I-mode investigation on the Experimental Advanced Superconducting Tokamak
X. Feng, A. D. Liu, C. Zhou, Z. X. Liu, M. Y. Wang, G. Zhuang, X. L. Zou, T. B. Wang, Y. Z. Zhang, J. L. Xie, H. Q. Liu, T. Zhang, Y. Liu, Y. M. Duan, L. Q. Hu,… 展开作者
X. Feng, A. D. Liu, C. Zhou, Z. X. Liu, M. Y. Wang, G. Zhuang, X. L. Zou, T. B. Wang, Y. Z. Zhang, J. L. Xie, H. Q. Liu, T. Zhang, Y. Liu, Y. M. Duan, L. Q. Hu, G. H. Hu, D. F. Kong, S. X. Wang, H. L. Zhao, Y. Y. Li, L. M. Shao, T. Y. Xia, W. X. Ding, T. Lan, H. Li, W. Z. Mao, W. D. Liu, X. Gao, J. G. Li, S. B. Zhang, X. H. Zhang, Z. Y. Liu, C. M. Qu, S. Zhang, J. Zhang, J. X. Ji, H. R. Fan, X. M. Zhong
By analyzing large quantities of discharges in the unfavorable ion $ \vec B\times \nabla B $ drift direction, the I-mode operation has been confirmed in EAST tokamak. During the L-mode to I-mode transition, the energy confinement has a prominent improvement by the formation of a high-temperature edge pedestal, while the particle confinement remains almost identical to that in the L-mode. Similar with the I-mode observation on other devices, the $ E_r $ profiles obtained by the eight-channel Doppler backscattering system (DBS8)\cite{J.Q.Hu} show a deeper edge $ E_r $ well in the I-mode than that in the L-mode. And a weak coherent mode (WCM) with the frequency range of 40-150 kHz is observed at the edge plasma with the radial extend of about 2-3 cm. WCM could be observed in both density fluctuation and radial electric field fluctuation, and the bicoherence analyses showed significant couplings between WCM and high frequency turbulence, implying that the $ E_r $ fluctuation and the caused flow shear from WCM should play an important role during I-mode. In addition, a low-frequency oscillation with a frequency range of 5-10 kHz is always accompanied with WCM, where GAM intensity is decreased or disappeared. Many evidences show that the a low-frequency oscillation may be a novel kind of limited cycle oscillation but further investigations are needed to explain the new properties such as the harmonics and obvious magnetical perturbations.
Spatial distributions of Balmer series emissions in divertor plasmas with tungsten targets in different magnetic configurations on the EAST superconducting tokamak
Resistive wall mode induced disruptions in an advanced tokamak
State Key Laboratory of Advanced Electromagnetic Technology（先进电磁技术国家重点实验室）；International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics（磁约束聚变与等离子体物理国际联合研究中心）
A space-resolved visible spectrometer system using compact endoscopic optics for full vertical profile measurement of impurity line emissions in superconducting EAST tokamak
A Rapid Integrated Tokamak Modelling Approach for Coupled Profile and Equilibrium Evolution
Key Laboratory of Materials Modification by Beams of the Ministry of Education, School of Physics, Dalian University of Technology（大连理工大学物理学院材料束改性教育部重点实验室）；Beijing VeloAlpha Technology Co., Ltd.（北京维洛阿尔法科技有限公司）
Nitrogen-induced ELM suppression and confinement improvement in the EAST tokamak with a full metal wall
School of the Gifted Young, University of Science and Technology of China（中国科学技术大学少年班）；Institute of Plasma Physics, Chinese Academy of Sciences（中国科学院等离子体物理研究所）；School of Nuclear Science and Technology, University of Science and Technology of China（中国科学技术大学核科学与技术学院）；Southwestern Institute of Physics（西南物理研究所）
