A novel method to measure low flux ambient thermal neutrons with 3 He proportional counters

Zeng, Z.M.; Gong, H.; Yue, Q.; Li, J.M.

doi:10.1016/j.nima.2017.04.009

A novel method to measure low flux ambient thermal neutrons with 3 He proportional counters

Sep 11, 2017

6 pages

Published in:

Nucl.Instrum.Meth.A 866 (2017) 242-247

Published: Sep 11, 2017

DOI:

10.1016/j.nima.2017.04.009

reference search8 citations

Citations per year

Abstract: (Elsevier)

A pulse shape discrimination method to discriminate neutron events from backgrounds based on the double-pulse effect of 3 He proportional counters is proposed and detailed in this paper. We made an ambient thermal neutron measurement system composed of a commercial 3 He proportional counter tube and the corresponding readout electronics. The background of the system has been measured and the minimum detectable amount of the 3 He proportional counter tube will be reduced by an order of magnitude with this method. The system was applied to measure the ambient thermal neutron flux inside a large neutron shielding structure at a deep underground laboratory and the pulse shape discrimination method proves to be effective.

Double-pulse effect
PSD
Underground laboratory
Low background neutron
3 He proportional tube
3He proportional tube

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Figures(0)

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A novel method to measure low flux ambient thermal neutrons with 3 He proportional counters

Citations per year

Neutron flux underground revisited

Monitoring of the thermal neutron flux in the edelweiss ii dark matter direct search experiment

Introduction to the CDEX experiment

Monitoring of the thermal neutron flux in the edelweiss ii dark matter direct search experiment

Background neutron flux determination at a depth of 3200 mwe underground

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Thermal neutron background measurement in cjpl

Low energy neutron background in deep underground laboratories

Alpha-particle emission from contaminants in counter materials, Nuclear Instruments and Methods in Physics

Further comments on the geometrical efficiency of a parallel-disk source and detector system, Nuclear Instruments and Methods in Physics

Event Identification in 3^33He Proportional Counters Using Risetime Discrimination

Event Identification in $^3$ He Proportional Counters Using Risetime Discrimination