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J. Rapp1, F. Salzedas2, P. C. De
Vries2, S. Hokin3, H. R. Koslowski1,
A. M. Messiaen4, A. Pospieszczyk1,
F. C. Schüller2 and the TEXTOR and RTP teams
1 Institut für Plasmaphysik, Forschungszentrum Jülich GmbH,
EURATOM Association, D-52425 Jülich, Germany
2 FOM-Instituut voor Plasmafysica `Rijnhuizen', EURATOM Association,
3430 BE Nieuwegein, The Netherlands
3 Royal Institute of Technology, Stockholm, Sweden
4 Laboratoire de Physique des Plasmas / Laboratorium voor Plasmafysica,
ERM/KMS, EURATOM Association, B-1000 Brussels, Belgium
Abstract. Ignition scenarios like those developed for ITER require plasma
densities which will be close or above the Greenwald limit. Generally it is
observed that exceeding this limit may lead to a degradation of plasma
confinement or to a violent end of the discharge. The achievable
density limit and the related processes, such as radiative instabilities
and MHD
phenomena, which eventually lead to disruption, have been investigated in
the limiter tokamaks TEXTOR-94 and RTP.
IAEA 2001
