Acceleration

Physics

Electron

Plasma acceleration

Positron

Optics

Beam (structure)

RADIUS

Atomic physics

Nuclear physics

Computer science

Dense plasma focus

Plasma

Computer security

Classical mechanics

Physical Review Accelerators and Beams

A finite radius plasma is proposed to generate wakefields that can focus and accelerate positron beams in a plasma wakefield accelerator. The finite radius plasma reduces the restoring force acting on the plasma electrons forming the plasma wakefield, resulting in an elongation of the on-axis return point of the electrons and, hence, creating a long, high-density electron filament. This results in a region with accelerating and focusing fields for positrons, allowing for the acceleration and quality-preserving transport of high-charge positron beams.

Positron transport and acceleration in beam-driven plasma wakefield accelerators using plasma columns