Plasma turbulence measured by fast sweep reflectometry on TORE SUPRAReport as inadecuate

Plasma turbulence measured by fast sweep reflectometry on TORE SUPRA - Download this document for free, or read online. Document in PDF available to download.

1 Assoc. Euratom-CEA sur la fusion 2 LPMIA - Physique des milieux ionisés et applications 3 PIIM - Physique des interactions ioniques et moléculaires

Abstract : Traditionally devoted to electron density profile measurement we show that fast frequency sweeping reflectometry technique can bring valuable and innovative measurements onto plasma turbulence. While fast frequency sweeping technique is traditionally devoted to electron density radial profile measurements we show in this paper how we can handle the fluctuations of the reflected signal to recover plasma density fluctuation measurements with a high spatial and temporal resolution. Large size turbulence related to magneto-hydrodynamic MHD activity and the associated magnetic islands can be detected. The radial profile of the micro-turbulence, which is responsible for plasma anomalous transport processes, is experimentally determined through the fluctuation of the reflected phase signal.

Author: F. Clairet - L. Vermare - S. Heuraux - G. Leclert -



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