Development of 28/35 GHz dual-frequency gyrotron for ECH study

T. Kariya, T. Imai, R. Minami, K. Tsumura, Y. Ebashi, H. Idei, K. Hanada, M. Ono, K. Komurasaki, T. Numakura, Y. Endo, Y. Nakashima

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The high power and long pulse operation of the gyrotron as well as efficient transmission of its output are quite important for achieving improved plasma performances. A 28 GHz 1 MW gyrotron developed for GAMMA 10/PDX achieved an output power of 1.38 MW in 2015 experiment after the power supply was improved. Furthermore, a new 28/35 GHz dual-frequency gyrotron (2 MW 3 s and 0.4 MW CW) for QUEST, NSTX-U, Heliotron J and GAMMA 10/PDX has been fabricated, after the preliminary test of a double-disk sapphire window installed in the gyrotron was performed. In the first experimental test, the oscillation of the main mode was confirmed at a frequency of 28.036 GHz with a Gaussian-like beam and an output power of 1.22 MW.

    Original languageEnglish
    Title of host publicationOpen Magnetic Systems for Plasma Confinement, OS 2016
    Subtitle of host publicationProceedings of the 11th International Conference on Open Magnetic Systems for Plasma Confinement
    EditorsAleksey Arakcheev, Anton Sudnikov
    PublisherAmerican Institute of Physics Inc.
    ISBN (Electronic)9780735414297
    DOIs
    Publication statusPublished - Oct 11 2016
    Event11th International Conference on Open Magnetic Systems for Plasma Confinement, OS 2016 - Akademgorodok, Novosibirsk, Russian Federation
    Duration: Aug 8 2016Aug 12 2016

    Publication series

    NameAIP Conference Proceedings
    Volume1771
    ISSN (Print)0094-243X
    ISSN (Electronic)1551-7616

    Other

    Other11th International Conference on Open Magnetic Systems for Plasma Confinement, OS 2016
    CountryRussian Federation
    CityAkademgorodok, Novosibirsk
    Period8/8/168/12/16

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy(all)

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  • Cite this

    Kariya, T., Imai, T., Minami, R., Tsumura, K., Ebashi, Y., Idei, H., Hanada, K., Ono, M., Komurasaki, K., Numakura, T., Endo, Y., & Nakashima, Y. (2016). Development of 28/35 GHz dual-frequency gyrotron for ECH study. In A. Arakcheev, & A. Sudnikov (Eds.), Open Magnetic Systems for Plasma Confinement, OS 2016: Proceedings of the 11th International Conference on Open Magnetic Systems for Plasma Confinement [030020] (AIP Conference Proceedings; Vol. 1771). American Institute of Physics Inc.. https://doi.org/10.1063/1.4964176