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DESIGN ASPECTS AND RF CHARACTERIZATION OF ITER-RF-CVD-DIAMOND WINDOWS
Part of this work supported by the European Communities, was carried out within the framework of the European Fusion Development Agreement (EFDA).
https://doi.org/10.1142/9789812814647_0072Cited by:2 (Source: Crossref)
Abstract:
Ultra low mm-wave loss CVD diamond windows with loss tangent tan δ < 2 × 10-5 have been manufactured. The status of the window design is reviewed. The fabrication of the prototypical window unit is qualified for the selected diamond grades by a dielectric characterisation carried out by low power measurement (FZK). The high power RF performance is quantified by measurements (IR imaging during high power microwave loading) at the 170 GHz/1 MW gyrotron of JAEA and by investigating arcing processes. For this purpose, window assemblies (steel/copper/diamond) adapted to dedicated waveguides are used.
