ITER's Ion Cyclotron Range of Frequencies (ICRF) system comprises two antenna launchers designed by CYCLE (a consortium of European associations) on behalf of ITER Organisation (IO), each inserted as a Port Plug (PP) into one of ITER's Vacuum Vessel (VV) ports. Each launcher is an array of 4 toroidal by 6 poloidal RF current straps specified to couple up to 20 MW in total to the plasma in the frequency range of 40 to 55 MHz but limited to a maximum system voltage of 45 kV and limits on RF electric fields depending on their location and direction with respect to respectively the torus vacuum and the toroidal magnetic field. A crucial aspect of coupling ICRF power to plasmas is the knowledge of the plasma density profiles in the Scrape-Off-Layer (SOL) and the location of the RF current straps with respect to the SOL. The launcher layout and details were optimized and its performance estimated for a worst case SOL provided by the IO. The paper summarizes the estimated performance obtained within the operational parameter space specified by IO. Aspects of the RF grounding of the whole antenna PP to the VV port and the effect of the voids between the PP and the Blanket Shielding Modules (BSM) surrounding the antenna front are discussed.

Performance Assessment of the ITER ICRF Antenna / Durodiè, F.; Vrancken, M.; Bamber, R.; Dumortier, P.; Hancock, D.; Huygen, S.; Lockley, D.; Louche, F.; Maggiora, Riccardo; Milanesio, Daniele; Messiaen, A.; Nightingale, M.; Shannon, M.; Tigwell, P.; Van Schoor, M.; Wilson, D.; Winkler, K.. - ELETTRONICO. - ITR/P1-8:(2012). (Intervento presentato al convegno 24th IAEA Fusion Energy Conference tenutosi a San Diego, CA, USA nel 8-13 October 2012).

Performance Assessment of the ITER ICRF Antenna

MAGGIORA, Riccardo;MILANESIO, DANIELE;
2012

Abstract

ITER's Ion Cyclotron Range of Frequencies (ICRF) system comprises two antenna launchers designed by CYCLE (a consortium of European associations) on behalf of ITER Organisation (IO), each inserted as a Port Plug (PP) into one of ITER's Vacuum Vessel (VV) ports. Each launcher is an array of 4 toroidal by 6 poloidal RF current straps specified to couple up to 20 MW in total to the plasma in the frequency range of 40 to 55 MHz but limited to a maximum system voltage of 45 kV and limits on RF electric fields depending on their location and direction with respect to respectively the torus vacuum and the toroidal magnetic field. A crucial aspect of coupling ICRF power to plasmas is the knowledge of the plasma density profiles in the Scrape-Off-Layer (SOL) and the location of the RF current straps with respect to the SOL. The launcher layout and details were optimized and its performance estimated for a worst case SOL provided by the IO. The paper summarizes the estimated performance obtained within the operational parameter space specified by IO. Aspects of the RF grounding of the whole antenna PP to the VV port and the effect of the voids between the PP and the Blanket Shielding Modules (BSM) surrounding the antenna front are discussed.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2507546
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