By Mark S. Hunter1, Brent W. Segelke2, Marc Messerschmidt3, Garth J. Williams, Nadia Zatsepin3, Anton Barty, W. Henry Benner, David B. Carlson, Matthew Coleman4, Alexander Graf, Stefan Hau-Riege2, Tommaso Pardini, M. Marvin Seibert, James Evans, Sébastien Boutet, Matthias Frank2
1. SLAC National Accelerator Laboratory 2. Lawrence Livermore National Laboratory 3. Arizona State University 4. Radiation Oncology, Cancer Center