Ultrahard X-ray multifunctional application beamline at the SSRF

IF 3.6 1区 物理与天体物理 Q1 NUCLEAR SCIENCE & TECHNOLOGY
Ke Yang, Zhao-Hui Dong, Chun-Yin Zhou, Zi-Long Zhao, Dong-Xu Liang, Sai-Chao Cao, Ai-Guo Li
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Abstract

The ultrahard X-ray multifunctional application beamline (BL12SW) is a phase-II beamline project at the Shanghai Synchrotron Radiation Facility. The primary X-ray techniques used at the beamline are high-energy X-ray diffraction and imaging using white and monochromatic light. The main scientific objectives of ultrahard X-ray beamlines are focused on two research areas. One is the study of the structural properties of Earth’s interior and new materials under extreme high-temperature and high-pressure conditions, and the other is the characterization of materials and processes in near-real service environments. The beamline utilizes a superconducting wiggler as the light source, with two diamond windows and SiC discs to filter out low-energy light (primarily below 30 keV) and a Cu filter assembly to control the thermal load entering the subsequent optical components. The beamline is equipped with dual monochromators. The first was a meridional bending Laue monochromator cooled by liquid nitrogen, achieving a full-energy coverage of 30–162 keV. The second was a sagittal bending Laue monochromator installed in an external building, providing a focused beam in the horizontal direction with an energy range of 60–120 keV. There were four experimental hutches: two large-volume press experimental hutches (LVP1 and LVP2) and two engineering material experimental hutches (ENG1 and ENG2). Each hutch was equipped with various near-real service conditions to satisfy different requirements. For example, LVP1 and LVP2 were equipped with a 200-ton DDIA press and a 2000-ton dual-mode (DDIA and Kawai) press, respectively. ENG1 and ENG2 provide in situ tensile, creep, and fatigue tests as well as high-temperature conditions. Since June 2023, the BL12SW has been in trial operation. It is expected to officially open to users by early 2024.

Abstract Image

SSRF 的超硬 X 射线多功能应用光束线
超硬 X 射线多功能应用光束线(BL12SW)是上海同步辐射设施的二期光束线项目。该光束线使用的主要 X 射线技术是高能 X 射线衍射和利用白光和单色光成像。超硬 X 射线光束线的主要科学目标集中在两个研究领域。一个是研究地球内部和新材料在极端高温高压条件下的结构特性,另一个是近乎真实服务环境下的材料和过程特征。该光束线采用超导摇摆器作为光源,两个金刚石窗口和碳化硅圆盘可滤除低能光(主要是 30 keV 以下),铜滤波器组件可控制进入后续光学组件的热负荷。光束线配备了双单色仪。第一台是由液氮冷却的经向弯曲 Laue 单色仪,实现了 30-162 keV 的全能量覆盖。第二台是安装在外部建筑中的矢状弯曲 Laue 单色仪,提供水平方向的聚焦光束,能量范围为 60-120 千伏。共有四个实验箱:两个大容量压机实验箱(LVP1 和 LVP2)和两个工程材料实验箱(ENG1 和 ENG2)。每个实验箱都配备了各种接近真实的服务条件,以满足不同的要求。例如,LVP1 和 LVP2 分别配备了 200 吨 DDIA 压力机和 2000 吨双模式(DDIA 和 Kawai)压力机。ENG1 和 ENG2 提供原位拉伸、蠕变和疲劳测试以及高温条件。自 2023 年 6 月起,BL12SW 开始试运行。预计将于 2024 年初正式向用户开放。
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来源期刊
Nuclear Science and Techniques
Nuclear Science and Techniques 物理-核科学技术
CiteScore
5.10
自引率
39.30%
发文量
141
审稿时长
5 months
期刊介绍: Nuclear Science and Techniques (NST) reports scientific findings, technical advances and important results in the fields of nuclear science and techniques. The aim of this periodical is to stimulate cross-fertilization of knowledge among scientists and engineers working in the fields of nuclear research. Scope covers the following subjects: • Synchrotron radiation applications, beamline technology; • Accelerator, ray technology and applications; • Nuclear chemistry, radiochemistry, radiopharmaceuticals, nuclear medicine; • Nuclear electronics and instrumentation; • Nuclear physics and interdisciplinary research; • Nuclear energy science and engineering.
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