Linear accelerator-based free-electron lasers (FELs) are the leading source of fully coherent
X-rays with ultra-high peak powers and ultra-short pulse lengths. Current X-ray FEL facilities …

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 …

Plasma-based accelerators use the strong electromagnetic fields that can be supported by
plasmas to accelerate charged particles to high energies. Accelerating field structures in …

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 wakefield accelerators have been used to accelerate electron and positron particle
beams with gradients that are orders of magnitude larger than those achieved in …

This article first gives the authors' perspectives on how the field of plasma-based
acceleration (PBA) developed and how the current experiments, theory, and simulations are …

Reaching high energies with a plasma-wakefield accelerator may require use of multiple
stages. This coupling of beams from one stage to another can be nontrivial due to a …

During the past two decades of research, the ultra-relativistic beam-driven plasma wakefield
accelerator (PWFA) concept has achieved many significant milestones. These include the …

The development of plasma-based accelerators has enabled the generation of very high
brightness electron bunches of femtosecond duration, micrometer size and ultralow …

Current models predict the hose instability to crucially limit the applicability of plasma-
wakefield accelerators. By develo** an analytical model which incorporates the evolution …