M. Osakabe, T. Ito, R. Seki, S. Murakami1, M. Yoshinuma, K. Ida, K. Y. Watanabe, Y. Matsumoto, M. Kobayashi, A. Bustos3, F. Castejon3, M. Isobe, S. Kobayashi, K. Ogawa, K. Toi, Y. Takeiri, and LHD group Evaluation of Fast-Ion Confinement with Three Dimensional Magnetic Field Configurations on the Large Helical Device


22 IAEA Fusion Energy Conference, EXW/P7-22

Date of publication:

Nov. 2010

Key words:

22 IAEA Fusion Energy Conference, EXW/4-3Rb


The fast-ion confinement properties with the three dimensional magnetic field components are investigated by using the FICXS-diagnostics on LHD. The dependence of fast-ion confinement properties on the Fourier-components of magnetic fields are evaluated by changing the axes of magnetic configuration. The experimental observation qualitatively agrees with the theoretical prediction by GNET. This implies tPhe improvement of fast-ion confinement with the reduction of the sideband components. On the other hand, the improvement of fast-ion confinement with the toroidal mirror components was not observed clearly by the experiment although this might be due to the limitation of observation area with the observation geometry.

List of NIFS Report (2010)Return toContents Page Return toNIFS Homepage