First Results of Simultaneous Multipoint Plasma Potential Measurements Using a Gold Neutral Beam Probe

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Author(s)

    • MIYATA Yoshiaki
    • Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki, 305-8577 Japan
    • YOSHIKAWA Masayuki
    • Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki, 305-8577 Japan
    • SAKAMOTO Mizuki
    • Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki, 305-8577 Japan
    • MIZUGUCHI Masanori
    • Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki, 305-8577 Japan
    • YAGUCHI Fumiaki
    • Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki, 305-8577 Japan
    • AOYAMA Masato
    • Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki, 305-8577 Japan
    • TANEMURA Yoshiaki
    • Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki, 305-8577 Japan
    • IMAI Tsuyoshi
    • Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki, 305-8577 Japan

Abstract

The physical mechanisms of the improvement of plasma confinement due to the formation of electrostatic potential and electric field were studied. A 12-keV gold neutral beam probe (GNBP) with the same capabilities as a heavy ion beam probe was operated on the GAMMA 10 tandem mirror. The simultaneous multipoint system was developed to measure the local electric field. The structure of the novel analyzer and the technique for measuring the local electric field were studied by using the calculation code of three-dimensional beam trajectory. It was possible for the first time to measure the local electric field in a single plasma shot by the simultaneous multipoint plasma potential measurement system using the GNBP in the GAMMA 10 tandem mirror.

Journal

  • Plasma and Fusion Research

    Plasma and Fusion Research (6), 1202090-1202090, 2011

    The Japan Society of Plasma Science and Nuclear Fusion Research

Cited by:  1

Codes

  • NII Article ID (NAID)
    130001066522
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • Data Source
    CJPref  J-STAGE 
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