Back-n white neutron source at CSNS and its applications

被引：66

作者：

Tang, Jing-Yu ^{[1
,5
,6
,9
]}

An, Qi ^{[2
,11
]}

Bai, Jiang-Bo ^{[3
]}

Bao, Jie ^{[4
]}

Bao, Yu ^{[5
,6
]}

Cao, Ping ^{[2
,11
]}

Chen, Hao-Lei ^{[2
,11
]}

Chen, Qi-Ping ^{[3
]}

Chen, Yong-Hao ^{[5
,6
]}

Chen, Zhen ^{[2
,11
]}

Cui, Zeng-Qi ^{[7
]}

Fan, Rui-Rui ^{[1
,5
,6
]}

Feng, Chang-Qing ^{[2
,11
]}

Gao, Ke-Qing ^{[5
,6
]}

Gao, Xiao-Long ^{[5
,6
]}

Gu, Min-Hao ^{[1
,5
]}

Han, Chang-Cai ^{[8
]}

Han, Zi-Jie ^{[3
]}

He, Guo-Zhu ^{[4
]}

He, Yong-Cheng ^{[5
,6
]}

Hong, Yang ^{[5
,6
,9
]}

Hu, Yi-Wei ^{[7
]}

Huang, Han-Xiong ^{[4
]}

Huang, Xi-Ru ^{[2
,11
]}

Jiang, Hao-Yu ^{[7
]}

Jiang, Wei ^{[5
,6
]}

Jiang, Zhi-Jie ^{[2
,11
]}

Jing, Han-Tao ^{[5
,6
]}

Kang, Ling ^{[5
,6
]}

Li, Bo ^{[5
,6
]}

Li, Chao ^{[2
,11
]}

Li, Jia-Wen ^{[10
,11
]}

Li, Qiang ^{[5
,6
]}

Li, Xiao ^{[5
,6
]}

Li, Yang ^{[5
,6
]}

Liu, Jie ^{[7
]}

Liu, Rong ^{[3
]}

Liu, Shu-Bin ^{[2
,11
]}

Liu, Xing-Yan ^{[3
]}

Long, Ze ^{[5
,6
]}

Luan, Guang-Yuan ^{[4
]}

Ning, Chang-Jun ^{[5
,6
]}

Niu, Meng-Chen ^{[5
,6
]}

Qi, Bin-Bin ^{[1
,2
,11
]}

Ren, Jie ^{[4
]}

Ren, Zhi-Zhou ^{[3
]}

Ruan, Xi-Chao ^{[4
]}

Song, Zhao-Hui ^{[8
]}

Sun, Kang ^{[5
,6
,9
]}

Sun, Zhi-Jia ^{[1
,5
,6
]}

机构：

[1] Chinese Acad Sci, Inst High Energy Phys, State Key Lab Particle Detect & Elect, Beijing 100049, Peoples R China

[2] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China

[3] China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Sichuan, Peoples R China

[4] China Inst Atom Energy, Key Lab Nucl Data, Beijing 102413, Peoples R China

[5] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

[6] Spallat Neutron Source Sci Ctr, Dongguan 523803, Peoples R China

[7] Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

[8] Northwest Inst Nucl Technol, Xian 710024, Peoples R China

[9] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[10] Univ Sci & Technol China, Dept Engn & Appl Phys, Hefei 230026, Peoples R China

[11] Univ Sci & Technol China, State Key Lab Particle Detect & Elect, Hefei 230026, Peoples R China

来源：

NUCLEAR SCIENCE AND TECHNIQUES | 2021年 / 32卷 / 01期

基金：

中国国家自然科学基金;

关键词：

White neutron source; Nuclear data measurements; Experimental setups; Neutron applications;

D O I：

10.1007/s41365-021-00846-6

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：

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 x 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-sectional measurements. This article presents an overview of the neutron beam characteristics, the experimental setups, and the ongoing applications at Back-n.

引用

页数：10

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