liu.seSök publikationer i DiVA
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Investigation of background in large-area neutron detectors due to alpha emission from impurities in aluminium
Linköpings universitet, Institutionen för fysik, kemi och biologi, Tunnfilmsfysik. Linköpings universitet, Tekniska fakulteten.
Institute Laue Langevin, France.
Institute Laue Langevin, France.
Institute Laue Langevin, France.
Visa övriga samt affilieringar
2015 (Engelska)Ingår i: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 10, s. 1-14Artikel i tidskrift (Refereegranskat) Published
Resurstyp
Text
Abstract [en]

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.

Ort, förlag, år, upplaga, sidor
IOP PUBLISHING LTD , 2015. Vol. 10, s. 1-14
Nyckelord [en]
Instrumentation for neutron sources; Gaseous detectors; Materials for gaseous detectors; Neutron detectors (cold, thermal, fast neutrons)
Nationell ämneskategori
Acceleratorfysik och instrumentering
Identifikatorer
URN: urn:nbn:se:liu:diva-124525DOI: 10.1088/1748-0221/10/10/P10019ISI: 000367674700021OAI: oai:DiVA.org:liu-124525DiVA, id: diva2:899507
Anmärkning

Funding Agencies|CRISP project (European Commission 7th Framework Programme Grant) [283745]

Tillgänglig från: 2016-02-02 Skapad: 2016-02-01 Senast uppdaterad: 2017-11-30

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltext

Personposter BETA

Birch, JensHultman, LarsHöglund, CarinaJensen, Jens

Sök vidare i DiVA

Av författaren/redaktören
Birch, JensHultman, LarsHöglund, CarinaJensen, Jens
Av organisationen
TunnfilmsfysikTekniska fakultetenInstitutionen för fysik, kemi och biologi
I samma tidskrift
Journal of Instrumentation
Acceleratorfysik och instrumentering

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 274 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf