Numerical Modeling on Thermal Loading of Diamond Crystal in X-ray FEL Oscillator
arXiv:1510.04338 · doi:10.1088/1674-1137/40/4/048101
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.
6 pages, 9 figures, 1 tables, To be published in Chinese Physics C
Cited by in corpus (5)
- Systematical design and three-dimensional simulation of X-ray FEL oscillator for Shanghai Coherent Light Facility
- High brightness fully coherent X-ray amplifier seeded by a free-electron laser oscillator
- Gain-guided X-ray free-electron laser oscillator
- Proposals for gain cascading in single-pass of a free-electron laser oscillator
- Thermal loading on crystals in an X-ray free-electron laser oscillator