Disruption avoidance in the SINP-Tokamak by means of electrode-biasing at the plasma edge
- 1 May 2013
- journal article
- research article
- Published by AIP Publishing in Physics of Plasmas
- Vol. 20 (5) , 052502
Abstract
Control of plasma disruption by a biased edge electrode is reported in SINP-Tokamak. The features that characterize a plasma disruption are reduced with increasing bias potential. The disruption can be completely suppressed with the concomitant stabilization of observed MHD modes that are allegedly precursors of the disruption. An m = 3/n = 1 tearing mode, which apparently causes disruption can be stabilized when a negative biasing potential is applied near the edge. These changes in the disruptive behavior with edge biasing are hypothesized to be due to changes in the current density profile.Keywords
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