Jan Grünert

TL;DR: The European XFEL as discussed by the authors is a hard X-ray free-electron laser (FEL) based on a highelectron-energy superconducting linear accelerator, which allows for the acceleration of many electron bunches within one radio-frequency pulse of the accelerating voltage and, in turn, for the generation of a large number of hard Xray pulses.

TL;DR: The European XFEL as discussed by the authors is a free-electron laser (FEL) user facility providing soft and hard X-ray FEL radiation to initially six scientific instruments.

TL;DR: In this article, the time-energy information of ultrashort X-ray free-electron laser pulses generated by the Linac Coherent Light Source is measured with attosecond resolution via angular streaking of neon 1s photoelectrons.

TL;DR: In this paper, a two-colour X-ray pump-X-ray probe operating mode for the Linac Coherent Light Source (LCLS) has been demonstrated, where pointing, timing, intensity and wavelength of the two pulses can be modified.

TL;DR: This work demonstrates the first nanofocusing of hard XFEL pulses, and develops diamond based Fresnel zone plates capable of withstanding the full beam of the world's most powerful x-ray laser.