Suppression of fast-ion-driven MHD instabilities by ECH/ECCD on Heliotron J
作者: S. YamamotoK. NagasakiS. KobayashiK. NagaokaA. CappaH. OkadaT. MinamiS. KadoS. OhshimaS. KonoshimaY. NakamuraA. IshizawaG.M. WeirN. KenmochiY. OhtaniX. LuY. TawadaD. KokubuT. Mizuuchi
作者单位: 1Institute of Advanced Energy, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
2National Institute for Fusion Science, Oroshi-cho 322-6, Toki, Gihu 509-5293, Japan
3Laboratorio Nacional de Fusión-CIEMAT, Av. Complutense 40. 28040, Madrid, Spain
4Graduate School of Energy Science, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
5Max-Planck-Institut für Plasmaphysik, EURATOM Association, Teilinstitut Greifswald, Germany
6Graduate School of Science, Furo-cho, Chikusa-ku, Nagoya, 464-8602, Japan
刊名: Nuclear Fusion, 2017, Vol.57 (12)
来源数据库: Institute of Physics Journal
DOI: 10.1088/1741-4326/aa8f04
原始语种摘要: Experiments of suppressing fast-ion-driven MHD instabilities such as energetic particle modes (EPMs) and global Alfvén eigenmodes (GAEs) have been made using a second harmonic x-mode electron cyclotron heating and current drive (ECCD) in the helical-axis heliotron device, Heliotron J. ECCD experiments show that the GAEs destabilized by fast ions of neutral beam injection with the observed frequency around 140 kHz are fully stabilized, and the EPMs with the observed frequency around 90 kHz are suppressed when the EC-driven plasma current flowing in the counter direction reaches approximately 0.7 kA. The low magnetic shear under the vacuum condition is modified into positive magnetic shear when counter-ECCD is applied, and the amplitude of GAEs and EPMs decreases with an increase in...
全文获取路径: IOP 

  • driven 从动的
  • current 
  • cyclotron 回旋加速器
  • counter 计数器
  • continuum 群体连续体
  • calculation 计算
  • device 装置
  • MHD Movable-Head Disc
  • amplitude 振幅
  • shear 切变