Abstract
Since 2014 under the umbrella of EUROfusion Consortium the Work Package Heating and Current Drive (WPHCD) is performing the engineering design and R&D for the electron cyclotron (EC), ion cyclotron and neutral beam systems of the future fusion power plant DEMO. This presentation covers the activities performed in the last two years on the EC system conceptual design, as part of the WPHCD, focusing on launchers, transmission lines, system reliability and architecture.
Highlights
Since 2014 under the umbrella of EUROfusion Consortium the Work Package Heating and Current Drive (WPHCD) is performing the engineering design and R&D for the electron cyclotron (EC), ion cyclotron and neutral beam systems of the future fusion power plant Demonstration Fusion Power Plant (DEMO)
The primary objective is to deliver a feasible concept design of the EC system fully integrated in the machine design, satisfying the stringent safety and Remote Maintenance (RM) criteria and minimizing the impact on the Tritium Breeding Ratio (TBR)
During the burning plasma the EC system is required for MHD control: 10-15 MW of EC power is dedicated for Neoclassical Tearing Mode (NTM) and sawtooth control
Summary
A launcher with a sufficient flexibility and without movable parts in the proximity of plasma and blanket is required to deliver the required amount of power at different deposition locations. Starting with the apertures calculated at the blanket level, the impact on the TBR for the five ELs is 'TBR of ~0.004 (~0.313 %) and for the two VLs ~0.002 (0.166 %). These values look promising to reach the target value of 1.1 and with safety margins
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