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Proceedings Paper

Avalanche photodiodes for anticoincidence detectors
Author(s): Leonard J. Cirignano; Richard Farrell; Robert H. Redus; Michael R. Squillante; Stanley D. Hunter; Rajani Cuddapah; Reshmi Mukherjee
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Paper Abstract

Anticoincidence detectors are required for a variety of satellite instruments, including high energy gamma-ray telescopes, in order to differentiate ambient background radiation from signals of interest. Presently, most anticoincidence systems use scintillators coupled to photomultiplier tubes. We have demonstrated that it is now possible to use very high gain solid state avalanche photodiodes (APDs) as photodetectors for this application. A single APD coupled to a 30 cm multiplied by 30 cm multiplied by 0.95 cm plastic scintillator tile demonstrated 100% detection efficiency for minimum ionizing particles, with a low false positive rate. Multiple APDs enhance the signal to noise ratio in addition to providing redundancy. Relative to PMTs, APDs are compact, low power, and mechanically robust devices. Ground test data of APDs for anticoincidence shields is presented.

Paper Details

Date Published: 18 October 1996
PDF: 8 pages
Proc. SPIE 2806, Gamma-Ray and Cosmic-Ray Detectors, Techniques, and Missions, (18 October 1996); doi: 10.1117/12.254007
Show Author Affiliations
Leonard J. Cirignano, Radiation Monitoring Devices, Inc. (United States)
Richard Farrell, Radiation Monitoring Devices, Inc. (United States)
Robert H. Redus, Radiation Monitoring Devices, Inc. (United States)
Michael R. Squillante, Radiation Monitoring Devices, Inc. (United States)
Stanley D. Hunter, NASA Goddard Space Flight Ctr. (United States)
Rajani Cuddapah, NASA Goddard Space Flight Ctr. (United States)
Reshmi Mukherjee, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 2806:
Gamma-Ray and Cosmic-Ray Detectors, Techniques, and Missions
Brian D. Ramsey; Thomas A. Parnell, Editor(s)

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