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Fast neutron sensitivity of neutron detectors based on Boron-10 converter layers
European Spallat Source ERIC Lund; Univ Perugia, Dept Phys, Perugia, Italy.
European Spallat Source ERIC Lund; Lund University, Lund.
European Spallat Source ERIC Lund.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design. European Spallat Source ERIC Lund.ORCID iD: 0000-0003-3221-2086
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2018 (English)In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 13, no 3, article id P03004Article in journal (Refereed) Published
Abstract [en]

In the last few years many detector technologies for thermal neutron detection have been developed in order to face the shortage of He-3, which is now much less available and more expensive. Moreover the He-3-based detectors can not fulfil the requirements in performance, e.g. the spatial resolution and the counting rate capability needed for the new instruments. The Boron-10-based gaseous detectors have been proposed as a suitable choice. This and other alternative technologies are being developed at ESS. Higher intensities mean higher signals but higher background as well. The signal-to-background ratio is an important feature to study, in particular the gamma-ray and the fast neutron contributions. This paper investigates, for the first time, the fast neutrons sensitivity of B-10-based thermal neutron detector. It presents the study of the detector response as a function of energy threshold and the underlying physical mechanisms. The latter are explained with the help of theoretical considerations and simulations.

Place, publisher, year, edition, pages
2018. Vol. 13, no 3, article id P03004
Keywords [en]
Gaseous detectors, Neutron detectors (cold, thermal, fast neutrons), Wire chambers (MWPC, Thin-gap chambers, drift chambers, drift tubes, proportional chambers etc)
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-33396DOI: 10.1088/1748-0221/13/03/P03004ISI: 000427007300004Scopus ID: 2-s2.0-85044992503OAI: oai:DiVA.org:miun-33396DiVA, id: diva2:1194489
Available from: 2018-04-03 Created: 2018-04-03 Last updated: 2018-07-19Bibliographically approved

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Hall-Wilton, Richard

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