Concept of a fast neutron detector based on 10B-RPCs

A. Morozov; L. M. S. Margato; A. Blanco; D. Galaviz

doi:10.1088/1748-0221/17/02/P02016

Concept of a fast neutron detector based on 10B-RPCs

Instrumentation and Detectors 2022-02-23 v1

Authors: A. Morozov , L. M. S. Margato , A. Blanco , D. Galaviz

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Abstract

We propose an alternative approach for the detection of fast neutrons in the energy range from 10-4 to 5 MeV based on 10B-RPCs (hybrid double-gap Resistive Plate Chambers with 10B4C neutron converters) surrounded by a polyethylene moderator. The detection efficiency as a function of the neutron energy is obtained in Monte Carlo simulations performed with the Geant4 toolkit for several detector configurations. The thickness of the neutron converter is optimized for the maximum efficiency. The results show that for this type of detector it is possible to obtain an average detection efficiency larger than 50% with a weak dependence on the neutron energy. The dark count rate and gamma sensitivity are also discussed.

Keywords

fast neutron detector boron-10 rpc polyethylene moderator geant4 detection efficiency monte carlo simulation

Cite

@article{arxiv.2112.12578,
  title  = {Concept of a fast neutron detector based on 10B-RPCs},
  author = {A. Morozov and L. M. S. Margato and A. Blanco and D. Galaviz},
  journal= {arXiv preprint arXiv:2112.12578},
  year   = {2022}
}

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