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Proceedings Paper

SSPM scintillator readout for gamma radiation detection
Author(s): Stuart A. Baker; Christopher Stapels; J. Andrew Green; Ronald E. Guise; Jason A. Young; Larry Franks; Britany Stokes; Elizabeth Wendelberger
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Paper Abstract

Silicon-based photodetectors offer several benefits relative to photomultiplier tube-based scintillator systems. Solid-state photomultipliers (SSPM) can realize the gain of a photomultiplier tube (PMT) with the quantum efficiency of silicon. The advantages of the solid-state approach must be balanced with adverse trade-offs, for example from increased dark current, to optimize radiation detection sensitivity. We are designing a custom SSPM that will be optimized for green emission of thallium-doped cesium iodide (CsI(Tl)). A typical field gamma radiation detector incorporates thallium doped sodium iodide (NaI(Tl)) and a radiation converter with a PMT. A PMT's sensitivity peaks in the blue wavelengths and is well matched to NaI(Tl). This paper presents results of photomultiplier sensitivity relative to conventional SSPMs and discusses model design improvements. Prototype fabrications are in progress.

Paper Details

Date Published: 14 September 2011
PDF: 8 pages
Proc. SPIE 8144, Penetrating Radiation Systems and Applications XII, 81440O (14 September 2011); doi: 10.1117/12.895195
Show Author Affiliations
Stuart A. Baker, National Security Technologies, LLC (United States)
Christopher Stapels, Radiation Monitoring Devices, Inc. (United States)
J. Andrew Green, National Security Technologies, LLC (United States)
Ronald E. Guise, National Security Technologies, LLC (United States)
Jason A. Young, National Security Technologies, LLC (United States)
Larry Franks, Consultant (United States)
Britany Stokes, National Security Technologies, LLC (United States)
Elizabeth Wendelberger, National Security Technologies, LLC (United States)


Published in SPIE Proceedings Vol. 8144:
Penetrating Radiation Systems and Applications XII
Gary P Grim; Richard C. Schirato, Editor(s)

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