Development of a System for Materials Science Studies on the T-15MD Tokamak

Abstract

One of the main objectives pursued in carrying out materials science studies on the T-15MD tokamak is to insert samples, including large-scale ones, both for their long-term life cycle tests in the near-wall plasma areas and for studying the effect of impulse loads in the divertor section. A conceptual design of a system for carrying out materials science studies on the T-15MD tokamak has been developed at the Department of General Physics and Nuclear Fusion of the National Research University Moscow Power Engineering Institute. The system will open the possibility to carry out unique experiments on studying the state and composition of the divertor and first wall surfaces without the need to disturb the tokamak chamber vacuum and dismantle the components. It will be possible to perform such studies in the time intervals between tokamak pulses, which will make it possible to reveal changes on the divertor surface after each pulse and estimate correlations between the plasma parameters and changes on the first wall surface. In the attachment assembly, means are provided for cooling the mockups with both water flow and dispersed water-air flow. In addition, various diagnostic devices for monitoring the first wall and divertor surfaces can be installed on the attachment assembly.