Single shot x-ray diffractometry in SACLA with pulsed magnetic fields up to 16 T

Single Shot Coherence Properties of the Free-Electron Laser SACLA in the Hard X-ray Regime

We measured the coherence properties of the free-electron laser SACLA on a single shot basis at an X-ray energy of 8 keV. By analysing small-angle X-ray scattering speckle patterns from colloidal dispersions we found a degree of transverse coherence of βt = 0.79 ± 0.09. Taking detector properties into account, we developed a simulation model in oder to determine the degree of coherence from int...

Sequential Single Shot X-ray Photon Correlation Spectroscopy at the SACLA Free Electron Laser.

Hard X-ray free electron lasers allow for the first time to access dynamics of condensed matter samples ranging from femtoseconds to several hundred seconds. In particular, the exceptional large transverse coherence of the X-ray pulses and the high time-averaged flux promises to reach time and length scales that have not been accessible up to now with storage ring based sources. However, due to...

Single-shot arrival timing diagnostics for a soft X-ray free-electron laser beamline at SACLA.

Arrival timing diagnostics performed at a soft X-ray free-electron laser (FEL) beamline of SACLA are described. Intense soft X-ray FEL pulses with one-dimensional focusing efficiently induce transient changes of optical reflectivity on the surface of GaAs. The arrival timing between soft X-ray FEL and optical laser pulses was successfully measured as a spatial position of the reflectivity chang...

Ultrafast Single Shot X-Ray Imaging of Magnetic Phase Transitions

We propose an experiment that makes full use of the unique capabilities offered by LCLS to image the critical fluctuations in a ferromagnetic film in the vicinity of its Curie temperature. The high intensity, femtosecond time structure, and coherence of the LCLS x-ray pulses will enable us to record ultrafast consecutive images of critical fluctuations using a newly developed lensless imaging t...

ERRATUM: Single Shot Coherence Properties of the Free-Electron Laser SACLA in the Hard X-ray Regime