X-ray Free Electron Lasers (XFELs) are revolutionizing various scientific domains, including high-energy-density science, thanks to their unparalleled brilliance, ultra-short pulse durations, and high spatial coherence. These features enable unprecedented observations and experiments. The XFEL facility SACLA [1] hosts an experimental platform combining an optical laser with an XFEL for laser dynamic compression experiments applicable to high-pressure science. 
The platform [2] features a nanosecond long-pulse laser that delivers laser pulses with pulse energies exceeding 15 J. It is designed for investigating matter under high-pressure conditions [3, 4] and hydrodynamic phenomena [5] by utilizing X-ray diffraction and imaging techniques. 
In this presentation, I will share the capabilities of the platform and highlight recent experimental achievements related to high-pressure science.

[1] T. Ishikawa et al., “A compact X-ray free-electron laser emitting in the sub-ångström region”, Nat. Photon. 6, 540 (2012).
[2] Y. Inubushi et al., “Development of an Experimental Platform for Combinative Use of an XFEL and a High-Power Nanosecond Laser”, Appl. Sci. 10, 2224 (2020).
[3] T. Okuchi et al., “Ultrafast olivine-ringwoodite transformation during shock compression”, Nat. Comm. 12, 4305 (2021).
[4] D. Kraus et al., "Indirect evidence for elemental hydrogen in laser-compressed hydrocarbons", Phys. Rev. Res., 5(2), L022023 (2023).
[5] G. Rigon et al., “Micron-scale phenomena observed in a turbulent laser-produced plasma”, Nat. Comm. 12, 2679 (2021).
 

X-Ray Free Electron Laser;,Dynamic compression,High-pressure science