Simulations of Control, Perturbation, Displacement and Disruption in Highly Elongated Tokamak Plasmas

摘要: The control and evolution of highly elongated tokamak plasmas with large growth rates are simulated the axisymmetric, resistive MHD code TSC in geometry TCV tokamak. Simulations show that pressure perturbations such as sawteeth externally programmed displacements create initial velocity addition to equilibrium changes. It is demonstrated these may be stabilized by low power, rapid response coils inside passively stabilizing vacuum vessel, together slower shaping outside vessel. This method works because vessel do not have a flux penetration delay. Vertical disruption induced voltages forces on investigated establish coil design requirements. A model proposed used estimate additional vertical force due poloidal currents, which comparable from toroidal currents.