1. Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, D-22607 Hamburg, Germany
2. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Kashirskoe shosse 31, 115409 Moscow, Russia
3. European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
4. Center for Free-Electron Laser Science, DESY, Luruper Chaussee 149, D-22761 Hamburg, Germany
5. Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14850, USA