Handling technology of Mega-Watt millimeter-waves for optimized heating of fusion plasmas

Takashi Shimozuma, Shin Kubo, Yasuo Yoshimura, Hiroe Igami, Hiromi Takahashi, Yasuyuki Takita, Sakuji Kobayashi, Satoshi Ito, Yoshinori Mizuno, Hiroshi Idei, Takashi Notake, Michael A. Shapiro, Richard J. Temkin, Federico Felici, Timothy Goodman, Olivier Sauter, Ryutaro Minami, Tsuyoshi Kariya, Tsuyoshi Imai, Takashi Mutoh

    Research output: Contribution to journalArticlepeer-review

    9 Citations (Scopus)


    Millimeter-wave components were re-examined for high power (Mega-Watt) and steady-state (greater than one hour) operation. Some millimeter-wave components, including waveguide joints, vacuum pumping sections, power monitors, sliding waveguides, and injection windows, have been improved for high power CW (Continuous Waves) transmission. To improve transmission efficiency, information about the wave phase and mode content of high power millimeter-waves propagating in corrugated waveguides, which are difficult to measure directly, were obtained by a newly developed method based on retrieved phase information. To optimize the plasma heating efficiency, a proof-of-principle study of the injection polarization feedback control was performed in the low power test stand.

    Original languageEnglish
    Pages (from-to)43160-43170
    Number of pages11
    JournalJournal of Microwave Power and Electromagnetic Energy
    Issue number1
    Publication statusPublished - 2009

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Ceramics and Composites
    • Condensed Matter Physics
    • Metals and Alloys
    • Electrical and Electronic Engineering


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