Crystal-based absolute photon energy calibration methods for hard x-ray free-electron lasers

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-05-16 DOI:10.1103/physrevaccelbeams.27.050701

Christian Grech, Marc Walter Guetg, Gianluca Aldo Geloni, Ulrike Boesenberg, Naresh Kujala, Mikako Makita, Svitozar Serkez

引用次数: 1

Abstract

Bragg diffraction from crystals is widely used to select a very narrow spectral range of x-ray pulses. The diffracted signal can be used to calibrate the photon energy, a fact that can be exploited very effectively at x-ray free-electron lasers (XFELs). This work describes three crystal-based methods used to this goal at a major x-ray FEL facility, the European XFEL. These methods, which have a wide applicability, have been developed in relation to the hard x-ray self-seeding setup installed at the SASE2 undulator. They are fast and straightforward to implement since they are based on techniques for extracting and identifying crystal reflections from standard diagnostic raw data while still delivering few electronvolts resolution. Published by the American Physical Society 2024

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基于晶体的硬 X 射线自由电子激光器绝对光子能量校准方法

晶体的布拉格衍射被广泛用于选择极窄光谱范围的 X 射线脉冲。衍射信号可用于校准光子能量，这在 X 射线自由电子激光器 (XFEL) 中可以得到非常有效的利用。本研究介绍了在大型 X 射线自由电子激光器设施--欧洲 XFEL 中用于实现这一目标的三种基于晶体的方法。这些方法具有广泛的适用性，是针对安装在 SASE2 起落架上的硬 X 射线自播种装置开发的。由于这些方法基于从标准诊断原始数据中提取和识别晶体反射的技术，同时还能提供几电子伏特的分辨率，因此实施起来既快又简单。美国物理学会出版 2024

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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.