Monochromaticity of coherent Smith-Purcell radiation from finite size grating
نویسندگان
چکیده
A. Aryshev, ∗ A. Potylitsyn, G. Naumenko, † M. Shevelev, K. Lekomtsev, 3 L. Sukhikh, P. Karataev, Y. Honda, 4 N. Terunuma, 4 and J. Urakawa KEK: High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan Tomsk Polytechnic University, Institute of Physics and Technology, Lenin Avenue 30, Tomsk 634050, Russian Federation John Adams Institute at Royal Holloway, University of London, Egham, Surrey TW20 0EX, United Kingdom SOKENDAI: The Graduate University for Advanced Studies, 1-1, Oho, Tsukuba, Ibaraki 305-0801, Japan
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N ov 2 00 3 Experimental investigation of coherent Smith - Purcell radiation from a ” flat ” grating
Using the pre-bunched electron beam of 5-MeV linear accelerator the coherent Smith-Purcell radiation (CSPR) from a flat periodic target (made of conductive layers separated by dielectric gaps) in millimeter wavelength region has been investigated. The angular distribution of this radiation was measured with a narrow-band detector and experimental data agree with our theoretical calculations for...
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Smith-Purcell radiation (SPR), formed by an electron beam traveling above a grating, is a very promising source of coherent radiation from the THz to the optical regime. We present two theoretical calculations of the SPR from a two-dimensional bunch of relativistic electrons passing above a grating of finite length. The first calculation uses the finite-difference time-domain approach with the ...
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Smith-Purcell radiation (SPR) from a lamellar grating with vacuum gaps was calculated using Computer Simulation Technology (CST) Particle In Cell (PIC) solver. The shapes of the radiation distributions were compared with those of Resonant Diffraction Radiation theory. Study of calculation domain meshing was performed. Influence of a transverse bunch size on the calculation accuracy and an SPR i...
متن کاملObservation of optical Smith-Purcell radiation at an electron beam energy of 855 MeV.
Smith-Purcell radiation, generated when a beam of charged particles passes close to the surface of a diffraction grating, has been studied in the visible spectral range at wavelengths of 360 and 546 nm with the low emittance 855 MeV electron beam of the Mainz Microtron MAMI. The beam focused to a spot size of 4 microm (full width at half maximum) passed over optical diffraction gratings of eche...
متن کاملAuthor manuscript, published in "International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Mainz: Germany (2013)" Some Properties of Coherent Smith-Purcell radiation from electron bunches and gratings of finite dimensions.
— There is a strong interest in the development of single shot diagnostics of fs relativistic electron bunches within research areas including THz sources of radiation. The goal of the work presented is to understand the properties of coherent Smith-Purcell radiation to enable the reconstruction of the longitudinal profile of a fs-long electron bunch.
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