BRIGHT:the three-dimensional X-ray crystal Bragg diffraction code

被引：1
|
作者：
Nan-Shun Huang [1 ,2 ]
Kai Li [1 ,3 ]
Hai-Xiao Deng [1 ]
机构：
[1] Shanghai Institute of Applied Physics, Chinese Academy of Sciences
[2] University of Chinese Academy of Sciences
[3] Department of Physics, The University of Chicago
来源：
NuclearScienceandTechniques | 2019年 / 30卷 / 03期
基金：
中国国家自然科学基金;
关键词：
X-ray; Bragg diffraction; Self-seeding; XFELO;
D O I：
暂无
中图分类号：
O721 [晶体对Ｘ射线、电子和中子的衍射理论];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
In pursuit of a fully coherent X-ray free-electron laser(FEL), highly reflective Bragg crystals are used and will be used as a highly selective spectral filter in hard X-ray self-seeding FELs and X-ray FEL oscillators(XFELO), respectively. However, currently, when simulating self-seeding and XFELO, the three-dimensional effect of Bragg diffraction is not fully considered. In this paper, we derive a comprehensive solution for the response function of the crystal in Bragg diffraction. A three-dimensional X-ray crystal Bragg diffraction code, named BRIGHT, is introduced, which can be combined with other FEL-related codes, e.g., GENESIS and OPC. Performance and feasibility are assessed using two numerical examples,namely a self-seeding experiment for the linac coherent light source and XFELO options for Shanghai high repetition rate XFEL. The results indicate that BRIGHT provides a new and useful tool for three-dimensional modeling of FEL.
引用
收藏
页码：3 / 11
页数：9
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