Speaker
Mr
Hui Lian
(Institute of Plasma Physics, Chinese Academy of Sciences)
Description
Plasma equilibrium reconstruction plays an important role in the tokamak plasma research. With a high temporal and spatial resolution, the POlarimeter-INTerferometer (POINT) system on EAST has provided effective measurements for both the 60 s H-mode operation and $10^2$ s long pulse discharge. Based on internal Faraday rotation measurements provided by the POINT system, the equilibrium reconstruction with a more accurate current profile constraint has been demonstrated successfully on EAST. Experimental diagnostics on EAST also provided the kinetic equilibrium which includes the information of current profile, safety factor profile and pressure profile. Take the pressure information from kinetic EFIT into the equilibrium reconstruction with Faraday rotation constraint, the new equilibrium reconstruction not only provides a more accurate internal current profile but also contains other experimental diagnostics information. It is found that the new equilibrium reconstruction shows a great consistent with sawtooth phenomena and includes the pedestal structure for H-mode plasma, which the magnetic reconstruction doesn’t satisfy. The new improved equilibrium reconstruction is greatly helpful to the future theoretical analysis.
Primary author
Mr
Hui Lian
(Institute of Plasma Physics, Chinese Academy of Sciences)
Co-authors
Prof.
Guo Qiang Li
(Institute of Plasma Physics, Chinese Academy of Sciences)
Dr
Hai Qing Liu
(Institute of Plasma Physics, Chinese Academy of Sciences)
Prof.
Jin Ping Qian
(Institute of Plasma Physics, Chinese Academy of Sciences)
Mr
Kai Li
(Institute of Plasma Physics, Chinese Academy of Sciences)
Dr
Long Zeng
(Institute of Plasma Physics, Chinese Academy of Sciences)
Prof.
Wei Xing Ding
(University of California, Los Angeles, California, USA)
Prof.
Yin Xian Jie
(Institute of Plasma Physics, Chinese Academy of Sciences)
Mr
zhiyong zou
(Institute of Plasma Physics, Chinese Academy of Sciences)
