Archivio Istituzionale della RicercaThe ITER Ion Cyclotron Range of Frequencies (ICRF) antenna's capacity to couple power to plasma is determined by the plasma Scrape-Off Layer (SOL) profile, shaping of the front strap array, layout of the Port Plug (PP) and detailed design of its RF components. The first two factors are taken into account by the Torino Polytechnic Ion Cyclotron Antenna (TOPICA) calculated strap array Scattering/Impedance 24-port (S24 × 24−/Z24 × 24−) matrices, while this paper deals with the optimisation of the PP layout and components. The RF modeling techniques are explained and used to maximise the coupled power under a set of constraints on RF quantities inside the PP. The total PP RF surface conductive and volumetric dielectric losses are calculated. The resulting S-parameters at the rear RF PP flanges are evaluated as input for the design of the pre-match, decoupling and matching network outside the PP. A discussion of the effect of errors on the PP excitation on the coupled power is also included.
RF optimisation of the port plug layout and performance assessment of the ITER ICRF antenna / M., Vrancken; F., Durodié; R., Bamber; N., Dalton; P., Dumortier; M., Graham; A., Horvat; D., Hancock; D., Lockley; F., Louche; Maggiora, Riccardo; A., Messiaen; Milanesio, Daniele; M. P. S., Nightingale; M., Shannon; P., Tigwell; M., Van Schoor; D., Wilson; K., Winkler; Cycle, Team. - In: FUSION ENGINEERING AND DESIGN. - ISSN 0920-3796. - STAMPA. - 88:(2013), pp. 940-944. (Intervento presentato al convegno 27th Symposium On Fusion Technology (SOFT-27) tenutosi a Liege, Belgium nel September 24-28, 2012) [10.1016/j.fusengdes.2013.02.162].
RF optimisation of the port plug layout and performance assessment of the ITER ICRF antenna
MAGGIORA, Riccardo;MILANESIO, DANIELE;
2013
Abstract
The ITER Ion Cyclotron Range of Frequencies (ICRF) antenna's capacity to couple power to plasma is determined by the plasma Scrape-Off Layer (SOL) profile, shaping of the front strap array, layout of the Port Plug (PP) and detailed design of its RF components. The first two factors are taken into account by the Torino Polytechnic Ion Cyclotron Antenna (TOPICA) calculated strap array Scattering/Impedance 24-port (S24 × 24−/Z24 × 24−) matrices, while this paper deals with the optimisation of the PP layout and components. The RF modeling techniques are explained and used to maximise the coupled power under a set of constraints on RF quantities inside the PP. The total PP RF surface conductive and volumetric dielectric losses are calculated. The resulting S-parameters at the rear RF PP flanges are evaluated as input for the design of the pre-match, decoupling and matching network outside the PP. A discussion of the effect of errors on the PP excitation on the coupled power is also included.
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https://hdl.handle.net/11583/2506464
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