Community Research and Development Information Service - CORDIS

Abstract

Tore Supra is equipped with two fast sweep 20mu s X-mode (FM-CW) reflectometers operating between 50-110GHz dedicated to density profile determination and a X-mode fixed frequency reflectometer operating between 105-155GHz for density fluctuations measurements. By operating the profile reflectometer in burst mode (5mu s dead time between two consecutive sweeps) we provide information on plasma fluctuations, such as MHD activity, up to 20kHz as well as a radial localization of the modes. The temporal evolution of the q = 1 rational surface during sawtooth crash activity has been recorded in the plasma centre with high spatial resolution. The observation of the associated MHD mode has been done with both reflectometers and the toroidal plasma rotation velocity has been determined from the phase shift between them.

Additional information

Authors: HEURAUX S, LPMI, CNRS 7040, Univ. Henri Poincare Nancy I, Vandoeuvre (FR);CLAIRET F, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);GABILLET F, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);SABOT R, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);SIRINELLI A, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);LECLERT G, LPIIM, UMR 6633 CNRS, Univ. de Provence, Facultée de St Jerome case 321, Marseille (FR);VERMARE L, 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: 15th Topical Conference on High-Temperature Plasma Diagnostics Organised by: General Atomics, San Diego (US) Held at: Hyatt Regency Islandia Hotel, San Diego(US)
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: 200417501 / Last updated on: 2004-05-10
Category: PUBLICATION
Original language: en
Available languages: en