Stable particle acceleration in co-axial plasma channels

Abstract

The attainable transformer ratio in plasma accelerators is limited by instabilities. Using three-dimensional particle-in-cell simulations, we demonstrate that these can be controlled using a hollow plasma channel with a co-axial plasma filament. The driver scatters electrons from the filament, and the slow pinch of the ions leads to a strong chirp of the effective betatron frequency, preventing beam breakup. We demonstrate the monoenergetic acceleration of an electron bunch to 20 GeV over 4.4 m, achieving a transformer ratio of 10, an energy efficiency of 40% and an emittance of 1.8 um.

References in corpus (7)

• Phase velocity and particle injection in a self-modulated proton-driven plasma wakefield accelerator
• Mitigation of the hose instability in plasma-wakefield accelerators
• AWAKE readiness for the study of the seeded self-modulation of a 400\,GeV proton bunch
• Measurement of transverse wakefields induced by a misaligned positron bunch in a hollow channel plasma accelerator
• Intrinsic Stabilization of the Drive Beam in Plasma Wakefield Accelerators
• Stability condition for the drive bunch in a collinear wakefield accelerator
• Beam loading in the bubble regime in plasmas with hollow channels

Cited by in corpus (7)

• Stable Positron Acceleration in Thin, Warm, Hollow Plasma Channels
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• Ion dynamics driven by a strongly nonlinear plasma wake
• Solid-state Tube Wakefield Accelerator using Surface Waves in Crystals
• Generation of polarized positron beams via collisions of ultrarelativistic electron beams
• Advanced quasistatic approximation
• TeV acceleration in a Matryoshka plasma channel