Conceptual design of a modular EC heating system for EU-DEMO
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Published:2024-08-14
Issue:10
Volume:64
Page:106003
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ISSN:0029-5515
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Container-title:Nuclear Fusion
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language:
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Short-container-title:Nucl. Fusion
Author:
Bruschi AlessandroORCID, Hogge Jean-Philippe, Jelonnek John, Strauss Dirk, Wu ChuanrenORCID, Aiello Gaetano, Avramidis KostasORCID, Baiocchi BenedettaORCID, Birlan Daniel, Chavan René, Chelis IoannisORCID, Clement Arnaud, Collaku Aldo, Crisinel Fabien, Difonzo Rosa, Ell Benjamin, Fanale Francesco, Fanelli Pierluigi, Figini LorenzoORCID, Gajetti Eleonora, Gantenbein Gerd, Garavaglia Saul, Goodman Timothy P.ORCID, Illy Stefan, Ioannidis ZisisORCID, Jin Jambo, Latsas George, Marraco Borderas Cinta L., Marsen Stefan, Moro Alessandro, Noël Marc, Peponis Dimitrios, Pinna Tonio, Platania Paola, Rispoli Natale, Ruess Tobias, Rzesnicki Tomasz, Salvitti AlessandraORCID, Savoldi LauraORCID, Scherer Theo, Schreck Sabine, Simonetto Alessandro, Spaeh Peter, Stanculovic Sebastian, Stange Torsten, Thumm Manfred, Tigelis Ioannis, Tsironis ChristosORCID, Wagner Dietmar, Xydou Anastasia
Abstract
Abstract
The European DEMO (EU-DEMO) reactor studies within EUROfusion aim to develop a fusion power plant concept. The large tokamak device needs an auxiliary heating power which, at the present stage, is provided by the Electron Cyclotron (EC) heating system with up to 130 MW foreseen to reach different regions of plasma for heating, suppression of instabilities and the possibility to support ramp-up and ramp-down phases. The present conceptual design of the system is based on 2 MW coaxial-cavity gyrotron sources, a transmission line (TL) using both circular corrugated waveguides and quasi-optical evacuated multi-beam TLs, and mirror antennas located in the Equatorial Port. In order to create a modular system, the sources are grouped in ‘clusters’, whose powers are combined in the quasi-optical TL, up to the tokamak building, where they are split and routed as single waveguides. In the launcher, they are combined together again on the launching mirrors, to save space for the apertures in the Breeding Blanket. The present EC heating system has a certain flexibility to adapt to changing design guidelines. The development status of the system is presented.
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