Plasma and Fusion Research
Volume 9, 3402097 (2014)
Regular Articles
- 1)
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
- 2)
- The Graduate University for Advanced Studies (SOKENDAI), Toki 509-5292, Japan
Abstract
In this study, using a scintillator-based lost fast-ion probe, we have measured fast-ion losses in the Large Helical Device, in which the losses were caused by externally applied static magnetic perturbations (MPs) having small amplitudes. Energy and pitch-angle resolved measurements reveal that the effects of MPs on fast-ion losses occur in both high and low pitch-angle regions. A Lorentz orbit-following calculation indicates that static MPs can change the orbits of fast ions, which can enhance the transport/loss of fast ions.
Keywords
fast ion, Large Helical Device, lost-fast ion probe, static magnetic perturbation
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This paper may be cited as follows:
Kunihiro OGAWA, Mitsutaka ISOBE, Kazuo TOI, Akihiro SHIMIZU, Masaki OSAKABE and LHD Experiment Group, Plasma Fusion Res. 9, 3402097 (2014).