1. Department of Physics, Stanford University, Stanford, California 94305, USA
2. Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
3. SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
4. Department of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, USA
5. LCLS, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
6. Department of Physics, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
7. SSRL, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA