Directional fast neutron detection using a time projection chamber and plastic scintillation detectors

被引：5
|
作者：
Fu, Yidong
Tian, Yang
Li, Yulan
Yang, Jian
Li, Jin
机构：
[1] Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Minist Educ, Key Lab Particle & Radiat Imaging, Beijing 100084, Peoples R China
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2020年 / 954卷
关键词：
Directional fast neutron detection; Neutron scatter imaging; Special nuclear material; Time projection chamber; Plastic scintillation detector;
D O I：
10.1016/j.nima.2018.10.123
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A new method for directional fast neutron detection is proposed based on a neutron time projection chamber (TPC) and position-sensitive plastic scintillation detectors. The detection system can efficiently locate the approximate location of a hot spot with 4 pi field-of-view using only the neutron TPC. Then, the system generates a high-resolution image of the hot spot using selected coincidence events in the TPC and the scintillation detectors. A prototype was built and tested using a Cf-252 source. An efficiency of 7.1x10(-3) was achieved for fast searching. The angular resolution was 7.8 degrees (full width at half maximum, FWHM) for high-resolution imaging using the simple back projection method.
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页数：5
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