Corrugated capillary as THz Cherenkov Smith-Purcell radiator

11th International Symposium on Radiation from Relativistic Electrons in Periodic Structures

Lekomtsev, K.V.^1,2 ; Aryshev, A.S.^1 ; Tishchenko, A.A.^2 ; Ponomarenko, A.A.^2 ; Sukharev, V.M.^2 ; Terunuma, N.^1 ; Urakawa, J.^1 ; Strikhanov, M.N.^2

High Energy Accelerator Research Organisation (KEK), Tsukuba, Japan^1

National Research Nuclear University (MEPhI), Moscow, Russia^2

关键词: Design and assemblies;    Dielectric capillary;    Femtosecond electron;    Field spectra;    Mechanical design;    Particle in cell;    Smith-Purcell;    Smith-Purcell radiations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/732/1/012038/pdf
DOI  :  10.1088/1742-6596/732/1/012038

来源: IOP

【 摘 要 】

In this article we discussed Particle In Cell electromagnetic simulations and mechanical design of dielectric capillaries that produce THz Cherenkov Smith-Purcell radiation (ChSPR), arising when a femtosecond electron multi-bunch beam propagates through corrugated and non-corrugated dielectric capillaries with metallic radiation reflectors. We investigated the influence of the four-bunch beam on the SPR field spectrum and on the ChSPR power spectrum, and the influence of the non-central beam propagation on the ChSPR power spectrum. We also discussed the design and assembly of the capillaries, constructed as sets of cylindrical rings.