Stable Positron Acceleration in Thin, Warm, Hollow Plasma Channels

Abstract

Hollow plasma channels are attractive for lepton acceleration because they provide intrinsic emittance preservation regimes. However, beam breakup instabilities dominate the dynamics. Here, we show that thin, warm hollow channels can sustain large-amplitude plasma waves ready for high-quality positron acceleration. We verify that the combination of warm electrons and thin hollow channel enables positron focusing structures. Such focusing wakefields unlock beam breakup damping mechanisms. We demonstrate that such channels emerge self-consistently during the long-term plasma dynamics in the blowout's regime aftermath, allowing for experimental demonstration.

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• Positron acceleration via laser-augmented blowouts in two-column plasma structures
• Positron acceleration in plasma waves driven by non-neutral fireball beams
• Resonant emittance mixing of flat beams in plasma accelerators
• Positron Driven High-Field Terahertz Waves in Dielectric Material
• Lattice Boltzmann method for warm fluid simulations of plasma wakefield acceleration
• A compact, all-optical positron production and collection scheme
• Thermal fluid closures and pressure anisotropies in numerical simulations of plasma wakefield acceleration