Development of Prototype Simplified Neutron Scatter Camera for Nuclear Safeguards Applications

Neutron scatter cameras are a type of directional neutron detectors that rely on multiple neutron scatters to generate images that can reveal the direction and distribution of neutron sources. Fast neutron cameras which have recently been developed rely on multiple detector volumes and make use of n...

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Autores principales:	Harvey Taylor, Enqvist Andreas
Formato:	article
Lenguaje:	EN
Publicado:	EDP Sciences 2021
Materias:	neutron imaging neutron detection international safeguards Physics QC1-999
Acceso en línea:	https://doaj.org/article/a4bbda6c25374e628eb90a7b09677893
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id	oai:doaj.org-article:a4bbda6c25374e628eb90a7b09677893
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spelling	oai:doaj.org-article:a4bbda6c25374e628eb90a7b096778932021-12-02T17:12:46ZDevelopment of Prototype Simplified Neutron Scatter Camera for Nuclear Safeguards Applications2100-014X10.1051/epjconf/202125307008https://doaj.org/article/a4bbda6c25374e628eb90a7b096778932021-01-01T00:00:00Zhttps://www.epj-conferences.org/articles/epjconf/pdf/2021/07/epjconf_animma2021_07008.pdfhttps://doaj.org/toc/2100-014XNeutron scatter cameras are a type of directional neutron detectors that rely on multiple neutron scatters to generate images that can reveal the direction and distribution of neutron sources. Fast neutron cameras which have recently been developed rely on multiple detector volumes and make use of neutron time-of-flight measurements. These designs, though effective in localizing the source direction, relies on a large amount of detection and electrical equipment, thus increasing size, cost, and complexity of the systems to unreasonable levels for some applications. This project seeks to develop a compact scatter camera that is less expensive than systems relying on multiple detector volumes. Crucially, two components and capabilities are needed to achieve this: fast scintillation detection materials and picosecond electrical pulse timing. Utilizing such electronics, distinguishing between scintillation light pulses generated by the same neutron within one detector volume is possible. An MCNPX-PoliMi model of such a system has been developed to guide prototype designs. A cube of EJ-230 fast plastic scintillator and six photomultiplier tubes (PMTs) were used to construct the prototype camera that localizes neutron sources based on the principle of cone back projection. Prototypes of the system in one, two, and three dimensions have shown promising initial results when coupled with a script that algorithmically identifies candidate neutron double scatter events and back projects probability cones in the direction of possible sources. Imaging resolution/quality, double scatter efficiency, and cost for the system are quantified. Paths forward for further improvement of a future system based on this camera’ operating principles are discussed.Harvey TaylorEnqvist AndreasEDP Sciencesarticleneutron imagingneutron detectioninternational safeguardsPhysicsQC1-999ENEPJ Web of Conferences, Vol 253, p 07008 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	neutron imaging neutron detection international safeguards Physics QC1-999
spellingShingle	neutron imaging neutron detection international safeguards Physics QC1-999 Harvey Taylor Enqvist Andreas Development of Prototype Simplified Neutron Scatter Camera for Nuclear Safeguards Applications
description	Neutron scatter cameras are a type of directional neutron detectors that rely on multiple neutron scatters to generate images that can reveal the direction and distribution of neutron sources. Fast neutron cameras which have recently been developed rely on multiple detector volumes and make use of neutron time-of-flight measurements. These designs, though effective in localizing the source direction, relies on a large amount of detection and electrical equipment, thus increasing size, cost, and complexity of the systems to unreasonable levels for some applications. This project seeks to develop a compact scatter camera that is less expensive than systems relying on multiple detector volumes. Crucially, two components and capabilities are needed to achieve this: fast scintillation detection materials and picosecond electrical pulse timing. Utilizing such electronics, distinguishing between scintillation light pulses generated by the same neutron within one detector volume is possible. An MCNPX-PoliMi model of such a system has been developed to guide prototype designs. A cube of EJ-230 fast plastic scintillator and six photomultiplier tubes (PMTs) were used to construct the prototype camera that localizes neutron sources based on the principle of cone back projection. Prototypes of the system in one, two, and three dimensions have shown promising initial results when coupled with a script that algorithmically identifies candidate neutron double scatter events and back projects probability cones in the direction of possible sources. Imaging resolution/quality, double scatter efficiency, and cost for the system are quantified. Paths forward for further improvement of a future system based on this camera’ operating principles are discussed.
format	article
author	Harvey Taylor Enqvist Andreas
author_facet	Harvey Taylor Enqvist Andreas
author_sort	Harvey Taylor
title	Development of Prototype Simplified Neutron Scatter Camera for Nuclear Safeguards Applications
title_short	Development of Prototype Simplified Neutron Scatter Camera for Nuclear Safeguards Applications
title_full	Development of Prototype Simplified Neutron Scatter Camera for Nuclear Safeguards Applications
title_fullStr	Development of Prototype Simplified Neutron Scatter Camera for Nuclear Safeguards Applications
title_full_unstemmed	Development of Prototype Simplified Neutron Scatter Camera for Nuclear Safeguards Applications
title_sort	development of prototype simplified neutron scatter camera for nuclear safeguards applications
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/a4bbda6c25374e628eb90a7b09677893
work_keys_str_mv	AT harveytaylor developmentofprototypesimplifiedneutronscattercamerafornuclearsafeguardsapplications AT enqvistandreas developmentofprototypesimplifiedneutronscattercamerafornuclearsafeguardsapplications
_version_	1718381396843560960

Development of Prototype Simplified Neutron Scatter Camera for Nuclear Safeguards Applications

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