Energy optimization of the EFCC power supply in DTT scenarios

The Divertor Tokamak Test facility comprises a sophisticated system designed to counteract Error Fields. The actual field correction demand will depend on the final characteristics of the assembled machine and, during operations, on the specific scenario instant. In this work, a comprehensive approach for the optimal design of the Error Field Correction Coil currents during the scenario is presented; the model is based on a circuit model of magnetic sources, including the correction coils, as well as Poloidal Field coils, Central Solenoid, plasma current and eddy currents. The available degrees of freedom are exploited to minimize the energy demand from correction coils power supplies while ensuring effective reduction of Error Fields.