Experimental Evaluation of Energy Transfer between Fast Ions and Alfven Eigenmodes

POSTER

Abstract

Recently, a new wave-particle analyzer was proposed to identify interaction between fast ions and Alfven eigenmodes [K. Nagaoka, 67$^{\mathrm{th}}$ annual meeting of APS-DPP, savanna, 2015]. A data acquisition system for the wave-particle interaction analysis was developed for particle counting mode operation of neutral particle detectors. We recently applied the system to the Si-FNA detector signals in LHD and Heliotron J, and NPA signals in TJ-II. The first experimental results obtained in three devices are presented and the importance of the optimization of line of sight will be discussed.

*This research was supported by NIFS/NINS under the project of 'Promotion of International Network for Scientific Collaboration', NIFS Collaboration Research program (NIFS16KUHL068 ) and JSPS KAKENHI Grani-in-Aid for Young Scientists (A) 26709071.

Authors

  • Kenichi Nagaoka

    • National Institutes of Natural Sciences, National Institute for Fusion Science
    • National Institute for Fusion Science

  • Masaki Osakabe

    • National Institutes of Natural Sciences, National Institute for Fusion Science
    • National Institute for Fusion Science

  • Mitsutaka Isobe

    • National Institutes of Natural Sciences, National Institute for Fusion Science

  • Kunihiro Ogawa

    • National Institutes of Natural Sciences, National Institute for Fusion Science

  • Yasuhiro SUZUKI

    • National Institutes of Natural Sciences, National Institute for Fusion Science
    • National Institute for Fusion Science
    • Natl Inst Fusion Science-Toki

  • Shinji Kobayashi

    • Kyoto University

  • Satoshi Yamamoto

    • Kyoto University

  • Yoshizumi Miyoshi

    • Nagoya University

  • Yuto Katoh

    • Tohoku University

  • Josep Maria Fontdecaba

    • CIEMAT (Energy, Environment and Technology Research Center)

  • Enrique Ascasibar

    • CIEMAT (Energy, Environment and Technology Research Center)