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Ponderomotive Injection in Plasma Wakefield Accelerators

Research paper by Ming Zeng, Alberto Martinez de la Ossa, Jens Osterhoff

Indexed on: 20 Aug '20Published on: 19 Aug '20Published in: arXiv - Physics - Plasma Physics



Abstract

A new electron injection scheme is proposed in sub-relativistic plasma wakefield accelerators. A transverse laser ionizes a dopant gas and ponderomotively accelerates the released electrons in the direction of wake propagation. This process enables electron trapping in the wakefield even for a wakefield potential below the trapping threshold. We study the scheme theoretically and by means of particle-in-cell simulations to demonstrate high-quality beam formation and acceleration with sub-micrometer normalized emittances and sub-percent uncorrelated energy spreads.