Development of a dual-mode energy-resolved neutron imaging detector: High spatial resolution and large field of view

被引:0
|
作者
Yang, Wenqin [1 ,2 ,3 ]
Zhou, Jianrong [1 ,2 ,3 ]
Yang, Jianqing [1 ,2 ]
Jiang, Xingfen [1 ,2 ]
Tan, Jinhao [1 ,2 ,4 ]
Zhu, Lin [1 ,2 ]
Zhou, Xiaojuan [1 ,2 ]
Xia, Yuanguang [1 ,2 ]
Yu, Li [1 ,2 ]
Wang, Xiuku [1 ,2 ]
Teng, Haiyun [1 ,2 ]
Li, Jiajie [1 ,2 ]
Qiu, Yongxiang [1 ,2 ]
Shen, Peixun [1 ,2 ]
Wang, Songlin [1 ,2 ]
Wei, Yadong [5 ]
Song, Yushou [4 ]
Zhuang, Jian [1 ,2 ,3 ]
Zhao, Yubin [1 ,2 ,3 ]
Zhang, Junrong [1 ,2 ,3 ]
Sun, Zhijia [1 ,2 ,3 ]
Chen, Yuanbo [1 ,2 ,3 ]
机构
[1] Chinese Acad Sci, Inst High Energy Phys, State Key Lab Particle Detect & Elect, Beijing 100049, Peoples R China
[2] Spallat Neutron Source Sci Ctr, Dongguan 523803, Guangdong, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[4] Harbin Engn Univ, Harbin 150000, Heilongjiang, Peoples R China
[5] Dongguan Univ Technol, Inst Sci & Technol Innovat, Inst Sci & Technol Innovat & Adv Mfg, Dongguan 523803, Guangdong, Peoples R China
基金
中国国家自然科学基金;
关键词
Neutron detector; Energy resolved neutron imaging; TOF; Event reconstruction algorithm; READOUT;
D O I
10.1016/j.net.2024.02.042
中图分类号
TL [原子能技术]; O571 [原子核物理学];
学科分类号
0827 ; 082701 ;
摘要
Energy-resolved neutron imaging is an effective way to investigate the internal structure and residual stress of materials. Different sample sizes have varying requirements for the detector's imaging field of view (FOV) and spatial resolution. Therefore, a dual-mode energy-resolved neutron imaging detector was developed, which mainly consisted of a neutron scintillator screen, a mirror, imaging lenses, and a time-stamping optical fast camera. This detector could operate in a large FOV mode or a high spatial resolution mode. To evaluate the performance of the detector, the neutron wavelength spectra and the multiple spatial resolution tests were conducted at CSNS. The results demonstrated that the detector accurately measured the neutron wavelength spectra selected by a bandwidth chopper. The best spatial resolution was about 20 mu m in high spatial resolution mode after event reconstruction, and a FOV of 45.0 mm x 45.0 mm was obtained in large FOV mode. The feasibility was validated to change the spatial resolution and FOV by replacing the scintillator screen and adjusting the lens magnification.
引用
收藏
页码:2799 / 2805
页数:7
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