CPHS掠入射聚焦小角度中子散射（gif-SANS）仪器的概念设计

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-09-07 DOI:10.3233/jnr-210008

Huarui Wu, Weihang Hong, Yao Zhang, P. Bai, Wenbo Mo, Yigang Yang, H. Gong, Zhong Zhang, Xiufeng Xu, W. Cai, Ping Wang, Zhe Wang, Xuewu Wang

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引用次数: 1

摘要

在紧凑型加速器驱动中子源（CANS）上开发小角度中子散射技术对于扩大用户群体和提高CANS能力具有重要意义。在清华大学的紧凑型脉冲强子源（CPHS），中子聚焦镜正在进行深入研究，以应对这一挑战。一个关注放牧发生率的SANS（gif SANS）项目已初始化。它采用了一个具有大收集面积的嵌套超反射镜组件，以在Q min⩽0.007Å−1时实现⩾10 5 n/s中子强度。它将配备两个探测器，一个是用于正常Q范围测量的3He探测器，另一个是高分辨率探测器，用于将Q min延长至10−3Å−1。在这项工作中，我们介绍了在CPHS的gif SANS的概念设计。这样的方案有利于在CANS上实现高性能SANS测量。

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Conceptual design of the grazing-incidence focusing small-angle neutron scattering (gif-SANS) instrument at CPHS

Developing small-angle neutron scattering techniques at compact accelerator-driven neutron sources (CANS) is of great importance for expanding the user community and advancing CANS capability. At the Compact Pulsed Hadron Source (CPHS) at Tsinghua University, neutron-focusing mirrors are under intensive research to address the challenge. A grazing-incidence focusing SANS (gif-SANS) project is initialized. It employs a nested supermirror assembly with a large collecting area to achieve ⩾ 10 5 n/s neutron intensity at Q min ⩽ 0.007 Å − 1 . It will equip two detectors, one being a 3He detector for normal Q-range measurements, and the other being a high-resolution detector for extending the Q min down to 10 − 3 Å − 1 . In this work, we present the conceptual design of the gif-SANS at CPHS. Such a scheme is conducive to enable high-performance SANS measurements at CANS.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.