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  • Birch, JLinköpings universitet,Tunnfilmsfysik,Tekniska fakulteten (author)

Investigation of background in large-area neutron detectors due to alpha emission from impurities in aluminium

  • Article/chapterEnglish2015

Publisher, publication year, extent ...

  • IOP PUBLISHING LTD,2015

Numbers

  • LIBRIS-ID:oai:lup.lub.lu.se:ea00c30f-1528-4b57-bde7-d189050f7d4e
  • https://lup.lub.lu.se/record/8761568URI
  • https://doi.org/10.1088/1748-0221/10/10/P10019DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-26714URI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-124525URI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • Funding Agencies|CRISP project (European Commission 7th Framework Programme Grant) [283745]
  • Thermal neutron detector based on films of (B4C)-B-10 have been developed as an alternative to He-3 detectors. In particular, The Multi-Grid detector concept is considered for future large area detectors for ESS and ILL instruments. An excellent signal-to-background ratio is essential to attain expected scientific results. Aluminium is the most natural material for the mechanical structure of of the Multi-Grid detector and other similar concepts due to its mechanical and neutronic properties. Due to natural concentration of alpha emitters, however, the background from alpha particles misidentified as neutrons can be unacceptably high. We present our experience operating a detector prototype affected by this issue. Monte Carlo simulations have been used to confirm the background as alpha particles. The issues have been addressed in the more recent implementations of the Multi-Grid detector by the use of purified aluminium as well as Ni-plating of standard aluminium. The result is the reduction in background by two orders of magnitude. A new large-area prototype has been built incorporating these modifications.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Jensen, JensLinköpings universitet,Tunnfilmsfysik,Tekniska fakulteten(Swepub:liu)jenje80 (author)
  • Clergeau, J. -F.Institute Laue Langevin, 71 avenue des Martyrs, Grenoble, France (author)
  • van Esch, P.Institute Laue Langevin, 71 avenue des Martyrs, Grenoble, France (author)
  • Ferraton, M.Institute Laue Langevin, 71 avenue des Martyrs, Grenoble, France (author)
  • Guerard, B.Institute Laue Langevin, 71 avenue des Martyrs, Grenoble, France (author)
  • Hall-Wilton, RichardMittuniversitetet,Mid Sweden University,Lund University,Lunds universitet,European Spallation Source ESS AB,Stiftelser och övriga anknutna verksamheter,Other Institutions and Utilities,Avdelningen för elektronikkonstruktion,European Spallation Source, P.O Box 176, Lund, Sweden,European Spallat Source, Sweden; Mid Sweden University, Sweden(Swepub:miun)exricwil (author)
  • Hultman, LarsLinköpings universitet,Tunnfilmsfysik,Tekniska fakulteten(Swepub:liu)larhu75 (author)
  • Höglund, CarinaLinköpings universitet,Tunnfilmsfysik,Tekniska fakulteten,European Spallat Source, Sweden(Swepub:liu)carho79 (author)
  • Jensen, J. (author)
  • Khaplanov, AntonLund University,Lunds universitet,European Spallation Source ESS AB,Stiftelser och övriga anknutna verksamheter,Other Institutions and Utilities,Institute Laue Langevin, 71 avenue des Martyrs, Grenoble, France,Institute Laue Langevin, France; European Spallat Source, Sweden(Swepub:lu)esss-aok (author)
  • Piscitelli, F.Institute Laue Langevin, 71 avenue des Martyrs, Grenoble, France,Institute Laue Langevin, France; European Spallat Source, Sweden (author)
  • Linköpings universitetTunnfilmsfysik (creator_code:org_t)

Related titles

  • In:Journal of Instrumentation: IOP PUBLISHING LTD101748-0221

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