Pulse pileup rejection methods using a two-component Gaussian Mixture Model for fast neutron detection with pulse shape discriminating scintillator

Glenn, Andrew; Cheng, Qi; Kaplan, Alan D.; Wurtz, Ron

doi:10.1016/j.nima.2020.164905

Title: Pulse pileup rejection methods using a two-component Gaussian Mixture Model for fast neutron detection with pulse shape discriminating scintillator

Journal Article · Thu Dec 03 00:00:00 EST 2020 · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

DOI:https://doi.org/10.1016/j.nima.2020.164905· OSTI ID:1773257

Glenn, Andrew ^[1]; Cheng, Qi ^[1]; Kaplan, Alan D. ^[1];

^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Pulse shape discriminating scintillator materials in many cases allow the user to identify two basic kinds of pulses arising from two kinds of particles: neutrons and gammas, respectively. An uncomplicated solution for building a classifier consists of a two-component mixture model learned from mixtures of pulses from neutrons and gammas at a range of energies. Depending on the conditions of data gathered to be classified, multiple classes of events besides neutrons and gammas may occur, most notably pileup events. All these kinds of events that are neither neutron nor gamma are anomalous and, in cases where the class of the particle is in doubt, it is preferable to remove them from the analysis. This study compares the performance of two analytical methods for using the scores from the two-component model to identify anomalous events and in particular to remove pileup events. This study further benchmarks the analytical methods against supervised machine learning methods. Additionally, this study presents a means of assessing performance of pileup removal using ROC curves and precision–recall curves. A specific outcome of this study is to propose a novel anomaly score, denoted by G, from an unsupervised two-component model that is conveniently distributed on the interval [–1,1].

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1773257

Alternate ID(s):: OSTI ID: 1811002

Report Number(s):: LLNL-JRNL-812701; 1020142; TRN: US2207035

Journal Information:: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 988; ISSN 0168-9002

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

References (19)

Pulse pile-up identification and reconstruction for liquid scintillator based neutron detectors Luo, X. L.; Modamio, V.; Nyberg, J. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 897 https://doi.org/10.1016/j.nima.2018.03.078	journal	July 2018
A method for digital processing of pile-up events in organic scintillators Belli, F.; Esposito, B.; Marocco, D. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 595, Issue 2 https://doi.org/10.1016/j.nima.2008.06.045	journal	October 2008
Prompt neutrons from photofission and its use in homeland security applications Danagoulian, Areg; Bertozzi, William; Hicks, Curtis L. 2010 IEEE International Conference on Technologies for Homeland Security (HST) https://doi.org/10.1109/THS.2010.5654938	conference	November 2010
The Scintillation Process in Organic Systems Birks, J. B. IRE Transactions on Nuclear Science, Vol. 7, Issue 2-3 https://doi.org/10.1109/TNS2.1960.4315726	journal	June 1960
A simple pulse-shape discrimination circuit Sperr, P.; Spieler, H.; Maier, M. R. Nuclear Instruments and Methods, Vol. 116, Issue 1 https://doi.org/10.1016/0029-554X(74)90578-3	journal	March 1974
Assessing and minimizing contamination in time of flight basedvalidation data Lennox, Kristin P.; Rosenfield, Paul; Blair, Brenton Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 870 https://doi.org/10.1016/j.nima.2017.04.022	journal	October 2017
Methodology and performance comparison of statistical learning pulse shape classifiers as demonstrated with organic liquid scintillator Wurtz, Ron; Blair, Brenton; Chen, Cliff Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 901 https://doi.org/10.1016/j.nima.2018.06.001	journal	September 2018
The luminescence decay of organic scintillators Laustriat, G. Molecular Crystals, Vol. 4, Issue 1-4, p. 127-145 https://doi.org/10.1080/15421406808082905	journal	June 1968
Pile-Up Rejection Using Pulse-Shape Discrimination Jordanov, Valentin T. 2018 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2018 IEEE Nuclear Science Symposium and Medical Imaging Conference Proceedings (NSS/MIC) https://doi.org/10.1109/NSSMIC.2018.8824551	conference	November 2018
Pulse Shape Discrimination with Organic Liquid Scintillator Solutions Horrocks, Donald L. Applied Spectroscopy, Vol. 24, Issue 4, p. 397-404 https://doi.org/10.1366/000370270774371435	journal	July 1970
A fast-neutron coincidence collar using liquid scintillators for fresh fuel verification Beaumont, Jonathan S.; Lee, Tae Hoon; Mayorov, Mikhail Journal of Radioanalytical and Nuclear Chemistry, Vol. 314, Issue 2 https://doi.org/10.1007/s10967-017-5412-x	journal	August 2017
Pile-up and defective pulse rejection by pulse shape discrimination in surface barrier detectors Sjöland, K. A.; Kristiansson, P. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 94, Issue 3 https://doi.org/10.1016/0168-583X(94)95374-0	journal	November 1994
First Search for Short-Baseline Neutrino Oscillations at HFIR with PROSPECT Ashenfelter, J.; Balantekin, A. B.; Baldenegro, C. Physical Review Letters, Vol. 121, Issue 25 https://doi.org/10.1103/PhysRevLett.121.251802	journal	December 2018
Neutron-neutron angular correlations in spontaneous fission of ${}^{252}{Cf}$ and ${}^{240}{Pu}$ Verbeke, J. M.; Nakae, L. F.; Vogt, R. Physical Review C, Vol. 97, Issue 4 https://doi.org/10.1103/PhysRevC.97.044601	journal	April 2018
Pulse discrimination with a Gaussian mixture model on an FPGA Simms, Lance M.; Blair, Brenton; Ruz, Jaime Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 900 https://doi.org/10.1016/j.nima.2018.05.039	journal	August 2018
Pulse shape discrimination in inorganic and organic scintillators. I Winyard, R. A.; Lutkin, J. E.; McBeth, G. W. Nuclear Instruments and Methods, Vol. 95, Issue 1, p. 141-153 https://doi.org/10.1016/0029-554X(71)90054-1	journal	August 1971
Pulse Shape Discrimination - A Survey of Current Teniques Owen, R. B. IRE Transactions on Nuclear Science, Vol. 9, Issue 3 https://doi.org/10.1109/TNS2.1962.4316009	journal	June 1962
A neutron-gamma pulse shape discrimination method based on pure and mixed sources Kaplan, Alan D.; Blair, Brenton; Chen, Cliff Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 919 https://doi.org/10.1016/j.nima.2018.11.136	journal	March 2019
A compact neutron scatter camera for field deployment Goldsmith, John E. M.; Gerling, Mark D.; Brennan, James S. Review of Scientific Instruments, Vol. 87, Issue 8 https://doi.org/10.1063/1.4961111	journal	August 2016

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46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Scintillators
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Pile-up
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Anomaly rejection
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Title: Pulse pileup rejection methods using a two-component Gaussian Mixture Model for fast neutron detection with pulse shape discriminating scintillator

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