F. Durodié P. Dumortier M. Vrancken A. Messiaen R. Bamber D. Hancock S. Huygen D. Lockley F. Louche R. Maggiora D. Milanesio M. P. S. Nightingale M. Shannon P. Tigwell M. Van Schoor M. Vervier D. Wilson K. Winkler Cycle Team
ITER’s Ion Cyclotron Range of Frequencies (ICRF) system [Lamalle et al., Fusion Eng. Des. 88, 517–520 (2013)] comprises two antenna launchers designed by CYCLE (a consortium of European associations listed in the author affiliations above) on behalf of ITER Organisation (IO), each inserted as a Port Plug (PP) into one of ITER’s Vacuum Vessel …Published
A. Argouarch R. Bamber B. Beaumont J.-M. Bernard J. M. Delaplanche F. Durodié J. C. Hatchressian P. Lamalle G. Lombard K. Nicholls J. C. Patterlini M. Shannon D. Thouvenin P. Tigwell R. Volpe K. Vulliez
In the framework of the Ion Cyclotron (IC) antenna design, ITER Organization requested qualification tests on sliding Radio-Frequency (RF) contacts, to verify that these contacts (quality class 1) are designed appropriately to guarantee a sufficient operational life time. These RF contacts will be integrated into the antenna structure at different …Published
F. Durodié M. Vrancken R. Bamber L. Colas P. Dumortier D. Hancock S. Huygen D. Lockley F. Louche R. Maggiora D. Milanesio A. Messiaen M. P. S. Nightingale M. Shannon P. Tigwell M. Van Schoor D. Wilson K. Winkler Cycle Team
ITER’s Ion Cyclotron Range of Frequencies (ICRF) system  comprises two antenna launchers designed by CYCLE (a consortium of European associations listed in the author affiliations above) on behalf F4E for the 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 …Published
David Hancock Mark Shannon Bertrand Beaumont Pierre Dumortier Frederic Durodie Volodymyr Kyrytsya Fabrice Louche Robert Mckinley Keith Nicholls The Cycle Team
In the ITER equatorial ports containing ICRH antennas, parasitic electrical resonances can be excited in the nominal 20 mm clearance gap between the port walls and the plug contained within it. RF calculations have established that these resonances can be effectively mitigated by a series of suitably located electrically conducting contacts between…Published
I Monakhov M Graham T Blackman S Dowson F Durodie P Jacquet J Lehmann M-L Mayoral M P S Nightingale C Noble H Sheikh M Vrancken A Walden A Whitehurst E Wooldridge JET-EFDA Contributors
A load-tolerant External Conjugate-T (ECT) impedance matching system for two A2 Ion Cyclotron Resonance Heating (ICRH) antennas has been successfully put into operation at JET. The system allows continuous injection of the RF power into plasma in the presence of strong antenna loading perturbations caused by Edge Localized Modes (ELMs). Reliable EC…Published
M. Vrancken F. Durodié P. Dumortier D. Lockley F. Louche et al.
The ITER ICRF antenna’s coupled power to plasma is determined not only by the plasma scrape-off layer profiles and shaping of the front strap array, but also by assuring optimal excitation of the array by the overall layout of the feed network and the detailed shaping of the RF components therein. This paper describes the optimization of the feed…Published
D. Hancock M. Nightingale R. Bamber N. Dalton F. Durodie et al.
The CYCLE consortium has been designing the ITER ICRF antenna since March 2010, supported by an F4E grant. Following a brief introduction to the consortium, this paper: describes the present status and layout of the design; highlights the key mechanical engineering features; shows the expected impact of cooling and radiation issues on the design an…Published
P. Jacquet G. Bergerby V. Bobkov T. Blackman F. Durodié et al.
A Sub-Harmonic Arc Detection (SHAD) system has been installed on the transmission lines feeding the JET ICRF ITER-like-Antenna (ILA). Along with the commissioning of SHAD, extensive measurements of the RF field in the transmission lines were carried-out using fast sampling (125 Mb/s) oscilloscopes. The system is described, and the SHAD ability to d…Published
D. Van Eester E. Lerche A. Argouarch T. Blackman F. Durodie et al.
A set of simulation/interpretation tools based on transmission line theory and on the RF model developed by M. Vrancken  has been developed to study the ITER-like Antenna (ILA) at JET. For given tuning element settings, the unique solution of the equations governing the ILA circuit requires solving a system of coupled linear equations relating t…Published