By N. Duane Loh, Dmitri Starodub, Lukas Lomb, Christina Y. Hampton, Andrew V. Martin, Raymond G. Sierra, Anton Barty, Andrew Aquila, Joachim Schulz, Jan Steinbrener, Robert L. Shoeman, Stephan Kassemeyer, Christoph Bostedt, John Bozek, Sascha W. Epp, Benjamin Erk, Robert Hartmann, Daniel Rolles, Artem Rudenko, Benedikt Rudek, Lutz Foucar, Nils Kimmel, Georg Weidenspointner, Guenter Hauser, Peter Holl, Emanuele Pedersoli, Mengning Liang, Mark S. Hunter1, Lars Gumprecht, Nicola Coppola, Cornelia Wunderer, Heinz Graafsma, Filipe R.N.C. Maia, Tomas Ekeberg, Max Hantke, Holger Fleckenstein, Helmut Hirsemann, Karol Nass, Thomas A. White, Herbert J. Tobias, George R. Farquar, W. Henry Benner, Stefan Hau-Riege2, Christian Reich, Andreas Hartmann, Heike Soltau, Stefano Marchesini, Sasa Bajt, Miriam Barthelmess, Lothar Strueder, Joachim Ullrich, Philip Bucksbaum, Matthias Frank2, Ilme Schlichting, Henry Chapman3, Michael J. Bogan
1. SLAC National Accelerator Laboratory 2. Lawrence Livermore National Laboratory 3. Center for Free-Electron Laser Science
