Studies on the requirements of the power supply system for the resistive-wall-mode control in JT-60SA

► The new design of the JT-60SA coil system for RWM control requires high dynamics. ► The electrical characterization of coils and feeders is performed with FE analyses. ► Voltage induced in the coils in case of fast plasma transients is quantified. ► Possible connections among PS and coils are analyzed to optimize the system. ► Reasonable voltage margins to cope with load uncertainties are considered.