Back-n White Neutron Source at CSNS and its Applications
Abstract
Back-streaming neutrons from the spallation target of the China Spallation Neutron Source (CSNS) that emit through the incoming proton channel were exploited to build a white neutron beam facility (the so-called Back-n white neutron source), which was completed in March 2018. The Back-n neutron beam is very intense, at approximately 2*10^7 n/cm^2/s at 55 m from the target, and has a nominal proton beam with a power of 100 kW in the CSNS-I phase and a kinetic energy of 1.6 GeV and a thick tungsten target in multiple slices with modest moderation from the cooling water through the slices. In addition, the excellent energy spectrum spanning from 0.5 eV to 200 MeV, and a good time resolution related to the time-of-flight measurements make it a typical white neutron source for nuclear data measurements; its overall performance is among that of the best white neutron sources in the world. Equipped with advanced spectrometers, detectors, and application utilities, the Back-n facility can serve wide applications, with a focus on neutron-induced cross-section measurements. This article presents an overview of the neutron beam characteristics, the experimental setups, and the ongoing applications at Back-n.
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Cite
@article{arxiv.2101.06567,
title = {Back-n White Neutron Source at CSNS and its Applications},
author = {n Collaboration and Jing-Yu Tang and Qi An and Jiang-Bo Bai and Jie Bao and Yu Bao and Ping Cao and Hao-Lei Chen and Qi-Ping Chen and Yong-Hao Chen and Zhen Chen and Zeng-Qi Cui and Rui-Rui Fan and Chang-Qing Feng and Ke-Qing Gao and Xiao-Long Gao and Min-Hao Gu and Chang-Cai Han and Zi-Jie Han and Guo-Zhu He and Yong-Cheng He and Yang Hong and Yi-Wei Hu and Han-Xiong Huang and Xi-Ru Huang and Hao-Yu Jiang and Wei Jiang and Zhi-Jie Jiang and Han-Tao Jing and Ling Kang and Bo Li and Chao Li and Jia-Wen Li and Qiang Li and Xiao Li and Yang Li and Jie Liu and Rong Liu and Shu-Bin Liu and Xing-Yan Liu and Ze Long and Guang-Yuan Luan and Chang-Jun Ning and Meng-Chen Niu and Bin-Bin Qi and Jie Ren and Zhi-Zhou Ren and Xi-Chao Ruan and Zhao-Hui Song and Kang Sun and Zhi-Jia Sun and Zhi-Xin Tan and Xin-Yi Tang and Bin-Bin Tian and Li-Jiao Wang and Peng-Cheng Wang and Zhao-Hui Wang and Zhong-Wei Wen and Xiao-Guang Wu and Xuan Wu and Li-Kun Xie and Xiao-Yun Yang and Yi-Wei Yang and Han Yi and Li Yu and Tao Yu and Yong-Ji Yu and Guo-Hui Zhang and Lin-Hao Zhang and Qi-Wei Zhang and Xian-Peng Zhang and Yu-Liang Zhang and Zhi-Yong Zhang and Lu-Ping Zhou and Zhi-Hao Zhou and Ke-Jun Zhu},
journal= {arXiv preprint arXiv:2101.06567},
year = {2021}
}
Comments
11 pages, 9 figures