Characteristics of Smith-Purcell radiation in millimeter wavelength region

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

Naumenko, G.A.^1 ; Potylitsyn, A.P.^1 ; Karataev, P.^3 ; Bleko, V.^2 ; Sukhikh, L.G.^1 ; Shevelev, M.V.^1 ; Popov, Yu.^1

Tomsk Polytechnic University, Lenina Ave. 2a, Tomsk, Russia^1

RASA Center in Tomsk, Tomsk Polytechnic University, Lenina Ave. 2a, Tomsk, Russia^2

John Adams Institute at Royal Holloway, University of London, Egham, Surrey

TW20 0EX, United Kingdom^3

关键词: Beam diagnostics;    Coherent effect;    Experimental investigations;    Millimeter wavelength;    Relativistic electron beam;    Shadowing effects;    Smith-Purcell radiations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/732/1/012018/pdf
DOI  :  10.1088/1742-6596/732/1/012018

来源: IOP

【 摘 要 】

Investigations of the Smith-Purcell radiation (SPR) were began with non-relativistic electron beams with some unexpected experimental results. Further the experimental investigations were performed with relativistic electron beams for application to beam diagnostics. Large discrepancy between different theoretical models significantly increases the role of experimental studies of this phenomenon. In this report we present some problems and features of experimental investigations of SPR in millimeter wavelength region. The problems of prewave zone and coherent effects are considered. The shadowing effect, focusing of radiation using a parabolic SPR target and effect of inclination of target strips were investigated with moderately relativistic electron beam.