Speaker
Mr
Kazunobu Nagasaki
(Japan)
Description
Second harmonic electron cyclotron current drive (ECCD) has been applied in the Stellarator/Heliotron device, Heliotron J, to control rotational transform profile. Localized EC driven current at central region changes the rotational transform, making a high magnetic shear. An energetic-ion-driven MHD mode of 80 kHz has been completely stabilized when the counter EC current of more than 2 kA is driven. An experiment of scanning the EC driven current shows that there is a threshold in magnetic shear to stabilize the energetic-ion-driven MHD mode.
Country or International Organization of Primary Author
Japan
Primary author
Mr
Kazunobu Nagasaki
(Japan)
Co-authors
Prof.
Fumimichi Sano
(Institute of Advanced Energy, Kyoto University)
Dr
Gen Motojima
(National Institure for Fusion Science)
Dr
Hiroyuki Okada
(Institute of Advanced Energy, Kyoto University)
Mr
Hyung Yong Lee
(Graduate School of Energy Science, Kyoto University)
Dr
Kai Masuda
(Institute of Advanced Energy, Kyoto University)
Mr
Kinzo Sakamoto
(Institute of Advanced Energy, Kyoto University)
Dr
Kiyofumi Mukai
(Graduate School of Energy Science, Kyoto University)
Dr
Kiyoshi Hanatani
(Institute of Advanced Energy, Kyoto University)
Mr
Koji Mizuno
(Graduate School of Energy Science, Kyoto University)
Mr
Linge Zang
(Graduate School of Energy Science, Kyoto University)
Dr
Nikolai Marushchenko
(Max-Planck Institute for Plasma Physics)
Dr
Satoshi Yamamoto
(Institute of Advanced Energy, Kyoto University)
Dr
Shigeru Konoshima
(Institute of Advanced Energy, Kyoto University)
Dr
Shinji Kobayashi
(Institute of Advanced Energy, Kyoto University)
Dr
Shinsuke Ohshima
(Institute of Advanced Energy, Kyoto University)
Dr
Takashi Minami
(Institute of Advanced Energy, Kyoto University)
Mr
Takayuki Minami
(Graduate School of Energy Science, Kyoto University)
Mr
Tasuku Kagawa
(Graduate School of Energy Science, Kyoto University)
Dr
Teresa Estrada
(CIEMAT)
Dr
Tohru MIZUUCHI
(Institute of Advanced Energy, Kyoto University)
Dr
Yasuo Yoshimura
(National Institute for Fusion Science)
Ms
Yoko Nagae
(Graduate School of Energy Science, Kyoto University)
Mr
Yuichi Nakamura
(Graduate School of Energy Science, Kyoto University)
Prof.
Yuji Nakamura
(Graduate School of Energy Science, Kyoto University)
Dr
Yuri Turkin
(Max-Planck Institute for Plasma Physics)
