1. Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545, United States
2. Advanced Research Institute of Multidisciplinary Sciences, Beijing Institute of Technology, Beijing 100081, China
3. Nagoya University Synchrotron Radiation Research Center (NUSR), Furo, Chikusa, Nagoya, Aichi 464-8601, Japan
4. Photonis Defense Inc., 1000 New Holland Avenue, Lancaster, Pennsylvania 17601, United States
5. Accelerator Division 6, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan