Laser-wakefield accelerators (LWFAs) were proposed more than three decades ago, and
while they promise to deliver compact, high energy particle accelerators, they will also …

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 …

Free-electron lasers generate high-brilliance coherent radiation at wavelengths spanning
from the infrared to the X-ray domains. The recent development of short-wavelength seeded …

Laser-plasma acceleration promises compact sources of high-brightness relativistic electron
beams. However, the limited stability often associated with laser-plasma acceleration has …

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

Laser-driven plasma accelerators provide acceleration gradients that are three orders of
magnitude greater than those generated by conventional accelerators, offering the potential …

Compact, tunable, radially symmetric focusing of electrons is critical to laser-plasma
accelerator (LPA) applications. Experiments are presented demonstrating the use of a …

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 …

By designing a structured gas density profile between the dual-stage gas jets to manipulate
electron seeding and energy chirp reversal for compressing the energy spread, we have …

A method is proposed to generate femtosecond, ultralow emittance (∼ 10− 8 m rad),
electron beams in a laser-plasma accelerator using two lasers of different colors. A long …