@article{oai:nifs-repository.repo.nii.ac.jp:00000181,
 author = {YOSHIMURA,  Yasuo and KUBO,  Shin and SHIMOZUMA,  Takashi and IGAMI,  Hiroe and TAKAHASHI,  Hiromi and NISHIURA,  Masaki and SAKAKIBARA,  Satoru and TANAKA,  Kenji and NARIHARA,  Kazumichi and MUTOH,  Takashi and YAMADA,  Hiroshi and NAGASAKI,  Kazunobu and MARUSHCHENKO,  Nikolai B. and TURKIN,  Yuri},
 journal = {Plasma and Fusion Research},
 month = {Jul},
 note = {Electron cyclotron current drive (ECCD) experiments were conducted in the Large Helical Device to investigate the characteristics of EC-driven current and its profile and the possibility of controlling current and rotational transform profiles by ECCD. Successful ECCD helps prevent magnetohydrodynamic instabilities in plasmas. Scanning the EC-wave beam direction with a long pulse width of 8 s revealed a systematic change in the plasma current. The current's direction was reversed by a reversal of the beam direction. The direction agrees with the prediction of Fisch-Boozer theory regarding EC-wave beam injection from low-field side. The maximum driven current is 9 kA with an EC-wave power of 100 kW. The optimum beam direction that maximizes the driven current is investigated with the help of ray-tracing code. This direction depends on the magnetic field, efficiency of power absorption, and fraction of the power absorbed by trapped electrons.},
 title = {Dependence of EC-Driven Current on the EC-Wave Beam Direction in LHD},
 volume = {Vol.6},
 year = {2011}
}