Hard X-Ray Bent Crystal Spectrometer with High Energy Resolution

被引：0
|
作者：
Yang Z. [1 ,2 ,4 ]
Li B. [1 ,2 ,3 ,4 ]
机构：
[1] Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai
[2] Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai
[3] School of Physical Science and Technology, Shanghai Tech University, Shanghai
[4] University of Chinese Academy of Sciences, Beijing
来源：
Guangxue Xuebao/Acta Optica Sinica | 2022年 / 42卷 / 11期
关键词：
Hard X-ray free electron laser; Single shot online measurement; Spectrometer; Strongly bent cylindrical crystals; X-ray optics;
D O I：
10.3788/AOS202242.1134018
中图分类号：
学科分类号：
摘要：
Based on design algorithms of hard X-ray spectrometers in advanced light sources around the world, high energy resolution is realized by adopting cylindrically bent Bragg crystals. A new structure of a double diffraction spectrometer is proposed, which can achieve 2×105 energy resolution of single pulse in the photon energy range of 325 keV. The energy resolution performance of the spectrometer is verified by theoretical analysis and numerical calculation. And a broad spectrum with bandwidth beyond 1% can be reconstructed via mechanical scan. This technique can potentially be used to measure the fine structure in self-amplified spontaneous emission (SASE) spectra within hard X-ray spectral range for Shanghai High Repetition Rate hard X-ray free electron laser (XFEL) and Extreme Light Facility (SHINE), and it can be applied to detection and application of the cutting edge user scientific researches demanding high resolving power, preserving important merit of value in science and technology. © 2022, Chinese Lasers Press. All right reserved.
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