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arXiv · 2311.07087

Energy recovery in filament-regime plasma wakefield acceleration of positron beams

Max Varverakis·Robert Holtzapple·Severin Diederichs·Carl Schroeder·Spencer Gessner
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Abstract

Plasma wakefield acceleration using an electron filament offers stable, high-gradient, high-quality acceleration of positron beams analogous to the acceleration of electrons in the blowout regime. However, low energy-transfer efficiency is currently a limiting factor for future collider applications. We explore the addition of a secondary electron bunch in the electron filament plasma wakefield acceleration scheme to recover additional energy from the wake. Particle-in-cell simulations using HiPACE++ are used to demonstrate various energy recovery schemes. In addition to confirming the energy efficiency gains with a recovery electron beam, we also develop energy recovery schemes in the context of future plasma colliders.

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Max Varverakis, Robert Holtzapple, Severin Diederichs, Carl Schroeder, Spencer Gessner. 2023-11-13. Energy recovery in filament-regime plasma wakefield acceleration of positron beams. https://arxiv.org/abs/2311.07087

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