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10B multi-grid proportional gas counters for large area thermal neutrondetectors
European Spallation Source ESS AB, Lund, Sweden.
Institut Laue Langevin, Grenoble, Cedex 9, France.
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, The Institute of Technology.
Institut Laue Langevin, Grenoble, Cedex 9, France.
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2013 (English)In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, E-ISSN 1872-9576, Vol. 720, 116-121 p.Article in journal (Refereed) Published
Abstract [en]

3He was a popular material in neutrons detectors until its availability dropped drastically in 2008. The development of techniques based on alternative convertors is now of high priority for neutron research institutes. Thin films of 10B or 10B4C have been used in gas proportional counters to detect neutrons, but until now, only for small or medium sensitive area. We present here the multi-grid design, introduced at the ILL and developed in collaboration with ESS for LAN (large area neutron) detectors. Typically thirty 10B4C films of 1 μm thickness are used to convert neutrons into ionizing particles which are subsequently detected in a proportional gas counter. The principle and the fabrication of the multi-grid are described and some preliminary results obtained with a prototype of 200 cm×8 cm are reported; a detection efficiency of 48% has been measured at 2.5 Å with a monochromatic neutron beam line, showing the good potential of this new technique.

Place, publisher, year, edition, pages
Elsevier, 2013. Vol. 720, 116-121 p.
Keyword [en]
Neutron detector; Boron convertor; Multi-grid
National Category
Accelerator Physics and Instrumentation
Identifiers
URN: urn:nbn:se:liu:diva-94696DOI: 10.1016/j.nima.2012.12.021OAI: oai:DiVA.org:liu-94696DiVA: diva2:634430
Conference
Selected papers from the 2nd International Conference Frontiers in Diagnostic Technologies (ICFDT2)
Available from: 2013-07-01 Created: 2013-07-01 Last updated: 2017-12-06Bibliographically approved

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Birch, JensHultman, LarsHöglund, CarinaJensen, Jens

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Birch, JensHultman, LarsHöglund, CarinaJensen, Jens
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Thin Film PhysicsThe Institute of TechnologyLinköping University
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Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Accelerator Physics and Instrumentation

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CiteExportLink to record
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  • harvard1
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