Bunch-excited wakefield in dielectric waveguide with hollow plasma channel
Abstract
Wakefield excitation by a single relativistic electron bunch in a plasma-dielectric accelerating structure has been studied both analytically and numerically. The structure represents a dielectric-loaded cylindrical metal waveguide, which has partially plasma-filled channel (the hollow plasma channel) to transport charged particles. Assuming the linear regime of excitation, analytical expressions have been derived for the longitudinal and radial wakefields generated by a finite-size electron bunch. Axial profiles of wakefield component amplitudes have been studied, and their mode and spectrum analyses have been performed. Furthermore, the electron bunch-driven wakefield excitation has been PIC-simulated numerically for the quasi-linear regime. The comparative analysis of the data resulting from analytical studies and the ones obtained by numerical simulation has demonstrated qualitative agreement between the results.
Keywords
Cite
@article{arxiv.2311.17614,
title = {Bunch-excited wakefield in dielectric waveguide with hollow plasma channel},
author = {K. V. Galaydych and P. I. Markov and G. V. Sotnikov},
journal= {arXiv preprint arXiv:2311.17614},
year = {2023}
}