Skip to main content
SpringerLink
Log in

Improved gyrotron cavity with high quality factor

  • Published:
International Journal of Infrared and Millimeter Waves Aims and scope Submit manuscript

Abstract

For gyrotrons operating at the second harmonic of the electron cyclotron frequency cavities with high quality factors are needed. Up to now steep output tapers or abrupt output irises are used in order to provide a high reflection coefficient. Such circuits suffer from the problem of strong conversion to unwanted output modes. A promising possibility to achieve a high reflection at the cavity output (and thus a high quality factor) combined with high mode purity is the use of a rounded iris and an optimized nonlinear taper with very low unwanted mode conversion at the output of the resonator.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. G.I.Zarudneva, Yu.K.Kalyunov, S.A.Malygin, Radiation mode composition of open resonators in the form of axisymmetric, weakly irregular waveguides, Radiophysics and Quantum Electronics, 1988,31, 254–257.

    Article  Google Scholar 

  2. O.Dumbrajs, M.Thumm, J.Pretterebner, D.Wagner, A cavity with reduced mode conversion for gyrotrons, Int.J. of Infrared and Millimeter Waves, 1992,13, 825–840.

    Article  Google Scholar 

  3. D.Wagner, J.Pretterebner, M.Thumm, Determination of resonance frequencies and quality factors of high power microwave resonators, 17th Int. Conf. on Infrared and Millimeter Waves, Pasadena, 1992, Proc., SPIE,1929, 36–37.

    Google Scholar 

  4. M.Thumm, A.Jacobs, M.Sorolla Ayza, Design of short high-power TE11-HE11 mode converters in highly overmoded corrugated waveguides, IEEE Trans. on Microwave Theory and Techniques, 1991,39, 301–309.

    Article  Google Scholar 

  5. G.F.Brand, Mode competition in a high harmonic tunable gyrotron, Int.J. of Infrared and Millimeter Waves, 1994,15, 45–52.

    Article  Google Scholar 

  6. K.D.Hong, G.F.Brand, T.Idehara, A 150–600 GHz step-tunable Gyrotron, J. Applied Physics, 1993,74, 5250–5258.

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Institut für Plasmaforschung, Universität Stuttgart, Pfaffenwaldring 31, D-70569, Stuttgart, Germany

    D. Wagner, G. Gantenbein & W. Kasparek

  2. Forschungszentrum Karlsruhe, Institut für Technische Physik, P.O. Box 3640, D-76021, Karlsruhe, Germany

    M. Thumm

  3. Institut für Höchstfrequenztechnik und Elektronik, Universität Karlsruhe, P.O. Box 3640, D-76021, Karlsruhe, Germany

    M. Thumm

Authors
  1. D. Wagner
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. G. Gantenbein
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. W. Kasparek
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. M. Thumm
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Wagner, D., Gantenbein, G., Kasparek, W. et al. Improved gyrotron cavity with high quality factor. Int J Infrared Milli Waves 16, 1481–1489 (1995). https://doi.org/10.1007/BF02274811

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02274811

Key words

Search

Navigation