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Influence of Controlled Reflected Power on Gyrotron Performance

  • N. Kharchev
  • Á. Cappa
  • D. Malakhov
  • J. Martínez
  • E. Konchekov
  • A. Tolkachev
  • V. Borzosekov
  • K. Sarksyan
  • M. Petelin
Article

Abstract

This paper describes the reaction of a gyrotron oscillator when a very small fraction of its radiation, extracted from the main beam, is phase-modulated in a controlled way and is finally redirected back to the gyrotron. The gyrotron may exhibit a 10 % modulation of its total power even if the reflected power is lower than 1 %. Moreover, radial probing of the beam power distribution shows that the amplitude of the power modulation differs at different radial positions across the beam.

Keywords

Gyrotron Impact of reflected radiation ECRH 

References

  1. 1.
    G. Batanov, L. Kolik, Yu. Novozhilova, M. Petelin, A. Petrov, K. Sarksyan, N. Skvortsova, and N. Kharchev, Response of a gyrotron to small-amplitude low-frequency-modulated microwaves reflected from a plasma, Technical Physics 46(5), 595–600 (2001)CrossRefGoogle Scholar
  2. 2.
    A. Fernández, N. Kharchev, A. Pshenichnikov, Yu. Bondar, K. Sarksyan, A. Tolkachev, and M. Petelin, Int. J. Infrared Millim. Waves 28(9), 705–711 (2007)CrossRefGoogle Scholar
  3. 3.
    O. Dumbrajs, Int. J. Infrared Millim. Waves 31, 892–898 (2010)Google Scholar
  4. 4.
    Yu.V. Novozhilova and A.S. Ishesnko, Int. J. Infrared Millim. Waves 32, 1394–1406 (2011)CrossRefGoogle Scholar
  5. 5.
    A. Fernández, W. Kasparek, K. Likin, and R. Martín, Int. J. Infrared Millim. Waves 22(5), 649–660 (2001)CrossRefGoogle Scholar
  6. 6.
    R.E. Collin, Field Theory of Guided Waves, pp. 181–199, IEEE Press, (1991)Google Scholar

Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.General Physics InstituteRASMoscowRussia
  2. 2.National Fusion LaboratoryCIEMATMadridSpain
  3. 3.Russian Academy of SciencesNiznhny NovgorodRussia

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