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Investigation of gamma-ray sensitivity of neutron detectors based on thin converter films

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Author

  • Anton Khaplanov
  • F. Piscitelli
  • J-C Buffet
  • J-F Clergeau
  • J. Correa
  • P. van Esch
  • M. Ferraton
  • B. Guerard
  • Richard Hall-Wilton

Summary, in English

Currently, many detector technologies for thermal neutron detection are in development in order to lower the demand for the rare He-3 gas. Gas detectors with solid thin film neutron converters readout by gas proportional counter method have been proposed as an appropriate choice for applications where large area coverage is necessary. In this paper, we investigate the probability for gamma-rays to generate a false count in a neutron measurement. Simulated results are compared to measurement with B-10 thin film prototypes and a He-3 detector. It is demonstrated that equal gamma-ray rejection to that of He-3 tubes is achieved with the new technology. The arguments and results presented here are also applicable to gas detectors with converters other than solid B-10 layers, such as Li-6 layers and (BF3)-B-10 gas.

Publishing year

2013

Language

English

Publication/Series

Journal of Instrumentation

Volume

8

Document type

Journal article

Publisher

IOP Publishing

Topic

  • Accelerator Physics and Instrumentation

Keywords

  • Detector modelling and simulations I (interaction of radiation with
  • fast neutrons)
  • Gaseous detectors
  • thermal
  • Neutron detectors (cold
  • interaction of photons with matter
  • matter
  • interaction of hadrons with
  • etc)

Status

Published

ISBN/ISSN/Other

  • ISSN: 1748-0221