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 possibility to accelerate electron beams to ultra-relativistic velocities over short
distances by using plasma-based technology holds the potential for a revolution in the field …

Generating high-quality laser-plasma accelerated electron beams requires carefully
balancing a plethora of physical effects and is therefore challenging—both conceptually and …

High-efficiency acceleration of charged particle beams at high gradients of energy gain per
unit length is necessary to achieve an affordable and compact high-energy collider. The …

Applications of laser-plasma accelerators demand low energy spread beams and high-
efficiency operation. Achieving both requires flattening the accelerating fields by controlled …

Laser-plasma wakefield accelerators have seen tremendous progress, now capable of
producing quasi-monoenergetic electron beams in the GeV energy range with few …

Energy-efficient plasma-wakefield acceleration of particle bunches with low energy spread
is a promising path to realizing compact free-electron lasers and particle colliders. High …

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 …

We show analytically and through three-dimensional particle-in-cell simulations that
nonlinear wakefields driven by Laguerre-Gaussian laser pulses can lead to hollow electron …