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

被引：0
|
作者：
Morozov, A. [1 ]
Margato, L. M. S. [1 ]
Blanco, A. [1 ]
Galaviz, D. [2 ,3 ]
机构：
[1] Univ Coimbra, LIP Coimbra, Dept Fis, Rua Largo, P-3004516 Coimbra, Portugal
[2] LIP Lisboa, Av Prof Gama Pinto 2, P-1649019 Lisbon, Portugal
[3] Univ Lisbon, Fac Sci, P-1749003 Lisbon, Portugal
来源：
JOURNAL OF INSTRUMENTATION | 2022年 / 17卷 / 02期
关键词：
Neutron detectors (cold; thermal; fast neutrons); Resistive-plate chambers; REACTOR; ALPHA;
D O I：
10.1088/1748-0221/17/02/P02016
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
We propose an alternative approach for the detection of fast neutrons in the energy range from 10(-4) to 5 MeV based on B-10-RPCs (hybrid double-gap Resistive Plate Chambers with (B4C)-B-10 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.
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页数：22
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