Advances of reflectometry on Tore-Supra : from edge density profile to core density fluctuations
A new generation of broadband reflectometers based on solid-state components has been installed on Tore-Supra. With reflectometers covering the range 50 to 155 GHz, the whole plasma can be scanned. Two X-mode reflectometers (V and W band) are dedicated to density profile measurements. Diagnostics are operated routinely with an automatic algorithm to reconstruct the density profile. A fast acquisition mode is available to study short time evolution. For turbulence and transport studies, a third reflectometer operating between 105 and 155 GHz measures density fluctuations in the plasma centre. Sensitive to large scales, it can retrieve density perturbation due to MHD modes or broadband turbulence. Lastly, a Doppler reflectometer, based on back scattering, is being installed for measuring the poloidal rotation and fluctuations amplitude at higher wave numbers.
Bibliographic Reference: An oral paper given at: 11th International Symposium on Laser-Aided Plasma Diagnostics (LAPD11) Organised by: Laboratoire de Spectrométrie Physique Held at: Les Houches, France, Sep.28 - Oct.2, 2003
Availability: Available from Association EURATOM-CEA, Département de Recherches sur la Fusion Contrôlée, CEA Cadarache, F-13108 St Paul-Lez-Durance, France Tel:+33-4-42257001; Fax:+33-4-42256421 E-mail: email@example.com
Record Number: 200317068 / Last updated on: 2003-10-27
Original language: en
Available languages: en