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Proceedings Paper

Neutron detection with plastic scintillators coupled to solid state photomultiplier detectors
Author(s): James F. Christian; Erik B. Johnson; Daniel E. Fernandez; Samuel Vogel; Rebecca Frank; Graham Stoddard; Christopher Stapels; Jorge Pereira; Remco Zegers
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Paper Abstract

The recent reduction of dark current in Silicon Solid-state photomultipliers (SiSSPMs) makes them an attractive alternative to conventional photomultiplier tubes (PMTs) for scintillation detection applications. Nuclear Physics experiments often require large detector volumes made using scintillation materials, which require sensitive photodetectors, such as a PMTs. PMTs add to the size, fragility, and high-voltage requirements as well as distance requirements for experiments using magnetic fields. This work compares RMD’s latest detector modules, denoted as the “year 2 prototype”, of plastic scintillators that discriminate gamma and high-energy particle events from neutron events using pulse shape discrimination (PSD) coupled to a SiSSPM to the following two detector modules: a similar “year 1 prototype” and a scintillator coupled to a PMT module. It characterizes the noise floor, relative signal-to-noise ratio (SNR), the timing performance, the PSD figure-of-merit (FOM) and the neutron detection efficiency of RMD’s detectors. This work also evaluates the scaling of SiSSPM detector modules to accommodate the volumes needed for many Nuclear Physics experiments. The Si SSPM detector module provides a clear advantage in Nuclear Physics experiments that require the following attributes: discrimination of neutron and gamma-ray events, operation in or near strong magnetic fields, and segmentation of the detector.

Paper Details

Date Published: 7 September 2017
PDF: 15 pages
Proc. SPIE 10393, Radiation Detectors in Medicine, Industry, and National Security XVIII, 1039307 (7 September 2017); doi: 10.1117/12.2276991
Show Author Affiliations
James F. Christian, Radiation Monitoring Devices, Inc. (United States)
Erik B. Johnson, Radiation Monitoring Devices, Inc. (United States)
Daniel E. Fernandez, Radiation Monitoring Devices, Inc. (United States)
Samuel Vogel, Radiation Monitoring Devices, Inc. (United States)
Rebecca Frank, Radiation Monitoring Devices, Inc. (United States)
Graham Stoddard, Radiation Monitoring Devices, Inc. (United States)
Christopher Stapels, MATLAB (United States)
Jorge Pereira, Michigan State Univ. (United States)
Remco Zegers, Michigan State Univ. (United States)

Published in SPIE Proceedings Vol. 10393:
Radiation Detectors in Medicine, Industry, and National Security XVIII
Gary P. Grim; Lars R. Furenlid; H. Bradford Barber, Editor(s)

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