RECENT UPGRADES OF THE ITER ECRH CVD TORUS DIAMOND WINDOW DESIGN AND INVESTIGATION OF DIELECTRIC DIAMOND PROPERTIES

摘要：

The ITER ECRH system requires the use of ultra low loss CVD diamond windows mounted in a system of metallic parts (copper/steel). These components, being part of the primary vacuum boundary, have the function of tritium confinement in the vacuum vessel of ITER. Experiments of the first prototype with a real non-Gaussian input beam profile (ca. 90％ Gauss content) show the influence of high frequency higher order modes (parasitic modes) introduced by excitation of oscillations in construction-conditioned small cavities in the window assembly 1,2. A new design with inserted waveguide structures is able to avoid the parasitic excitations by covering gaps in the metallic structure of the window housing. A matchable distance of the waveguides related to the window disk position allows in addition to reduce amplitudes of such modes. A continuation of the corrugation up to the ends of the inserted waveguides is a supplemental improvement in the window design. The new optimized window assembly design will be shown.

作者: T.A.SCHERER D.STRAUSS A.VACCARO G.AIELLO S.SCHRECK A.MEIER P.SP(A)H

作者单位: Karlsruhe Institute of Technology, Association KIT-EURATOM, D-76021 Karlsruhe Institute for Material Research I.Materials Technology Department

会议类型: 国际会议

会议名称: The 16th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating(第十六届电子回旋放射和电子回旋共振加热会议(EC-16)

会议地点: 三亚

会议语种:英文

页码: 396-400

在线出版日期: 2010-04-12（万方平台首次上网日期，不代表论文的发表时间）