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Abstract

LH is considered to be used in ITER-FEAT steady-state scenario thanks to its highest current drive efficiency in the plasma outer part. The design of a 5 GHz, 20 MW CW LH system has been realised. That relies on a transmitter of 24 1-MW klystrons, and a circular oversized 60-m long transmission line feeding an antenna, based on the passive active multijunction concept. In order to have a high reliability, the power density is limited to 33 MW per square metre. After the system description, the results of different studies are given: RF computation, launcher coupling properties, thermal analysis, mechanical stress caused by disruption, neutron activation, acceleration of electrons in the antenna near field.

Additional information

Authors: MIRIZZI F, ENEA, Frascati, Rome (IT);TUCCILLO A A, ENEA, Frascati, Rome (IT);KUZIKOV S, Institute of Applied Physics, Nizhny Novgorod (RU);WASASTERJNA F, VTT Processes, VTT (FI);BIBET P, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);BOSIA P, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);DOCEUL L, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);K. RANTAMÄKI K., VTT Processes, VTT (FI)
Bibliographic Reference: An article published in: Fusion Engineering and Design, Volume 69, Issues 1-4, September 2003, Pages 525-529 (22nd Symposium on Fusion Technology)
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://dx.doi.org/10.1016/S0920-3796%2803%2900095-4
Record Number: 200317051 / Last updated on: 2003-10-29
Category: PUBLICATION
Original language: en
Available languages: en