Back-n white neutron source at CSNS and its applications
Back-n white neutron source at CSNS and its applications
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DOI：
10.1007/s41365-021-00846-6
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发表时间：
2021-01
影响因子：
2.8
通讯作者：
Jing-Yu Tang;Q. An;Jiangbo Bai;J. Bao;Yu Bao;P. Cao;Haolei Chen;Qiping Chen;Yonghao Chen;Zhen Chen;Z. Cui;R. Fan;C. Feng;K. Gao;Xiaolong Gao;M. Gu;Changcai Han;Z. Han;G. He;Yongcheng He;Yang Hong;Yi-Wei Hu;Hanxiong Huang;Xiru Huang;Haoyu Jiang;Wei Jiang;Zhi Jiang;H. Jing;L. Kang;Bo-Zhang Li;Chao Li;Jiawen Li;Qiang Li;Xiao Li;Yang Li;Jie Liu;Rong Liu;Shu-Bin Liu;Xingyan Liu;Z. Long;G. Luan;C. Ning;M. Niu;Binbin Qi;Jie Ren;Z. Ren;X. Ruan;Zhaohui Song;K. Sun;Zhi-jia Sun;Z. Tan;Xinyi Tang;B. Tian;Lijiao Wang;Pengcheng Wang;Zhaohui Wang;Z. Wen;Xiao-guang Wu;Xuan Wu;L. Xie;Xiaoyun Yang;Yiwei Yang;H. Yi;Li Yu;T. Yu;Yong Yu;Guo-Hui Zhang;Linhao Zhang;Qi-wei Zhang;Xian-Peng Zhang;Yuliang Zhang;Zhiyong Zhang;Luping Zhou;Zhihao Zhou;K. Zhu
中科院分区：
文献类型：
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作者：
Jing-Yu Tang;Q. An;Jiangbo Bai;J. Bao;Yu Bao;P. Cao;Haolei Chen;Qiping Chen;Yonghao Chen;Zhen Chen;Z. Cui;R. Fan;C. Feng;K. Gao;Xiaolong Gao;M. Gu;Changcai Han;Z. Han;G. He;Yongcheng He;Yang Hong;Yi-Wei Hu;Hanxiong Huang;Xiru Huang;Haoyu Jiang;Wei Jiang;Zhi Jiang;H. Jing;L. Kang;Bo-Zhang Li;Chao Li;Jiawen Li;Qiang Li;Xiao Li;Yang Li;Jie Liu;Rong Liu;Shu-Bin Liu;Xingyan Liu;Z. Long;G. Luan;C. Ning;M. Niu;Binbin Qi;Jie Ren;Z. Ren;X. Ruan;Zhaohui Song;K. Sun;Zhi-jia Sun;Z. Tan;Xinyi Tang;B. Tian;Lijiao Wang;Pengcheng Wang;Zhaohui Wang;Z. Wen;Xiao-guang Wu;Xuan Wu;L. Xie;Xiaoyun Yang;Yiwei Yang;H. Yi;Li Yu;T. Yu;Yong Yu;Guo-Hui Zhang;Linhao Zhang;Qi-wei Zhang;Xian-Peng Zhang;Yuliang Zhang;Zhiyong Zhang;Luping Zhou;Zhihao Zhou;K. Zhu
利用中国空间中子源（CSNS）的空间靶通过入射质子通道发射的回流中子建造了一个白色中子束设施（所谓的Back-n白色中子源），该设施于2018年3月完工。Back-n中子束非常强烈，在距离靶55米处约为2 × 107 n/cm 2/s，并且具有标称质子束，在CSNS-I阶段的功率为100 kW，动能为1.6 GeV，并且具有多个切片的厚钨靶，通过切片的冷却水进行适度减速。此外，从0.5 eV到200 MeV的优异能谱和与飞行时间测量相关的良好时间分辨率使其成为用于核数据测量的典型白色中子源;其总体性能是世界上最好的白色中子源之一。配备先进的光谱仪，探测器和应用程序，Back-n设施可以服务于广泛的应用，重点是中子诱导截面测量。本文概述了中子束的特性，实验装置，并正在进行的应用在背n。
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 × 107n/cm2/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-sectional measurements. This article presents an overview of the neutron beam characteristics, the experimental setups, and the ongoing applications at Back-n.