Numerical Modeling on Thermal Loading of Diamond Crystal in X-ray FEL Oscillator
Abstract
Due to high reflectivity and high resolution of X-ray pulses, diamond is one of the most popular Bragg crystals serving as the reflecting mirror and monochromator in the next generation of free electrons lasers (FELs). The energy deposition of X-rays will result in thermal heating, and thus lattice expansion of the diamond crystal, which may degrade the performance of X-ray FELs. In this paper, the thermal loading effect of diamond crystal for X-ray FEL oscillators has been systematically studied by combined simulation with Geant4 and ANSYS, and its dependence on the environmental temperature, crystal size, X-ray pulse repetition rate and pulse energy are presented. Our results show that taking the thermal loading effects into account, X-ray FEL oscillators are still robust and promising with an optimized design.
Keywords
Cite
@article{arxiv.1510.04338,
title = {Numerical Modeling on Thermal Loading of Diamond Crystal in X-ray FEL Oscillator},
author = {Meiqi Song and Qingmin Zhang and Yuhang Guo and Kai Li and Haixiao Deng},
journal= {arXiv preprint arXiv:1510.04338},
year = {2016}
}
Comments
6 pages, 9 figures, 1 tables, To be published in Chinese Physics C