Collective Thomson scattering of a high power electron cyclotron resonance heating beam in LHD

S. Kubo (Invited author), M. Nishiura (Invited author), K. Tanaka (Invited author), T. Shimozuma (Invited author), Y. Yoshimura (Invited author), H. Igami (Invited author), H. Takahash (Invited author), T. Mutoh (Invited author), N. Tamura (Invited author), Y. Tatematsu (Invited author), T. Notake (Invited author), Søren Bang Korsholm (Invited author), Fernando Meo (Invited author), Stefan Kragh Nielsen (Invited author), Mirko Salewski (Invited author), Morten Stejner Pedersen (Invited author)

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract

    Collective Thomson scattering (CTS) system has been constructed at LHD making use of the high power ECRH system in LHD. The necessary features for CTS, high power probing beams and receiving beams, both with well defined Gaussian profile and with the fine controllability, are endowed in the ECRH system. The 32 channel radiometer with sharp notch filter at the front end is attached to the ECRH system transmission line as a CTS receiver. The validation of the CTS signal is performed by scanning the scattering volume. A new method to separate the CTS signal from background ECE is developed and applied to derive the bulk and high energy ion components for several combinations of NBI heated plasmas.
    Original languageEnglish
    JournalReview of Scientific Instruments
    Volume81
    Pages (from-to)10D535
    ISSN0034-6748
    DOIs
    Publication statusPublished - 2010
    Event18th Topical Conference on High-temprature Plasma Diagnostics - Wildwood, New Jersey, United States
    Duration: 16 May 201020 May 2010
    Conference number: 18
    http://htpd2010.pppl.gov/

    Conference

    Conference18th Topical Conference on High-temprature Plasma Diagnostics
    Number18
    CountryUnited States
    CityWildwood, New Jersey
    Period16/05/201020/05/2010
    Internet address

    Keywords

    • Fusion energy

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