学術雑誌論文 Active stabilization of error field penetration via control field and bifurcation of its stable frequency range

井上, 静雄  ,  白石, 淳也  ,  武智, 学  ,  松永, 剛  ,  諫山, 明彦  ,  林, 伸彦  ,  井手, 俊介

57 ( 11 )  , pp.116020-1 - 116020-10 , 2017-10 , Institute of Physics
内容記述
An active stabilization effect of a rotating control field against an error field penetration is numerically studied. We have developed a resistive magnetohydrodynamic code “AEOLUS-IT”, which can simulate plasma responses to rotating/static external magnetic field. Adopting non-uniform flux coordinates system, the AEOLUS-IT simulation can employ high magnetic Reynolds number condition relevant to present tokamaks. By AEOLUS-IT, we successfully clarified the stabilization mechanism of the control field against the error field penetration. Physical processes of a plasma rotation drive via the control field are demonstrated by the nonlinear simulation, which reveals that the rotation amplitude at a resonant surface is not a monotonic function of the control field frequency, but has an extremum. Consequently, two “bifurcated” frequency ranges of the control field are found for the stabilization of the error field penetration.

このアイテムのアクセス数:  回

その他の情報