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Abstract

During the first two years of operation, the TCV tokamak (tokamak à configuration variable) has produced a large variety of plasma shapes and magnetic configurations, with 1.0 </= B(tor) </= 1.46 T, I(p) </= 800 kA, kappa </= 2.05, -0.7 </= delta </= 1. A new shape control algorithm, based on a finite element reconstruction of the plasma current in real time, has been implemented. Vertical growth rates up to 1000 s{-1} have been stabilized using the external coil system. Ohmic H-modes with Troyon factors (beta tor alpha B/Ip) (beta(tor)aB/Ip) up to 2 and densities up to 2.25 E20 m{-3}, corresponding to the Greenwald limit, have been obtained in diverted discharges. Limiter H-modes with line averaged electron densities up to 1.7 E20 m{-3} have been obtained in elongated D-shaped plasmas with 360 kA </= I(p) </= 600 kA.

Additional information

Authors: WEISEN H ET AL, Ecole Polytechnique Fédérale de Lausanne, Centre de Recherches en Physique des Plasmas (CH)
Bibliographic Reference: Article: Czechoslovak Journal of Physics, Vol. 45 (1995) No. 12, pp. 1095-1110
Record Number: 199610149 / Last updated on: 1996-03-01
Category: PUBLICATION
Original language: en
Available languages: en
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