Relativistic interaction of short-pulse lasers with underdense plasmas has recently led to the
emergence of a novel generation of femtosecond x-ray sources. Based on radiation from …

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 concepts of matched-beam, self-guided laser propagation and ionization-induced
injection have been combined to accelerate electrons up to 1.45 GeV energy in a laser …

Plasma-based accelerators that impart energy gain as high as several GeV to electrons or
positrons within a few centimeters have engendered a new class of diagnostic techniques …

Plasma density gradients in a gas jet were used to control the wake phase velocity and
trapping threshold in a laser wakefield accelerator, producing stable electron bunches with …

We demonstrate a laser wakefield accelerator with a novel electron injection scheme
resulting in enhanced stability, reproducibility, and ease of use. In order to inject electrons …

Laser wakefield acceleration of electrons holds great promise for producing ultracompact
stages of GeV scale, high-quality electron beams for applications such as x-ray free electron …

The acceleration of electrons to≃<? format?> 0.8 GeV has been observed in a self-injecting
laser wakefield accelerator driven at a plasma density of 5.5× 10 18 cm-3 by a 10 J, 55 fs …

X-ray spectroscopy is used to obtain single-shot information on electron beam emittance in a
low-energy-spread 0.5 GeV-class laser-plasma accelerator. Measurements of betatron …

Table-top laser-driven plasma accelerators are gaining attention for their potential use in
miniaturizing future high-energy accelerators. By irradiating gas jet targets with ultrashort …