Measurement of the neutron beam profile of the Back-n white neutron facility at CSNS with a Micromegas detector

The Back-n white neutron beam line, which uses back-streaming white neutrons from the spallation target of the China Spallation Neutron Source, is used for nuclear data measurements. A Micromegas-based neutron detector with two variants was specially developed to measure the beam spot distribution f...

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Veröffentlicht in:	arXiv.org 2020-01
Hauptverfasser:	Qi, Binbin, Yang, Li, Zhu, Danyang, Zhang, Zhiyong, Fan, Ruirui, Pan, Jiang, Feng, Jianxin, Liu, Chengming, Feng, Changqing, Liu, Jianbei, Shao, Ming, Zhou, Yi, Wang, Yanfeng, Han, Yi, An, Qi, Bai, Huaiyong, Bao, Jie, Cao, Ping, Chen, Qiping, Chen, Yonghao, Cheng, Pinjing, Cui, Zengqi, Gu, Minhao, Guo, Fengqin, Han, Changcai, Han, Zijie, He, Guozhu, He, Yongcheng, He, Yuefeng, Huang, Hanxiong, Huang, Weiling, Huang, Xiru, Ji, Xiaolu, Ji, Xuyang, Jiang, Haoyu, Jiang, Wei, Hantao Jing, Kang, Ling, Kang, Mingtao, Li, Bo, Li, Lun, Li, Qiang, Li, Xiao, Liu, Rong, Liu, Shubin, Liu, Xingyan, Luan, Guangyuan, Ma, Yinglin, Ning, Changjun, Ren, Jie, Ruan, Xichao, Song, Zhaohui, Sun, Hong, Sun, Xiaoyang, Sun, Zhijia, Tan, Zhixin, Tang, Hongqing, Tang, Jingyu, Wang, Pengcheng, Wang, Qi, Wang, Taofeng, Wang, Zhaohui, Wang, Zheng, Wen, Jie, Wen, Zhongwei, Wu, Qingbiao, Wu, Xiaoguang, Wu, Xuan, Xie, Likun, Yang, Yiwei, Li, Yu, Yu, Tao, Yu, Yongji, Zhang, Guohui, Zhang, Jing, Zhang, Linhao, Zhang, Liying, Zhang, Qingming, Zhang, Qiwei, Zhang, Xianpeng, Zhang, Yuliang, Zhao, Yingtan, Zhou, Liang, Zhou, Zuying, Zhu, Kejun, Zhu, Peng
Format:	Artikel
Sprache:	eng
Schlagworte:	Neutron beams Neutron counters Neutrons Performance tests Physics - High Energy Physics - Experiment Physics - Instrumentation and Detectors Sensors Spallation
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Beschreibung
Zusammenfassung:	The Back-n white neutron beam line, which uses back-streaming white neutrons from the spallation target of the China Spallation Neutron Source, is used for nuclear data measurements. A Micromegas-based neutron detector with two variants was specially developed to measure the beam spot distribution for this beam line. In this article, the design, fabrication, and characterization of the detector are described. The results of the detector performance tests are presented, which include the relative electron transparency, the gain and the gain uniformity, and the neutron beam profile reconstruction capability. The result of the first measurement of the Back-n neutron beam spot distribution is also presented.
ISSN:	2331-8422
DOI:	10.48550/arxiv.1908.02018