1. Beijing Synchrotron Radiation Facility X‐ray Optics and Technology Laboratory Institute of High Energy Physics Chinese Academy of Sciences Yuquan Road, Shijingshan District Beijing 100043 China
2. University of Chinese Academy of Sciences Yuquan Road, Shijingshan District Beijing 100043 China
3. European Synchrotron Radiation Facility 38000 Grenoble France
4. Stanford Synchrotron Radiation Lightsource SLAC National Accelerator Laboratory Menlo Park CA 94025 USA