By Matthias Frank1, David B. Carlson, Mark S. Hunter2, Garth J. Williams, Marc Messerschmidt3, Nadia Zatsepin3, Anton Barty, W. Henry Benner, Kaiqin Chu, Alexander T. Graf, Stefan Hau-Riege1, Richard Kirian4, Celestino Padeste, Tommaso Pardini, Bill Pedrini, Brent W. Segelke1, M. Marvin Seibert, John Spence3, Ching-Ju Tsai, Stephen M. Lane, Xiao-Dan Li, Gebhard F.X. Schertler5, Sebastien Boutet, Matthew Coleman6, James E. Evans
1. Lawrence Livermore National Laboratory 2. SLAC National Accelerator Laboratory 3. Arizona State University 4. Center for Free-Electron Laser Science 5. ETH Zürich / Paul Scherrer Institut, Villigen Switzerland 6. Radiation Oncology, Cancer Center
