• Open Access

Monochromaticity of coherent Smith-Purcell radiation from finite size grating

A. Aryshev, A. Potylitsyn, G. Naumenko, M. Shevelev, K. Lekomtsev, L. Sukhikh, P. Karataev, Y. Honda, N. Terunuma, and J. Urakawa
Phys. Rev. Accel. Beams 20, 024701 – Published 13 February 2017

Abstract

Investigation of coherent Smith-Purcell radiation (SPR) spectral characteristics was performed both experimentally and by numerical simulation. The measurement of SPR spectral line shapes of different diffraction orders was carried out at the KEK LUCX facility. A pair of room-temperature Schottky barrier diode (SBD) detectors with sensitivity bands of 60–90 GHz and 320–460 GHz was used in the measurements. Reasonable agreement of experimental results and simulations performed with CST Studio Suite justifies the use of different narrow-band SBD detectors to investigate different SPR diffraction orders. It was shown that monochromaticity of the SPR spectral lines increases with diffraction order. The comparison of coherent transition radiation and coherent SPR intensities in sub-THz frequency range showed that the brightnesses of both radiation mechanisms were comparable. A fine tuning feasibility of the SPR spectral lines is discussed.

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  • Received 7 November 2016

DOI:https://doi.org/10.1103/PhysRevAccelBeams.20.024701

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Published by the American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
Accelerators & Beams

Authors & Affiliations

A. Aryshev1,*, A. Potylitsyn2, G. Naumenko2,†, M. Shevelev1, K. Lekomtsev1,3, L. Sukhikh2, P. Karataev3, Y. Honda1,4, N. Terunuma1,4, and J. Urakawa1

  • 1KEK: High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
  • 2Tomsk Polytechnic University, Institute of Physics and Technology, Lenin Avenue 30, Tomsk 634050, Russian Federation
  • 3John Adams Institute at Royal Holloway, University of London, Egham, Surrey TW20 0EX, United Kingdom
  • 4SOKENDAI: The Graduate University for Advanced Studies, 1-1, Oho, Tsukuba, Ibaraki 305-0801, Japan

  • *Corresponding author. alar@post.kek.jp
  • Corresponding author. naumenko@tpu.ru

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Vol. 20, Iss. 2 — February 2017

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