Assessment of Modern Silicon Photomultiplier Radiation Hardness in a Nuclear Security Context

Marc A. Wonders, Amanda M. Johnsen, Candace C. Davison, Soren Cheng, David L. Chichester, Marek Flaska

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The impact of radiation damage on silicon photomultiplier (SiPM) performance is essential in evaluating their suitability for use in long-term applications and/or high-radiation environments. In this work multiple SiPMs are tested from Hamamatsu, Ketek, and SensL. SiPMs are exposed separately to both gamma ray and fast neutron fields up to 1000 kRad and 1011 neutrons/cm2 respectively. Characteristics of interest are pulse shape discrimination (PSD) with organic scintillators, energy resolution, noise, and signal amplitude. It is found that PSD is more dramatically impacted by radiation damage than energy resolution, and significant increases in noise levels are observed at the irradiation levels employed. Attenuation of the signal amplitude is only significant for some SiPMs, notably those that produce the largest charge integrals. As expected, performance in larger SiPMs deteriorates faster because noise levels increase more drastically compared to smaller SiPMs. Neutron activation is also shown to not be the primary factor in performance degradation.

Original languageEnglish (US)
Title of host publication2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538684948
DOIs
Publication statusPublished - Nov 2018
Event2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Sydney, Australia
Duration: Nov 10 2018Nov 17 2018

Publication series

Name2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings

Conference

Conference2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018
CountryAustralia
CitySydney
Period11/10/1811/17/18

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All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging
  • Nuclear and High Energy Physics

Cite this

Wonders, M. A., Johnsen, A. M., Davison, C. C., Cheng, S., Chichester, D. L., & Flaska, M. (2018). Assessment of Modern Silicon Photomultiplier Radiation Hardness in a Nuclear Security Context. In 2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings [8824704] (2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSSMIC.2018.8824704