Fast X-ray imaging beamline at SSRF

IF 3.6 1区 物理与天体物理 Q1 NUCLEAR SCIENCE & TECHNOLOGY Nuclear Science and Techniques Pub Date : 2024-08-30 DOI:10.1007/s41365-024-01488-0
Ke Li, Hong-Lan Xie, Ya-Nan Fu, Fei-Xiang Wang, Guo-Hao Du, Jian-Feng ji, Biao Deng, Ti-Qiao Xiao
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Abstract

The fast X-ray imaging beamline (BL16U2) at Shanghai Synchrotron Radiation Facility (SSRF) is a new beamline that provides X-ray micro-imaging capabilities across a wide range of time scales, spanning from 100 ps to μs and ms. This beamline has been specifically designed to facilitate the investigation of a wide range of rapid phenomena, such as the deformation and failure of materials subjected to intense dynamic loads. In addition, it enables the study of high-pressure and high-speed fuel spray processes in automotive engines. The light source of this beamline is a cryogenic permanent magnet undulator (CPMU) that is cooled by liquid nitrogen. This CPMU can generate X-ray photons within an energy range of 8.7–30 keV. The beamline offers two modes of operation: monochromatic beam mode with a liquid nitrogen-cooled double-crystal monochromator (DCM) and pink beam mode with the first crystal of the DCM out of the beam path. Four X-ray imaging methods were implemented in BL16U2: single-pulse ultrafast X-ray imaging, microsecond-resolved X-ray dynamic imaging, millisecond-resolved X-ray dynamic micro-CT, and high-resolution quantitative micro-CT. Furthermore, BL16U2 is equipped with various in situ impact loading systems, such as a split Hopkinson bar system, light gas gun, and fuel spray chamber. Following the completion of the final commissioning in 2021 and subsequent trial operations in 2022, the beamline has been officially available to users from 2023.

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SSRF 快速 X 射线成像光束线
上海同步辐射设施(SSRF)的快速X射线成像光束线(BL16U2)是一条新型光束线,可提供从100 ps到μs和ms等多种时间尺度的X射线微成像功能。该光束线专为研究各种快速现象而设计,如材料在强动态载荷作用下的变形和失效。此外,它还可以研究汽车发动机中的高压和高速燃料喷射过程。该光束线的光源是由液氮冷却的低温永磁起爆器(CPMU)。CPMU 可以产生能量范围为 8.7-30 keV 的 X 射线光子。该光束线提供两种运行模式:使用液氮冷却的双晶单色器(DCM)的单色光束模式和使用 DCM 的第一个晶体离开光束路径的粉色光束模式。BL16U2 采用了四种 X 射线成像方法:单脉冲超快 X 射线成像、微秒分辨 X 射线动态成像、毫秒分辨 X 射线动态显微 CT 和高分辨率定量显微 CT。此外,BL16U2 还配备了各种原位冲击装载系统,如分体式霍普金森棒系统、光气枪和燃料喷射室。在 2021 年完成最终调试和随后的 2022 年试运行之后,该光束线从 2023 年起正式向用户开放。
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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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