Evaluation of an Energetic Particle Profile Using a Tangential-FIDA Diagnostic in the Large Helical Device

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  • FUJIWARA Yutaka
    National Institute for Fusion Science, National Institutes of Natural Sciences
  • KAMIO Shuji
    National Institute for Fusion Science, National Institutes of Natural Sciences
  • YAMAGUCHI Hiroyuki
    National Institute for Fusion Science, National Institutes of Natural Sciences
  • GARCIA Alvin V.
    University of California, Irvine
  • STAGNER Luke
    Oak Ridge Institute for Science and Education
  • NUGA Hideo
    National Institute for Fusion Science, National Institutes of Natural Sciences
  • SEKI Ryosuke
    National Institute for Fusion Science, National Institutes of Natural Sciences SOKENDAI (The Graduate University for Advanced Studies)
  • OGAWA Kunihiro
    National Institute for Fusion Science, National Institutes of Natural Sciences SOKENDAI (The Graduate University for Advanced Studies)
  • ISOBE Mitsutaka
    National Institute for Fusion Science, National Institutes of Natural Sciences SOKENDAI (The Graduate University for Advanced Studies)
  • YOKOYAMA Masayuki
    National Institute for Fusion Science, National Institutes of Natural Sciences SOKENDAI (The Graduate University for Advanced Studies)
  • NISHITANI Takeo
    National Institute for Fusion Science, National Institutes of Natural Sciences
  • HEIDBRINK William W.
    National Institute for Fusion Science, National Institutes of Natural Sciences University of California, Irvine
  • OSAKABE Masaki
    National Institute for Fusion Science, National Institutes of Natural Sciences SOKENDAI (The Graduate University for Advanced Studies)
  • LHD Experiment Group
    National Institute for Fusion Science, National Institutes of Natural Sciences

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抄録

<p>A tangential Fast-Ion D Alpha (FIDA) diagnostic is applied to the Large Helical Device (LHD) in order to observe energetic distribution of toroidal circulating energetic particles which are produced by tangential Negative Neutral Beams (NNB). A perpendicular Positive NB (PNB) is used as the diagnostic probe beam of the tangential-FIDA diagnostic in this observation geometry. In order to assess the appropriateness of the tangential-FIDA diagnostic, the experimental result was compared with a Silicon-diode-based Fast Neutral Analyzer (Si-FNA) which was installed on the same line of sight. As a result of the comparison, the tangential-FIDA and the Si-FNA experimental data obtained good linearity in the energy region from 60 keV to 180 keV. In addition, an enhanced FIDASIM was applied for analyzing the FIDA on the three-dimensional magnetic configuration fusion device.</p>

収録刊行物

  • Plasma and Fusion Research

    Plasma and Fusion Research 14 (0), 3402129-3402129, 2019-07-11

    一般社団法人 プラズマ・核融合学会

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