Analytical model for monochromator performance characterizations under thermal load
Abstract
Non-uniform thermal load causes performance degradation of crystal X-ray optics. With the development of high-brightness X-ray free-electron lasers, the thermal load on X-ray optics becomes even more severe. To mitigate the thermal load, a quantitative understanding of thermal effects on the optical performance is necessary. We derived an analytical model for monochromator performance under a non-uniform thermal load. This analytical model quantitatively describes the distortion of the rocking curve and attributes different contributions to different factors of thermal load. It provides not only monochromator design insights and considerations, but also a quick estimation of the rocking curve distortion due to thermal load for practical situations such as pump-probe experiments.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 24, 2020
- Source ID
- 10.1364/oe.394958
Entities
People
- Guanqun Zhou
- Juhao Wu
- Yanbao Ma
- Zhengxian Qu
Organizations
- Air Force Office of Scientific Research
- National Science Foundation
- Office of Science
- United States Department of Energy