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B-10 multi-grid proportional gas counters for large area thermal neutron detectors

Andersen, Ken LU ; Bigault, T. ; Birch, J. ; Buffet, J. C. ; Correa, J. ; Hall-Wilton, Richard LU ; Hultman, L. ; Höglund, Carina LU ; Guerard, B. and Jensen, J. , et al. (2013) In Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment 720. p.116-121
Abstract
He-3 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 B-10 or (B4C)-B-10 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 (B4C)-B-10 films of 1 mu m 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... (More)
He-3 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 B-10 or (B4C)-B-10 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 (B4C)-B-10 films of 1 mu m 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 x 8 cm are reported; a detection efficiency of 48% has been measured at 2.5 angstrom with a monochromatic neutron beam line, showing the good potential of this new technique. (C) 2013 Elsevier B.V. All rights reserved. (Less)
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keywords
Neutron detector, Boron convertor, Multi-grid
in
Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
volume
720
pages
116 - 121
publisher
Elsevier
external identifiers
  • wos:000320597900030
  • scopus:84878853692
ISSN
0167-5087
DOI
10.1016/j.nima.2012.12.021
language
English
LU publication?
yes
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cf56a12a-1c46-42e3-ae58-d84eff60dda4 (old id 3979989)
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2016-04-01 13:15:49
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2020-01-15 03:25:19
@article{cf56a12a-1c46-42e3-ae58-d84eff60dda4,
  abstract     = {He-3 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 B-10 or (B4C)-B-10 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 (B4C)-B-10 films of 1 mu m 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 x 8 cm are reported; a detection efficiency of 48% has been measured at 2.5 angstrom with a monochromatic neutron beam line, showing the good potential of this new technique. (C) 2013 Elsevier B.V. All rights reserved.},
  author       = {Andersen, Ken and Bigault, T. and Birch, J. and Buffet, J. C. and Correa, J. and Hall-Wilton, Richard and Hultman, L. and Höglund, Carina and Guerard, B. and Jensen, J. and Khaplanov, A. and Kirstein, O. and Piscitelli, F. and Van Esch, P. and Vettier, Christian},
  issn         = {0167-5087},
  language     = {eng},
  pages        = {116--121},
  publisher    = {Elsevier},
  series       = {Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment},
  title        = {B-10 multi-grid proportional gas counters for large area thermal neutron detectors},
  url          = {http://dx.doi.org/10.1016/j.nima.2012.12.021},
  doi          = {10.1016/j.nima.2012.12.021},
  volume       = {720},
  year         = {2013},
}