Self-Organized Stationary States of Tokamaks
Open Access
- 17 November 2015
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 115 (21), 215001
- https://doi.org/10.1103/physrevlett.115.215001
Abstract
We demonstrate that in a 3D resistive magnetohydrodynamic simulation, for some parameters it is possible to form a stationary state in a tokamak where a saturated interchange mode in the center of the discharge drives a near helical flow pattern that acts to nonlinearly sustain the configuration by adjusting the central loop voltage through a dynamo action. This could explain the physical mechanism for maintaining stationary nonsawtoothing “hybrid” discharges, often referred to as “flux pumping.”Keywords
Funding Information
- U.S. Department of Energy (DE-AC02-09CH11466)
- Rensselaer Polytechnic Institute
- Max-Plank Princeton Center for Plasma Physics
- SCIDAC
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