Assessment of Performance of New-Generation Silicon Photomultipliersfor Simultaneous Neutron and Gamma Ray Detection

Marc A. Wonders, David L. Chichester, Marek Flaska

Research output: Contribution to journalArticle

Abstract

Significant interest in silicon photomultipliers (SiPMs) over the last decade has spurred impressive growth in their technology, both in terms of performance and selection of SiPMs with differing characteristics. Nuclear nonproliferation and safeguards is a field of particular relevance for the development of SiPMs as they have been shown to be capable of simultaneously detecting gamma rays and neutrons when coupled with organic scintillators and utilizing pulse-shape discrimination (PSD). As such, an assessment of the state of the art in SiPM technology and study of the impact certain SiPM characteristics have on performance in different applications is required. This paper characterizes the performance of 20 different SiPMs from five manufacturers with pixel sizes ranging from 3 to 6 mm and microcell size ranging from 15 to 75 μm. Emphasis is placed on the ability to discriminate between neutrons and gamma rays when coupled to organic scintillator stilbene as a function of overvoltage, as well as the noise. Comparison with a fast photomultiplier tube (PMT) shows that current generation SiPMs perform competitively with PMTs in PSD, and it is found that SiPMs with larger microcells tend to have more effective neutron-gamma ray discrimination capability.

Original languageEnglish (US)
Article number8345192
Pages (from-to)2554-2564
Number of pages11
JournalIEEE Transactions on Nuclear Science
Volume65
Issue number9
DOIs
StatePublished - Sep 1 2018

Fingerprint

Photomultipliers
Gamma rays
rays
Neutrons
gamma rays
neutrons
Silicon
silicon
discrimination
scintillation counters
Phosphors
overvoltage
stilbene
Electron tubes
photomultiplier tubes
pulses
pixels
Pixels

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering

Cite this

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abstract = "Significant interest in silicon photomultipliers (SiPMs) over the last decade has spurred impressive growth in their technology, both in terms of performance and selection of SiPMs with differing characteristics. Nuclear nonproliferation and safeguards is a field of particular relevance for the development of SiPMs as they have been shown to be capable of simultaneously detecting gamma rays and neutrons when coupled with organic scintillators and utilizing pulse-shape discrimination (PSD). As such, an assessment of the state of the art in SiPM technology and study of the impact certain SiPM characteristics have on performance in different applications is required. This paper characterizes the performance of 20 different SiPMs from five manufacturers with pixel sizes ranging from 3 to 6 mm and microcell size ranging from 15 to 75 μm. Emphasis is placed on the ability to discriminate between neutrons and gamma rays when coupled to organic scintillator stilbene as a function of overvoltage, as well as the noise. Comparison with a fast photomultiplier tube (PMT) shows that current generation SiPMs perform competitively with PMTs in PSD, and it is found that SiPMs with larger microcells tend to have more effective neutron-gamma ray discrimination capability.",
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Assessment of Performance of New-Generation Silicon Photomultipliersfor Simultaneous Neutron and Gamma Ray Detection. / Wonders, Marc A.; Chichester, David L.; Flaska, Marek.

In: IEEE Transactions on Nuclear Science, Vol. 65, No. 9, 8345192, 01.09.2018, p. 2554-2564.

Research output: Contribution to journalArticle

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