Effect of Dielectric Wakefields in a Capillary Discharge for Plasma Wakefield Acceleration

Dielectric capillaries are widely used to generate plasmas for plasma wakefield acceleration. When a relativistic drive bunch travels through a capillary with misaligned trajectory with respect to the capillary axis, it is deflected by the effect of the dielectric transverse wakefields it drives. We...

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Main Authors Verra, L, Galletti, M, Pompili, R, Biagioni, A, Carillo, M, Cianchi, A, Crincoli, L, Curcio, A, Demurtas, F, Di Pirro, G, Lollo, V, Parise, G, Pellegrini, D, Romeo, S, Silvi, G. J, Villa, F, Ferrario, M
Format Journal Article
LanguageEnglish
Published 09.10.2024
Subjects
Physics - Accelerator Physics
Physics - Plasma Physics
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Summary:Dielectric capillaries are widely used to generate plasmas for plasma wakefield acceleration. When a relativistic drive bunch travels through a capillary with misaligned trajectory with respect to the capillary axis, it is deflected by the effect of the dielectric transverse wakefields it drives. We experimentally show that the deflection effect increases along the bunch and with larger misalignment, and we investigate the decay of dielectric wakefields by measuring the effect on the front of a trailing bunch. We discuss the implications for the design of a plasma wakefield accelerator based on dielectric capillaries.
DOI:10.48550/arxiv.2410.06684