Speaker
Dr
Xiang Zhu
(Institute of Plasma Physics, Chinese Academic of Sciences)
Description
A novel method has been developed to improve the accuracy of safety factor (q) profile by combining the polarimeter/interferometer (POINT) measurements with the external magnetic measurements on the EAST tokamak. The POINT system, measuring the accurate line-integrated electron density and Faraday rotation angle, provides the magnetic field information inside the plasma. By adding these data to the equilibrium confinement, the results from POINT measurements show a difference with the original equilibrium and the difference becomes larger from boundary to core of the plasma. This correction process makes up for the deficiency of magnetic measurements, the details of the correction process are specified, which bypass the equilibrium fit (EFIT) code. Results with and without these corrections are presented, comparisons of the corrected results and experimental results are also shown and they are found agree well with each other. The feasibility and reliability of the correction process are also discussed in this paper.
Primary author
Dr
Xiang Zhu
(Institute of Plasma Physics, Chinese Academic of Sciences)
Co-authors
Prof.
Haiqing Liu
(Institute of Plasma Physics, Chinese Academic of Sciences)
Prof.
Long Zeng
(Institute of Plasma Physics, Chinese Academic of Sciences)
Dr
Weiming Li
(Institute of Plasma Physics, Chinese Academic of Sciences)
Prof.
Xiang Gao
(Institute of Plasma Physics, Chinese Academic of Sciences)
Prof.
Yinxian Jie
(Institute of Plasma Physics, Chinese Academic of Sciences)
Dr
Zhiyong Zou
(Institute of Plasma Physics, Chinese Academic of Sciences)
