THz Wakefield radiation generation via dielectric Bragg waveguide

Sharples, Emmy and Letizia, Rosa (2015) THz Wakefield radiation generation via dielectric Bragg waveguide. In: Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2015 9th International Congress on. IEEE, GBR, pp. 289-291. ISBN 9781479978366

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In this paper, the wakefield response of a dielectric Bragg waveguide (DBW) driven by electron bunches is reported. The structure comprises of a cylindrical dielectric lined waveguide with the metallic coating replaced by a Bragg reflector. Starting from the theory of planar Bragg reflectors, a new analytical approach to structural design is derived via numerical simulations. By adjusting the layer thickness condition and the number of layers, the DWB can be optimised to give the strongest wakefield response. The wakefields can be used for the direct excitation of high-power THz radiation or for high-gradient acceleration.

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18 May 2016 14:28
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17 Sep 2023 03:56