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
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.
引用
收藏
页数:5
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