The Tore Supra ITER like ICRF antenna prototype

Journal Article · Fri Sep 28 04:00:00 EDT 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2800456· OSTI ID:21032738

Vulliez, K; Agarici, G; Argouarch, A; Beaumont, B; Becoulet, A; Berger-by, G; Bosia, G; Bremond, S; Colas, L; Lombard, G; Millon, L; Mollard, P; Hoang, G T; Volpe, D ^[1]

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1. Association EURATOM-CEA, CEA/DSM/DRFC, CEA Cadarache, F-13108 St. Paul lez Durance (France)

In the framework of the ICRH development led at CEA Cadarache, a project of a prototype antenna based on the electrical layout foreseen for the ITER IC launcher has been initiated. First experiments have been performed on Tore Supra in 2004. Pulses of 500 kW lasting up to 6s have been achieved. The importance of the coupling effect between straps has been revealed during these experiments, and thus the need for an active control system of the current phasing between them. Despite the short experimental campaign terminated by the failure of the matching components due to undetected arcs, the load tolerant properties of such a circuit have been observed.Since, the prototype antenna has been repaired, reassembled and enhanced accordingly to the fruitful lessons harvested. The RF circuit was improved, corona rings were added on the capacitor poles and localized 'sharp' edges were rounded to increase the voltage standoff capability. To reduce the toroidal coupling between adjacent straps, a thick poloidal septum was added on the Faraday screen, thus easing the tuning of the launcher. Another major improvement was the development and the integration of current probes on each of the four straps. This paper reports on: the launcher mechanical enhancements, the recent results obtained in 2007 and the experimental program planned on Tore Supra.

• OSTI ID: 21032738
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 933; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANTENNAS
CAPACITORS
CEA CADARACHE
CONTROL SYSTEMS
COUPLING
ELECTRIC POTENTIAL
FAILURES
ICR HEATING
ION CYCLOTRON-RESONANCE
ITER TOKAMAK
PLASMA
PULSES
RF SYSTEMS
TORE SUPRA TOKAMAK