Plasma equilibrium response modelling and validation on JT-60U

摘要: A systematic procedure to identify the plasma equilibrium response poloidal field coil voltages has been applied JT-60U tokamak. The required was predicted with a high accuracy by state-space model derived from first principles. ab initio derivation of linearized models is re-examined using an approach standard in analytical mechanics. symmetric formulation naturally obtained, removing previous weakness such models. RZIP, rigid current distribution model, re-derived this and compared new experimental data obtained Ohmic neutral beam injection discharges In order remove any bias comparison between modelled measured responses, electromagnetic without carefully tuned against data, parametric approach, for which different cost functions quantifying agreement were explored. This additionally provides indications various parameters are known, ordering physical effects. Having taken these precautions when tuning plasmaless empirical estimate self-inductance, resistance its radial derivative could be established initial assumptions. Off-line controller presented as example improvements might response.