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Diamond Window Technology for Electron Cyclotron Heating and Current Drive: State of the Art

Aiello, G. ORCID iD icon 1; Scherer, T. 1; Avramidis, K. 2; Casal, N.; Franke, T.; Gagliardi, M.; Gantenbein, G. 2; Henderson, M.; Jelonnek, J. 2; Meier, A. 1; Saibene, G.; Schreck, S. ORCID iD icon 1; Strauss, D. 1; Thumm, M. 2; Tran, M. Q.; Wild, C.; Woerner, E.
1 Karlsruher Institut für Technologie (KIT)
2 Institut für Hochleistungsimpuls- und Mikrowellentechnik (IHM), Karlsruher Institut für Technologie (KIT)


Nuclear fusion power plants require electron cyclotron (EC) heating and current drive (H&CD) systems for plasma heating and stabilization. High-power microwave beams between 1 and 2 MW generated by gyrotrons propagate in a dedicated waveguide transmission system to reach the plasma at specific locations. Key components in this transmission system are the chemical vapor deposition diamond windows on both the torus and gyrotron sides of the reactor as they allow transmission of high-power beams while acting as confinement and/or vacuum boundaries. Diamond windows consist of a polycrystalline diamond disk integrated in a metallic housing. In the conventional configuration, there is one disk perpendicular to the beam propagation direction. A steering mechanism is then used to deploy the fixed frequency beam at different locations in the plasma. This is, for instance, the configuration used in the ITER EC H&CD system. Movable parts close to the plasma will be problematic for the lifetime of launchers in future fusion reactors like the DEMOnstration nuclear fusion reactor (DEMO) because of the higher heat loads and neutron fluxes. Therefore, one of the alternative concepts is to deploy the beams directly at the desired resonant magnetic flux surface by frequency tuning gyrotrons. ... mehr

Postprint §
DOI: 10.5445/IR/1000099495
Veröffentlicht am 15.02.2022
DOI: 10.1080/15361055.2019.1643690
Zitationen: 11
Web of Science
Zitationen: 9
Zitationen: 13
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP)
Institut für Hochleistungsimpuls- und Mikrowellentechnik (IHM)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2019
Sprache Englisch
Identifikator ISSN: 0748-1896, 1536-1055, 1943-7641
KITopen-ID: 1000099495
HGF-Programm 31.03.02 (POF III, LK 01) Plasma Heizsysteme
Weitere HGF-Programme 31.03.05 (POF III, LK 01) Port- und Plant Engineering
Erschienen in Fusion science and technology
Verlag Taylor and Francis
Band 75
Heft 7
Seiten 719-729
Projektinformation EUROfusion_H2020 (EU, H2020, 633053)
Nachgewiesen in Web of Science
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