MS20-P08 EuPRAXIA – a compact, cost-efficient XFEL source Maria Weikum (Accelerator R&D, Deutsches Elektronensynchrotron (DESY), Hamburg, Germany) Paul Andreas Walker (Accelerator R&D, Deutsches Elektronensynchrotron (DESY), Hamburg, Germany) Ralph Assmann (Accelerator R&D, Deutsches Elektronensynchrotron (DESY), Hamburg, Germany)email: behalf of the EuPRAXIA collaboration)

One of the main limitations for crystallographic studies – whether it be in structural biology, chemical analysis or material science – is the availability of suitable diagnostic instruments which are to-date typically found in the form of large accelerator-based facilities, such as Free-Electron Lasers (FELs), synchrotron storage rings or accelerator-based neutron sources.
With the Horizon 2020 project EuPRAXIA (“European Plasma Research Accelerator with eXcellence In Applications”) we want to present a possible approach towards solving this research bottleneck through the use of novel compact accelerator technology. Currently in its conceptual design phase, the future EuPRAXIA facility will centre around a multi-gigaelectronvolt plasma-based electron accelerator delivering industrial-grade beam quality. Radiation sources will be available in the form of a Free-Electron Laser in the single nanometre to sub-nanometre wavelength range as well as more compact radiation generation schemes tunable in the UV to gamma-ray regime. Compact positron and neutron sources are foreseen as possible additional features. Thanks to the utilized plasma accelerator technology, the generated beams will be intrinsically ultrashort – on the order of single to tens of femtoseconds in duration – as well as small in transverse size – down to single micrometres. This makes them highly suitable as probe beams for various applications, including time-resolved studies and pump-probe experiments.
One of the main aspects that will set EuPRAXIA apart from conventional instruments of the same class is a considerable reduction in size and cost due to its smaller design. It will thus not only provide a novel analytical instrument, but will also present, beyond that, a first European prototype facility paving the way towards future cost-effective, compact light and particle sources.

Keywords: X-ray source; particle beam source; compact XFEL