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Published February 1985 | Published
Journal Article Open

A Thick Anger Camera for Gamma-Ray Astronomy

Abstract

The NaI(Tl) Anger camera is a natural candidate for a position sensitive detector in imaging of astrophysical γ-ray sources. Here we present laboratory measurements of the response of a relatively thick (5.1 cm) NaI(Tl) Anger camera designed for coded aperture imaging in the 50 keV to 2 MeV energy range. We obtained a position resolution of 10.5 mm FWHM at 122 keV and 6.3 mm FWHM at 662 keV. The energy resolution was 7% FWHM at 662 keV. We discuss the ability of the detector to resolve the depth of the γ-ray interaction and the use of this depth resolution to reduce back-incident and internal background.

Additional Information

© 1985 IEEE. This work was supported in part by NASA grant NGR05-002-160, and the Presidential Young Investigator Program, NSF grant AST-8351736. We thank Prof. E. Stone, W. E. Althouse, A. Cummings, and the other members of the GRIP (Gamma-Ray Imaging Payload) team for their numerous contributions to this work.

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August 19, 2023
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