Preliminary performance test of tubular neutron detector based on SiPM signal readout

被引：0
|
作者：
Liu Yun [1 ,4 ]
Tang Bin [2 ,3 ,4 ]
Wu Chong [1 ,6 ]
Huang Chang [4 ,7 ]
Sun Zhi-Jia [2 ,3 ,4 ,5 ]
Zhang Yan-chao [1 ]
Lin Chun-Dan [1 ]
机构：
[1] China Univ Petr, Beijing 102249, Peoples R China
[2] Chinese Acad Sci, Inst High Energy Phys, State Key Lab Particle Detect & Elect, Beijing 100049, Peoples R China
[3] Chinese Acad Sci, Inst High Energy Phys, China Spallat Neutron Source, Dongguan 523803, Peoples R China
[4] Dongguan Inst Neutron Sci, Dongguan 523808, Peoples R China
[5] Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai 519082, Peoples R China
[6] China Univ Petr Beijing Karamay, Karamay 834000, Peoples R China
[7] Lanzhou Univ, Coll Sci & Technol, Lanzhou 730000, Peoples R China
来源：
SECOND SYMPOSIUM ON NOVEL TECHNOLOGY OF X-RAY IMAGING | 2019年 / 11068卷
关键词：
scintillator neutron detector; 6 LiF/ZnS(Ag) scintillator; Wavelength shifting fiber; detection efficiency; SiPM; MC simulation;
D O I：
10.1117/12.2524696
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Due to the shortage and the rapidly increasing price of the 3 He gas, seeking new types of position-sensitive neutron detectors is urgent. In order to fulfill the requirements of Chinese neutron spectrometers for neutron detectors, the research on neutron detector based on (LiF)-Li-6 / ZnS (Ag) scintillator and wavelength-shifting fiber (WLSF) structure neutron detectors was developed. It has the advantages of high neutron detection efficiency, good position resolution and the ability to splicing large areas. This paper proposed a tubular neutron detector structure. It consists of two layers of rolled (LiF)-Li-6/ZnS(Ag) scintillators sandwich with two wavelength-shifting fibers, and two SiPMs (Silicon photomultipliers) for the photons readout. By MC simulation, we obtained the thermal neutron conversion efficiency of (LiF)-Li-6/ZnS(Ag) scintillation screens with different thicknesses and rolled diameters, and optimized the detector structure. The characteristics of the key components are studied. A small detector prototype has been constructed. and been tested by the neutron beam. The preliminary test results showed that the detector can work well.
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页数：9
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