1. Freie Universität Berlin, Fachbereich Physik, Arnimallee 14, 14195 Berlin, Germany.
2. Elettra-Sincrotrone Trieste S.C.p.A., Strada Statale 14 - km 163.5 in AREA Science Park, 34149 Basovizza, Trieste, Italy.
3. European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany.
4. Institute of Experimental Physics, TU Bergakademie Freiberg, Leipziger Str. 23, 09599 Freiberg, Germany.
5. Rutherford Appleton Laboratory, Didcot OX11 0QX, UK.