Three dimensional MHD analysis on J-TEXT tokamak with MIPS
Updated Time：2021-06-29 14:19:12
The nonlinear, 3D magnetohydrodynamics (MHD) code Infrastructure for Plasma Simulation (MIPS)  is used to study tokamak plasma on J-TEXT for the first time. MIPS’s results can be obtained by starting with a stable MHD equilibrium from HINT  which provides 3D configuration rather than 2D equilibrium mixed external magnetic perturbation without internal balance between the pressure of plasma and electromagnetic forces. Sawtooth oscillations  are one of most important MHD instability in tokamak plasma. They affect the confinement of core plasma or even trigger disruption in some situations. Sawtooth research on J-TEXT have rich results. Here, sawtooth crash has been reproduced and analyzed for benchmark of MIPS on tokamak. X-point of island in core increases pressure gradient and helps heat transport during crash. Results are contrasted and compared with experiences and other simulation codes.
MIPS;3D equilibrium;MHD instability;sawtooth crash