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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 18: Diamond II + Poster

KFM 18.3: Vortrag

Mittwoch, 14. März 2018, 15:50–16:10, E 124

Diamond Window Diagnostics For Fusion Applications — •Francesco Mazzocchi, Gaetano Aiello, Dirk Strauss, Andreas Meier, and Theo Scherer — KIT IAM AWP Hermann von Helmholtz Platz 1 76344 Eggenstein Leopoldshafen

The future nuclear fusion power plants will require Electron Cyclotron Heating and Current Drive (ECH&CD) systems to heat up and stabilize the plasma inside the vacuum vessel. One of the key components of such systems is the Chemical Vapor Deposition (CVD) diamond window. In this work, the latest assessment study on a set of diagnostics to be part of the window assembly is shown. The required diagnostics include arc and tritium detection, microwave stray radiation (perpendicular to the main beam and generated by cracks in the windows), pressure and disk temperature measurements. The devices must have a compact, simple and flexible layout, with a rugged design, to maximize serviceability and durability. To accommodate the diagnostics previously mentioned, a new design for the window housing was developed. To validate the concepts, a test bench was developed to carry out measurements under conditions similar to the operative ones.