Community Research and Development Information Service - CORDIS

Abstract

An ECRH (Electron Cyclotron Resonance Heating) system capable of delivering 2.4 MW CW is presently under construction at CEA (Commissariat à l�Energie Atomique) Cadarache, for the Tore Supra experiment, to provide plasma heating and current drive by Electron Cyclotron Resonance interaction. All the auxiliary equipment - Power Supplies, Control and Protection systems, Cryogenic and Vacuum Systems - has already been installed for the complete plant but only two gyrotrons (among 6) are at present in place and connected to the Tore Supra Tokamak. The plant has been tested on dummy loads, and then used for plasma operation for several short experimental campaigns from 2001 to 2003.
Due to the limitations observed on the first series tube which achieved 300 kW output power for 110 s, a new study carried out in a collaboration between TED (Thales Electron Devices, formerly Thomson Tubes Electroniques), the Association Euratom-CEA and the Association Euratom-Confédération Suisse has led to the construction of a new modified gyrotron.
In order to facilitate the acceptance tests of this new - and subsequent - gyrotrons and to make the tests independent of Tore Supra experiments, one of the six places already prepared for the gyrotrons has been transformed into a dedicated test bed. The new gyrotron, with a new launcher profile and a better cooling system is now installed in the test bed in Cadarache. A clear improvement in the time required to condition the tube has been observed. On the other hand bad mode purity in the output beam has resulted in the need to implement a cooling system for the waveguides transmitting the power to the dummy load. The gyrotron tests have been temporarily suspended while a new system for the automatic filling of the cryostats with liquid nitrogen and helium is being installed.

Additional information

Authors: DARBOS C, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);CLARY J, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);JUNG M, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);MAGNE R, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);LENNHOLM M, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);LAMBERT R, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);ROUX D, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);TRAISNEL E, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);BOUQUEY F, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: An oral paper given at: Third IAEA Technical Meeting on �ECRH Physics and Technology for ITER" Organised by: Centro di Cultura Scientifica "Alessandro Volta", Como (IT) Held at: Società del Casino, Como, Italy
Availability: Available from Association EURATOM-CEA, Département de Recherches sur la Fusion Contrôlée, CEA Cadarache, F-13108 St Paul-Lez-Durance, France Tel: (+33) 4 42 25 70 01; Fax: (+33) 4 42 25 64 21 E-mail: dirdrfc@drfc.cad.cea.fr
Record Number: 200518345 / Last updated on: 2005-09-26
Category: PUBLICATION
Original language: en
Available languages: en