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Chin. Phys. B, 2026, Vol. 35(8): 080703    DOI: 10.1088/1674-1056/ae15f7
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A Compton imaging detection system for neutron resonance capture analysis at Back-n

Jin-Cheng Wang(王金成)1,2, Jie Ren(任杰)2,†, Wei Jiang(蒋伟)3,4, Suyalatu Zhang(张苏雅拉吐)5, Ping Cao(曹平)6,7, Xichao Ruan(阮锡超)2,‡, Hao-Lan Yang(杨皓岚)2, Jie-Ming Xue(薛洁明)2, Ying-Yi Liu(刘颖一)2, Jie Bao(鲍杰)2, Guang-Yuan Luan(栾广源)2, Qi-Wei Zhang(张奇玮)2, Yi-Jia Qiu(邱奕嘉)3,4, Yong-Hao Chen(陈永浩)3,4, Rui-Rui Fan(樊瑞睿)3,4,8, Wei-Yu Wang(王维宇)9,10, Zhen-Yu Sun(孙振宇)11, De-Xin Wang(王德鑫)5, and Mei-Rong Huang(黄美容)5
1 College of Science, Inner Mongolia University of Technology, Hohhot 010051, China;
2 Key Laboratory of Nuclear Data, China Institute of Atomic Energy, Beijing 102413, China;
3 Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, China;
4 Spallation Neutron Source Science Center, Dongguan 523803, China;
5 College of Physics and Electronic Information, Inner Mongolia University for Nationalities, Tongliao 028000, China;
6 State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China;
7 School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230026, China;
8 State Key Laboratory of Particle Detection and Electronics, Institute of High Energy Physics Chinese Academy of Sciences, Beijing 100049, China;
9 State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China;
10 Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China;
11 Institute of Advanced Technology, University of Science and Technology of China, Hefei 230031, China
Abstract  Neutron resonance capture analysis (NRCA) is a method that utilizes the resonance structures in neutron-induced reactions to determine the elemental composition of materials. It is used for the non-destructive analysis of cultural heritage objects, archaeological artifacts, and reference materials. The back streaming white neutron facility (Back-n) of the China Spallation Neutron Source (CSNS) provides neutron energy ranging from eV to MeV, offering favorable beam conditions for the development of neutron resonance capture imaging (NRCI). Compton imaging is applied to achieve NRCI in this work. A series of dedicated measurements with calibrated sources and with Back-n neutron beam incident on a 197Au sample have been carried out. The results indicate that this detector can achieve NRCI at Back-n. This work provides a foundation for nuclide identification using NRCI at the Back-n facility.
Keywords:  NRCA      Compton imaging      Back-n      CeBr3      signal to background ratio  
Received:  29 August 2025      Revised:  14 October 2025      Accepted manuscript online:  22 October 2025
PACS:  07.85.Fv (X- and γ-ray sources, mirrors, gratings, and detectors)  
  07.85.-m (X- and γ-ray instruments)  
  87.59.-e (X-ray imaging)  
  95.55.Ka (X- and γ-ray telescopes and instrumentation)  
Fund: Project supported by the Youth Talent Program of China National Nuclear Corporation, Natural Science Foundation of Inner Mongolia Autonomous Region, China (Grant No. 2025QN01029), University Basic Research Business Expense Project of Inner Mongolia Autonomous Region, China (Grant No. RZ2500000524), the Continuous-Support Basic Scientific Research Project (Grant No. BJ010261223282), the National Natural Science Foundation of China (Grant No. 11790321), and the Natural Science Foundation of Inner Mongolia Autonomous Region, China (Grant No. 2025QN01024).

Cite this article: 

Jin-Cheng Wang(王金成), Jie Ren(任杰), Wei Jiang(蒋伟), Suyalatu Zhang(张苏雅拉吐), Ping Cao(曹平), Xichao Ruan(阮锡超), Hao-Lan Yang(杨皓岚), Jie-Ming Xue(薛洁明), Ying-Yi Liu(刘颖一), Jie Bao(鲍杰), Guang-Yuan Luan(栾广源), Qi-Wei Zhang(张奇玮), Yi-Jia Qiu(邱奕嘉), Yong-Hao Chen(陈永浩), Rui-Rui Fan(樊瑞睿), Wei-Yu Wang(王维宇), Zhen-Yu Sun(孙振宇), De-Xin Wang(王德鑫), and Mei-Rong Huang(黄美容) A Compton imaging detection system for neutron resonance capture analysis at Back-n 2026 Chin. Phys. B 35 080703

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