A first comparison of the responses of a He-4-based fast-neutron detector and a NE-213 liquid-scintillator reference detector

R. Jebali, Julius Scherzinger, J. R. M. Annand, R. Chandra, G. Davatz, Kevin Fissum, H. Friederich, U. Gendotti, Richard Hall-Wilton, E. Hakansson, Kalliopi Kanaki, Magnus Lundin, D. Murer, Björn Nilsson, Anders Rosborg, Håkan Svensson

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A first comparison has been made between the pulse-shape discrimination characteristics of a novel He-4-based pressurized scintillation detector and a NE-213 liquicl-scintillator reference detector using an Am/Be mixed-field neutron and gamma-ray source and a high-resolution scintillation-pulse digitizer. In particular, the capabilities of the two fast neutron detectors to discriminate between neutrons and gamma-rays were investigated. The NE-213 liquicl-scintillator reference cell produced a wide range of scintillation-light yields in response to he gamma-ray field of the source. In stark contrast, clue to the size and pressure of the He-4 gas volume, the He-4-based detector registered a maximum scintillation-light yield of 750 keV(ee) to the same gamma-ray field. Pulse-shape discrimination for particles with scintillation-light yields of more than 750 keV(ee) was excellent in the case of the He-4-based detector. Above 750 keV(ee) its signal was unambiguously neutron, enabling particle identification based entirely upon the amount of scintillation light produced. (C) 2015 The Authors. Published by Elsevier B.V.

Subject classification (UKÄ)

  • Accelerator Physics and Instrumentation

Free keywords

  • He-4
  • NE-213
  • Scintillation
  • Gamma-rays
  • Fast neutrons
  • Pulse-shape
  • discrimination

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