This report presents the conceptual design of a new European research infrastructure
EuPRAXIA. The concept has been established over the last four years in a unique …

The peak power of a femtosecond laser is limited by the size and damage threshold of its
solid-state optical components, with the final grating of a chirped pulse amplification …

Ionization injection-assisted laser wakefield acceleration of electrons up to 120 MeV is
demonstrated in a 1.5 mm long pure helium-like nitrogen plasma waveguide. The guiding …

We present the design and characterization of a thin, high density pulsed gas jet for use in
the study of near critical laser plasma interactions with ultrashort Ti: sapphire laser pulses …

We determine the size of argon clusters generated with a planar nozzle, based on the
optical measurements in conjunction with theoretical modelling. Using a quasi-one …

We present an all-optical method for measuring the average size, density, and mass fraction
of large (> 50 nm) clusters produced in cryogenically cooled, continuous gas jets. The …

We demonstrate the generation of axially modulated plasma waveguides using spatially
patterned high-energy laser pulses. A spatial light modulator (SLM) imposes transverse …

Laser-driven particle accelerators have the potential to be a compact and cost-effective
replacement for conventional accelerators. Despite the significant achievements of laser …

In the cavitation regime of plasma-based accelerators, a population of high-energy electrons
trailing the driver can undergo betatron motion. The motion results in X-ray emission, but the …

The propagation of an intense laser beam in an alternating corrugated plasma channel,
which has a wide region and a narrow region in one corrugated space period, is …