1. SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.
2. Department of Mechanical Engineering, Stanford University , Stanford, CA 94305, USA.
3. Department of Chemistry, Stanford University, Stanford, CA 94305, USA.
4. Department of Physics and Astronomy, University of Nebraska–Lincoln, Lincoln, NE 68588, USA.
5. Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.
6. Department of Physics, Stanford University, Stanford, CA 94305, USA.
7. SIMES, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.