• Open Access

Radiation of a charge flying in a partially loaded dielectric section of a waveguide

Aleksandra A. Grigoreva, Andrey V. Tyukhtin, Viktor V. Vorobev, Sergey N. Galyamin, and Sergey Antipov
Phys. Rev. Accel. Beams 21, 031302 – Published 12 March 2018

Abstract

We consider the electromagnetic field of a point charged particle moving along the axis of a cylindrical waveguide from a homogeneously filled area to a dielectric loading area having an axially symmetrical channel. We are interested in studying the Cherenkov radiation excited in the bilayer area. The solution is performed by expanding the field in each area in a series of orthogonal eigenmodes. The main attention is focused on investigation of the wave field in the bilayer section. We show that, at a given observation point, the “reduced wakefield” is simplified with time (the number of modes decreases). The obtained results are generalized for the case of a bunch with Gaussian longitudinal profile. The typical numerical results for wakefield formation process are presented. These results agree with simulations done by the industry standard electromagnetic code CST Particle Studio.

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  • Received 22 November 2017

DOI:https://doi.org/10.1103/PhysRevAccelBeams.21.031302

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Accelerators & Beams

Authors & Affiliations

Aleksandra A. Grigoreva1, Andrey V. Tyukhtin1, Viktor V. Vorobev1, Sergey N. Galyamin1, and Sergey Antipov2

  • 1Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia
  • 2Euclid Techlabs, 365 Remington blvd, Bolingbrook, Illinois 60440, USA and Argonne National Laboratory, 9700 S. Cass ave, Lemont, Illinois 60439, USA

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Vol. 21, Iss. 3 — March 2018

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