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| P07 · Local Measurement of Energetic Particles in a Core Plasma by a Directional Probe Method K. Nagaoka, M. Isobe, *K. Shinohara, M. Osakabe, S. Okamura, CHS group National Institute for Fusion Science Abstract: A directionnal probe method is applied for energetic particle measurements in outer and inside the last closed flux surface. The two experimental demonstrations have been performed in the compact helical system (CHS). One is neutral beam modulation experiment and the other is the measurement of MHD burst induced loss of energetic ions. The spatial variation of energetic particle response to MHD burst can be observed, which is considerd as a first experimental observation.
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