We report latest advancements in achieving drift-free, single-digit femtosecond synchronisation at the free-electron laser (FEL) facilities European XFEL and FLASH. Achieving this level of facility-wide stabilisation, and ultimately enabling femtosecond temporal resolution in user experiments at the scientific instruments necessitates not only tight synchronisation of optical lasers (e.g.,...
We report here on the new scientific possibilities that have recently been opened up from new accelerator physics developments - the operation of a synchrotron radiation source in a so-called TRIBs mode [1]. Here, the electron beam moves on a different closed orbit in the storage ring, which only closes after several (e.g. 3) turns, but the electrons run on different paths through the storage...
Hard X-ray free-electron lasers (XFELs) have been a powerful tool for investigating ultrafast dynamics for more than ten years, with ever-improving capabilities in measuring on faster and faster timescales. The unique combination of Angstrom wavelengths and sub-100 fs pulse durations has proven especially important for probing the interplay between electronic and structural dynamics in a broad...
A real-time measurement method by soft X-ray absorption spectroscopy (XAS) was developed to observe the chemical reaction under operando condition [1]. In addition, a dedicated cell for the method was prepared for real-time observation of the chemical reaction at the solid-liquid interface of the (photo)electrode for the oxygen evolution reaction (OER) of water electrolysis. Hydrogen...
The international luminescence community is in an excellent situation concerning the experimental conditions for research of wide gap materials under VUV excitation. The FinEstBeAMS beamline at MAX IV equipped with a moveable luminescence end-station is in operation since 2019 [1]. The luminescence end-station of the P66 beamline at PETRA III has in permanent user operation since 2022....
Recent advances in high-intensity ultrafast X-ray sources enable a new era of time-resolved pump-probe experiments, revealing hitherto inaccessible information about the interactions of photons with surfaces and the electronic dynamics they induce. Femtosecond time-resolved laser-assisted photoemission (tr-LAPE) provides a deeper understanding of the very foundations of the surface...
