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(EXP3/02) Neoclassical Tearing Mode Studies in JET

T. C. Hender1), D. N. Borba2), R. J. Buttery1), D. F. Howell1), G. T. A. Huysmans3), R. J. La Haye4), P. J. Lomas1), A. Martynov5), M. Mantsinen6), S. D. Pinches7), O. Sauter5), M. Zabiego3)
 
1) Euratom/UKAEA Fusion Association, Culham Science Centre, Abingdon, UK.
2) EFDA-JET Close Support Unit, Culham Science Centre, Abingdon, UK.
3) Association Euratom/CEA, CEA CAdarache, Saint-Paul-Lez-Durance, France
4) General Atomics, San Diego, California, USA
5) CRPP Euratom-Confédération Suisse, Ecole Polytechnique Fédéral de Lausanne, Switzerland
6) Association Euratom-Tekes, Helsinki University of Technology, Finland
7) Association Euratom/IPP, Max Planck Institute, Garching, Germany

Abstract.  Studies of (3,2) and (2,1) Neo-classical Tearing Modes (NTMs) in JET are presented. The effects of plasma shape and edge safety factor ( q95) on the $ \beta$-limits set by NTMs are addressed, as are results on the effect of ICRF heating. For the (2,1) NTMs initial comparisons with the $ \beta$-limit thresholds from the DIII-D tokamak are presented.

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IAEA 2001