray astronomy", Proc. SPIE 8142, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII, 81420D (27 September 2011); https://doi.org/10.1117/12.893595

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available