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Proceedings Paper

Scintillator gamma-ray detectors with silicon photomultiplier readouts for high-energy astronomy
Author(s): Peter F. Bloser; Jason Legere; Christopher Bancroft; Mark L. McConnell; James M. Ryan; Nathan Schwadron
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Paper Abstract

Space-based gamma-ray detectors for high-energy astronomy face strict constraints of mass, volume, and power, and must endure harsh operating environments. Scintillator materials have a long history of successful operation under these conditions, and new materials offer greatly improved performance in terms of efficiency, time response, and energy resolution. The use of scintillators in space remains constrained, however, by the mass, volume, and fragility of the associated light readout device, typically a vacuum photomultiplier tube (PMT). Recently developed silicon photomultipliers (SiPMs) offer gains and efficiencies similar to those of PMTs, but with greatly reduced mass and volume, high ruggedness, and no high-voltage requirements. We have therefore been investigating the use of SiPM readouts for scintillator gamma-ray detectors, with an emphasis on their suitability for space- and balloonbased instruments for high-energy astronomy. We present our most recent results, including spectroscopy measurements for lanthanum bromide scintillators with SiPM readouts, and pulse-shape discrimination using organic scintillators with SiPM readouts. We also describe potential applications of SiPM readouts to specific highenergy astronomy instrument concepts.

Paper Details

Date Published: 26 September 2013
PDF: 8 pages
Proc. SPIE 8859, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVIII, 88590A (26 September 2013); doi: 10.1117/12.2024411
Show Author Affiliations
Peter F. Bloser, The Univ. of New Hampshire (United States)
Jason Legere, The Univ. of New Hampshire (United States)
Christopher Bancroft, The Univ. of New Hampshire (United States)
Mark L. McConnell, The Univ. of New Hampshire (United States)
James M. Ryan, The Univ. of New Hampshire (United States)
Nathan Schwadron, The Univ. of New Hampshire (United States)

Published in SPIE Proceedings Vol. 8859:
UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVIII
Oswald H. Siegmund, Editor(s)

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