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Real-time source localisation by passive, fast-neutron time-of-flight with organic scintillators for facility-installed applications

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Real-time source localisation by passive, fast-neutron time-of-flight with organic scintillators for facility-installed applications. / Astromskas, V.; Bradnam, S.C.; Packer, L.W. et al.
In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 994, 165094, 01.04.2021.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Astromskas, V, Bradnam, SC, Packer, LW, Aspinall, MD & Joyce, MJ 2021, 'Real-time source localisation by passive, fast-neutron time-of-flight with organic scintillators for facility-installed applications', Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 994, 165094. https://doi.org/10.1016/j.nima.2021.165094

APA

Astromskas, V., Bradnam, S. C., Packer, L. W., Aspinall, M. D., & Joyce, M. J. (2021). Real-time source localisation by passive, fast-neutron time-of-flight with organic scintillators for facility-installed applications. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 994, Article 165094. https://doi.org/10.1016/j.nima.2021.165094

Vancouver

Astromskas V, Bradnam SC, Packer LW, Aspinall MD, Joyce MJ. Real-time source localisation by passive, fast-neutron time-of-flight with organic scintillators for facility-installed applications. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2021 Apr 1;994:165094. Epub 2021 Jan 30. doi: 10.1016/j.nima.2021.165094

Author

Astromskas, V. ; Bradnam, S.C. ; Packer, L.W. et al. / Real-time source localisation by passive, fast-neutron time-of-flight with organic scintillators for facility-installed applications. In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2021 ; Vol. 994.

Bibtex

@article{f70c3e8db315424b8e055dabe77bfc6a,
title = "Real-time source localisation by passive, fast-neutron time-of-flight with organic scintillators for facility-installed applications",
abstract = "Fast neutron time-of-flight (ToF) has been used to characterise the location of a source of a mixed radiation field. Two EJ-309 organic scintillators and a fast, digital, data acquisition system have been used in a variety of positions to identify the location of a 252Cf neutron source inside a steel, water-filled tank. A methodology for extracting the distance between the neutron source and the neutron detector has been developed and verified with MCNP simulations. A reconstruction algorithm using the ToF data has been developed. The location of the neutron source has been estimated on this basis to be within 20 cm of its known location with a spatial resolution of ±7.8 cm. p-values extracted from the null test hypothesis have been estimated to be 0.975 and 0.996 for experimental and simulation data, respectively. By correctly identifying the location of the source, the potential for the system to discern between scattered and unscattered neutrons is demonstrated. ",
keywords = "Californium-252, Fast neutron, Localisation, MCNP, Time-of-flight, Data acquisition, Ionization, Location, Neutron sources, Scintillation counters, Data acquisition system, MCNP simulations, Mixed radiation fields, Organic scintillator, Reconstruction algorithms, Simulation data, Source localisation, Spatial resolution, Neutrons",
author = "V. Astromskas and S.C. Bradnam and L.W. Packer and M.D. Aspinall and M.J. Joyce",
year = "2021",
month = apr,
day = "1",
doi = "10.1016/j.nima.2021.165094",
language = "English",
volume = "994",
journal = "Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",
issn = "0168-9002",
publisher = "ELSEVIER SCIENCE BV",

}

RIS

TY - JOUR

T1 - Real-time source localisation by passive, fast-neutron time-of-flight with organic scintillators for facility-installed applications

AU - Astromskas, V.

AU - Bradnam, S.C.

AU - Packer, L.W.

AU - Aspinall, M.D.

AU - Joyce, M.J.

PY - 2021/4/1

Y1 - 2021/4/1

N2 - Fast neutron time-of-flight (ToF) has been used to characterise the location of a source of a mixed radiation field. Two EJ-309 organic scintillators and a fast, digital, data acquisition system have been used in a variety of positions to identify the location of a 252Cf neutron source inside a steel, water-filled tank. A methodology for extracting the distance between the neutron source and the neutron detector has been developed and verified with MCNP simulations. A reconstruction algorithm using the ToF data has been developed. The location of the neutron source has been estimated on this basis to be within 20 cm of its known location with a spatial resolution of ±7.8 cm. p-values extracted from the null test hypothesis have been estimated to be 0.975 and 0.996 for experimental and simulation data, respectively. By correctly identifying the location of the source, the potential for the system to discern between scattered and unscattered neutrons is demonstrated.

AB - Fast neutron time-of-flight (ToF) has been used to characterise the location of a source of a mixed radiation field. Two EJ-309 organic scintillators and a fast, digital, data acquisition system have been used in a variety of positions to identify the location of a 252Cf neutron source inside a steel, water-filled tank. A methodology for extracting the distance between the neutron source and the neutron detector has been developed and verified with MCNP simulations. A reconstruction algorithm using the ToF data has been developed. The location of the neutron source has been estimated on this basis to be within 20 cm of its known location with a spatial resolution of ±7.8 cm. p-values extracted from the null test hypothesis have been estimated to be 0.975 and 0.996 for experimental and simulation data, respectively. By correctly identifying the location of the source, the potential for the system to discern between scattered and unscattered neutrons is demonstrated.

KW - Californium-252

KW - Fast neutron

KW - Localisation

KW - MCNP

KW - Time-of-flight

KW - Data acquisition

KW - Ionization

KW - Location

KW - Neutron sources

KW - Scintillation counters

KW - Data acquisition system

KW - MCNP simulations

KW - Mixed radiation fields

KW - Organic scintillator

KW - Reconstruction algorithms

KW - Simulation data

KW - Source localisation

KW - Spatial resolution

KW - Neutrons

U2 - 10.1016/j.nima.2021.165094

DO - 10.1016/j.nima.2021.165094

M3 - Journal article

VL - 994

JO - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

SN - 0168-9002

M1 - 165094

ER -