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A high-efficiency thermal neutron detector based on thin 3D (B4C)-B-10 converters for high-rate applications
Univ Milano Bicocca, Italy; CNR, Italy; INFN, Italy.
CNR, Italy.
CNR, Italy.
CNR, Italy.
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2018 (English)In: Europhysics letters, ISSN 0295-5075, E-ISSN 1286-4854, Vol. 123, no 5, article id 52001Article in journal (Refereed) Published
Abstract [en]

new position-sensitive thermal neutron detector based on boron-coated converters has been developed as an alternative to todays standard He-3-based technology for application to thermal neutron scattering. The key element of the development is a novel 3D (B4C)-B-10 converter which has been ad hoc designed and realized with the aim of combining a high neutron conversion probability via the B-10(n, alpha)(7) Li reaction together with an efficient collection of the produced charged particles. The developed 3D converter is composed of thin aluminium grids made by a micro-waterjet technique and coated on both sides with a thin layer of( 10)B(4)C. When coupled to a GEM detector this converter allows reaching neutron detection efficiencies close to 50% at neutron wavelengths equal to 4 angstrom. In addition, the new detector features a spatial resolution of about 5 min and can sustain counting rates well in excess of 1 MHz/cm(2). The newly developed neutron detector will enable time-resolved measurements of different kind of samples in neutron scattering experiments at high flux spallation sources and can find a use in applications where large areas and custom geometries of thermal neutron detectors are foreseen. Copyright (C) EPLA, 2018

Place, publisher, year, edition, pages
IOP PUBLISHING LTD , 2018. Vol. 123, no 5, article id 52001
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:liu:diva-152096DOI: 10.1209/0295-5075/123/52001ISI: 000446207300001OAI: oai:DiVA.org:liu-152096DiVA, id: diva2:1256685
Note

Funding Agencies|EU BrightnESS project [676548]

Available from: 2018-10-17 Created: 2018-10-17 Last updated: 2018-10-17

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Höglund, Carina
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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
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  • vancouver
  • oxford
  • Other style
More styles
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  • de-DE
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  • Other locale
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Output format
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