Two-Step Approach to Steady-State Current Drive in Tokamaks by Use of Electron Cyclotron Heating
- 28 March 1983
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 50 (13) , 970-973
- https://doi.org/10.1103/physrevlett.50.970
Abstract
An approach to sustaining steady-state toroidal currents in tokamaks by use of two separate electron cyclotron heating sources is described. One source creates a minority group of collisionless, barely trapped electrons. The second source uses frequency modulation to detrap some of these with a large degree of toroidal asymmetry. The power dissipated in sustaining the steady-state toroidal current can be less than 1 W/A for typical tokamak conditions.Keywords
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