[Table of Contents]

Plasma and Fusion Research

Volume 2, S1031 (2007)

Regular Articles

Imaging Meso-Scale Structures in TEXTOR with 2D-ECE
I. G. J. CLASSEN, R. J. E. JASPERS, H. K. PARK1), G. W. SPAKMAN, M. J. VAN der POL, C. W. DOMIER2), A. J. H. DONNE, N. C. LUHMANN Jr2), E. WESTERHOF, M. W. JAKUBOWSKI3) and the TEXTOR team3)
FOM Institute for Plasma Physics Rijnhuizen, Association Euratom-FOM, Partner in the Trilateral Euregio Cluster Nieuwegein, Netherlands
1)
Princeton Plasma Physics Laboratory, Princeton, New Jersey, U.S.A
2)
University of California at Davis, Dept. of Applied Science, Davis, California, U.S.A
3)
Forschungszentrum Jülich, Institut für Plasmaphysik, Association EURATOM-FZJ, Partner in the Trilateral Euregio Cluster, D-52425 Jülich,Germany
(Received 1 December 2006 / Accepted 3 March 2007 / Published 20 November 2007)

Abstract

The detection and control of instabilities in a tokamak is one of the exciting challenges in fusion research on the way to a reactor. Thanks to a combination of an innovative 2D temperature imaging technique (ECEI), a versatile ECRH/ECCD system and a unique possibility to externally induce tearing modes in the plasma, TEXTOR is able to make pioneering contributions in this field. This paper focuses on two meso-scale phenomena in tokamaks: m = 2 tearing modes and magnetic structures in the stochastic boundary. In these cases the 2D-ECEI diagnostic can resolve features not attainable before. In addition the possibility to use the diagnostic for fluctuation measurements is addressed.

Keywords

Electron cyclotron emission, plasma diagnostic, imaging, magnetic island, fluctuations, suppression, stochastic fields, electron cyclotron heating, tearing mode

DOI: 10.1585/pfr.2.S1031

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References

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This paper may be cited as follows:

I. G. J. CLASSEN, R. J. E. JASPERS, H. K. PARK, G. W. SPAKMAN, M. J. VAN der POL, C. W. DOMIER, A. J. H. DONNE, N. C. LUHMANN Jr, E. WESTERHOF, M. W. JAKUBOWSKI and the TEXTOR team, Plasma Fusion Res. 2, S1031 (2007).