Self-stabilizing positron acceleration in a plasma column

Abstract

Plasma accelerators sustain extreme field gradients, and potentially enable future compact linear colliders. Although tremendous progress has been achieved in accelerating electron beams in a plasma accelerator, positron acceleration with collider-relevant parameters is challenging. A recently proposed positron acceleration scheme relying on the wake generated by an electron drive beam in a plasma column has been shown to be able to accelerate positron witness beams with low emittance and low energy spread. However, since this scheme relies on cylindrical symmetry, it is possibly prone to transverse instabilities that could lead, ultimately, to beam break-up. In this article, we show that the witness beam itself is subject to various damping mechanisms and, therefore, this positron acceleration scheme is inherently stable towards misalignment of the drive and witness beams. This enables stable, high-quality plasma-based positron acceleration.

References in corpus (9)

• Nonlinear laser driven donut wakefields for positron and electron acceleration
• Optical guiding in meter-scale plasma waveguides
• Low-Density Hydrodynamic Optical-Field-Ionized Plasma Channels Generated With An Axicon Lens
• High efficiency uniform wakefield acceleration of a positron beam using stable asymmetric mode in a hollow channel plasma
• Stable Positron Acceleration in Thin, Warm, Hollow Plasma Channels
• HiPACE++: a portable, 3D quasi-static Particle-in-Cell code
• Saturation of the hosing instability in quasi-linear plasma accelerators
• Demonstration of kilohertz operation of Hydrodynamic Optical-Field-Ionized Plasma Channels
• Positron acceleration via laser-augmented blowouts in two-column plasma structures

Cited by in corpus (4)

• Acceleration and focusing of positron bunch in a dielectric waveguide accelerator with homogeneous plasma in transport channel
• Resonant emittance mixing of flat beams in plasma accelerators
• Lattice Boltzmann method for warm fluid simulations of plasma wakefield acceleration
• Thermal fluid closures and pressure anisotropies in numerical simulations of plasma wakefield acceleration