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The operational limits of ohmic plasmas in the elongated TCV tokamak are described. A database dedicated to the study of the plasma operational range and disruption probability statistics has been created. The experimental campaigns in TCV are exploratory by design, leading inevitably to a large variety of disruptions. This paper presents a first attempt to describe disruptions and the operational range in TCV. The essential diagnostics presently available and used for this study are: the equilibrium reconstruction code LIUQE based on magnetic measurements, a 5 channel interferometer, magnetohydrodynamics (MHD) probes, soft X-rays, and some spectroscopic lines. The quality of plasma performance so far achieved in these ohmic discharges is beta (N)< 2.0, H (ITER-89P)< 2.4.

Additional information

Authors: POCHELON A ET AL, Ecole Polytechnique Fédérale de Lausanne, Centre de Recherches enPhysique des Plasmas (CH)
Bibliographic Reference: Article: Proceedings of the 22nd European Physical Society Conference on Controlled Fusion and Plasma Physics, Vol. 19C (1995) Part 4, pp. 81-84
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