Community Research and Development Information Service - CORDIS

Abstract

The behaviour of the (2, 1) tearing mode in Lower Hybrid Current Drive (LHCD) discharges in ASDEX is examined. Due to the change in the current profile j(r), this mode can be destabilised during LHCD. This often leads to mode locking and a disruption, thereby limiting the amount of LH power that can be transferred to the plasma during current drive. A statistical analysis for two different current drive spectra shows that this power limit is dependent on both plasma current and line-averaged electron density. The possibilities of disruption control are discussed. It is shown that tailoring of the LHCD spectra might avoid the occurrence of the (2, 1) mode.

Additional information

Authors: ZOHM H, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);SÖLDNER F X, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);BRUHNS H, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);BÜCHSE R, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);LEUTERER F, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);ASDEX TEAM, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);SOLDNER F X, Max-Planck-Institut fur Plasmaphysik, Garching bei Munchen (DE);BUCHSE R, Max-Planck-Institut fur Plasmaphysik, Garching bei Munchen (DE)
Bibliographic Reference: Article: Plasma Physics and Controlled Fusion, Vol. 33 (1991) No. 12, pp. 1423-1434
Record Number: 199111516 / Last updated on: 1994-12-02
Category: PUBLICATION
Original language: en
Available languages: en