Science with High Repetition Rate FELs: Status and Outlook - CANCELED

A new generation of x-ray free-electron laser sources is opening a new chapter in the investigation of matter. After the early experience with the first free-electron laser powered by a superconducting linear accelerator, the FLASH facility at DESY, the experimental activity at the European XFEL started in late 2017 and the completion of the LCLS II and of the SHINE facility in China are coming soon. Based on specific examples of early science at the European XFEL in a variety of disciplines, the exciting possibilities opened up by these new facilities, producing from several thousands to nearly a million fs-duration x-ray pulses per second are presented, together with some of the challenges that must be met to maximise their scientific impact. Directions of future source developments such as improving pulse-to-pulse stability and reproducibility, longitudinal coherence properties, and the pursuit of the complementary attosecond and high-monochromaticity frontiers are briefly discussed.

Speaker: Massimo Altarelli, Max Planck Institute