PiC code KARAT simulations of Coherent THz Smith-Purcell Radiation from diffraction gratings of various profiles

5th International Congress on Energy Fluxes and Radiation Effects 2016

Artyomov, K.P.^1,2 ; Ryzhov, V.V.^1,2 ; Potylitsyn, A.P.^2 ; Sukhikh, L.G.^2

Institute of High Current Electronics, Siberian Branch, Russian Academy of Sciences, 2/3 Akademichesky Avenue, Tomsk, Russia^1

Tomsk Polytechnic University, 30 Lenin Avenue, Tomsk, Russia^2

关键词: Bunched electron beams;    Femtoseconds;    Groove depth;    Radiation intensity;    Single electron;    Sinusoidal grating;    Smith-Purcell radiations;    Spectral characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/830/1/012147/pdf
DOI  :  10.1088/1742-6596/830/1/012147

来源: IOP

【 摘 要 】

Generation of coherent THz Smith-Purcell radiation by single electron bunch or multi-bunched electron beam was simulated for lamellar, sinusoidal and echelette gratings. The dependences of the CSPR intensity of the corrugation gratings depth were investigated. The angular and spectral characteristics of the CSPR for different profiles of diffraction gratings were obtained. It is shown that in the case of femtosecond multi-bunched electron beam with 10 MeV energy sinusoidal grating with period 292 μm and groove depth 60 μm has the uniform angular distribution with high radiation intensity.