The time-of-flight Small-Angle Neutron Spectrometer at China Spallation Neutron Source
The time-of-flight Small-Angle Neutron Spectrometer at China Spallation Neutron Source
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DOI：
10.1080/10448632.2018.1514197
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发表时间：
2018-04
期刊：
影响因子：
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通讯作者：
Y. Ke;Chunyong He;Hai Zheng;Y. Geng;J. Fu;Shengkai Zhang;Haitao Hu;Songlin Wang;Bin Zhou;Fangwei Wang;J. Tao
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文献类型：
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作者：
Y. Ke;Chunyong He;Hai Zheng;Y. Geng;J. Fu;Shengkai Zhang;Haitao Hu;Songlin Wang;Bin Zhou;Fangwei Wang;J. Tao
中国对先进加速器驱动中子源的设想始于20世纪90年代末，随后中国散裂中子源（CSNS）于2011年在东莞破土动工，并于2017年8月28日获得了第一批中子。我们报告了我们在三个第一天的仪器之一，CSNS的小角中子星（SANS@ CSNS）上的工作。最新和初步的热调试结果令人鼓舞，我们开始探索科学机会并培养用户社区。SANS@CSNS是国内第一台脉冲源、通用、飞行时间SANS仪器。它利用CSNS目标站的1号光束口面对耦合液氢慢化剂，采用短直光束线配置，具有经典的点聚焦针孔相机几何形状。与弯曲中子导结构相比，该设计可以在短波长[1]处获得更好的中子透射率，并且在实验测量中可以实现更宽的Q范围。8月28日，中国散裂中子源飞行时间小角中子星首次观测到中子
The vision for an advanced accelerator-driven neutron source in China started in the late 1990s, followed by the China Spallation Neutron Source (CSNS) breaking ground in Dongguang in 2011 and obtaining its first neutrons on August 28, 2017. We report our work on one of the three day-one instruments, the Small-Angle Neutron Spectrometer (SANS) at CSNS (SANS@ CSNS). The latest and preliminary hot-commissioning results are encouraging, and we are beginning to explore scientific opportunities as well as cultivate the user community. Introduction The SANS@CSNS is the first pulsed-source, generalpurpose, time-of-flight SANS instrument in China. It utilizes beam port #1 of the CSNS target station facing a coupled liquid hydrogen moderator and adopts a short straight beamline configuration with the classic pointfocusing pin-hole camera geometry. Compared with the curved neutron guide configuration, this design can obtain a better neutron transmission at short wavelength [1] and enable a wide Q range during experimental measurements. The first neutrons were observed in on August 28, The time-of-flight Small-Angle Neutron Spectrometer at China Spallation Neutron Source