Design of the In-Vessel Magnetic Coils for Generating a Rotating Resonant Magnetic Perturbation on the J-TEXT Tokamak Plasma

摘要

To investigate the interactions between external resonant magnetic perturbations (RMPs) and a tokamak plasma, a set of saddle coils are designed for the J-TEXT. A method for designing RMP field structure based on Fourier transform is used in this paper. Since the coils will be mounted inside the vacuum vessel where the pressure is about $10^{-7} {rm Pa}$, an airproof multi-layer structure is adopted to avoid contaminating the vacuum environment. Besides, stress and thermal analysis and the AC response of magnetic field are also given.