Community Research and Development Information Service - CORDIS

Abstract

For ECRH (Electron Cyclotron Resonance Heating) and current drive experiments on the tokamak Tore Supra, gyrotrons have been developed thanks to a collaboration between TED (Thales Electron Devices), Association EURATOM-Confederation Suisse, Association EURATOM-FZK and Association EURATOM-CEA.

Limitations on pulse length (about 110 s) have been observed on the first series gyrotron during tests in Caderache. These limitations have been attributed to inadequate cooling and subsequent overheating of internal components in the tube. Moreover, the geometry of the launcher seems to be at the origin of spurious oscillations inside and at the outputof the gyrotron, possibly leading to degraded performances.

To improve the gyrotron, new studies involving the same partners have been undertaken and a new tube has just been manufactured by TED, with the main modifications being the introduction of a new cooling system and a launcher with a different geometry. The factory acceptance tests were completed in January 2004; the gyrotron is now installed on the Caderach test bed where long pulse tests (up to 600 s) will begin in mid June.

Additional information

Authors: DARBOS C, Departement de Recherches sur la Fusion Controlee, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);BOUQUEY F, Departement de Recherches sur la Fusion Controlee, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);CLARY J, Departement de Recherches sur la Fusion Controlee, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);LENNHOLM M, Departement de Recherches sur la Fusion Controlee, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);MAGNE R, Departement de Recherches sur la Fusion Controlee, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);ALBERTI S, Centre de Recherches en Physique des Plasmas, Association EURATOM-Confederation Suisse, Ecole Polytechnique Federale de Lausanne (CH);HOGGE J, Centre de Recherches en Physique des Plasmas, Association EURATOM-Confederation Suisse, Ecole Polytechnique Federale de Lausanne (CH);BARIOU D, Thales Electron Devices, Velizy-Villacoublay (FR);LIEVIN C, Thales Electron Devices, Velizy-Villacoublay (FR);ARNOLD A, Thales Electron Devices, Velizy-Villacoublay (FR);THUMM M, Thales Electron Devices, Velizy-Villacoublay (FR)
Bibliographic Reference: An oral paper given at: 13th Joint Workshop on ECE and ECRH Held in: Nizhny Novgorod, Russia
Availability: Available from Association EURATOM-CEA, Departement de Recherches sur la Fusion Controlee, 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: 200417585 / Last updated on: 2004-06-28
Category: PUBLICATION
Original language: en
Available languages: en