Plasma-Facing Components in the TRT Project: A Design, Materials, and Technologies

The paper discusses the main issues that are resolved when designing plasma-facing components in the TRT project—this is the clarification of the functionality of various components, their arrangement in the vacuum vessel and design, and choice of materials of a high-heat flux multilayer structure and technologies for creating such a structure. The choice of armour material is the key issue, since not only the engineering parameters of the components but also the plasma parameters depend on the decision. The design and materials of the advanced cooling heat-sink structure must ensure long-term and reliable operation of the component at peak heat flux in specified environmental conditions. At the same time, taking into account the complexity and duration of construction, commissioning, and achievement of project parameters for any large-scale tokamak such as the TRT, it is reasonable to use a stepwise approach to equipping the tokamak with plasma-facing components with different materials and designs.