Magnetic-Flux Pumping in High-Performance, Stationary Plasmas with Tearing Modes
- 30 January 2009
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 102 (4), 045005
- https://doi.org/10.1103/physrevlett.102.045005
Abstract
Analysis of the change in the magnetic field pitch angles during edge localized mode events in high performance, stationary plasmas on the DIII-D tokamak shows rapid () broadening of the current density profile, but only when a tearing mode is present. This observation of poloidal magnetic-flux pumping explains an important feature of this scenario, which is the anomalous broadening of the current density profile that beneficially maintains the safety factor above unity and forestalls the sawtooth instability.
Keywords
This publication has 21 references indexed in Scilit:
- Forced Magnetic Reconnection and Field Penetration of an Externally Applied Rotating Helical Magnetic Field in the TEXTOR TokamakPhysical Review Letters, 2006
- Measurement of the Hall Dynamo Effect during Magnetic Reconnection in a High-Temperature PlasmaPhysical Review Letters, 2004
- Integrated scenario in JET using real-time profile controlPlasma Physics and Controlled Fusion, 2003
- Achievement of high fusion triple product, steady-state sustainment and real-time NTM stabilization in high- pELMy H-mode discharges in JT-60UNuclear Fusion, 2003
- Steady state advanced scenarios at ASDEX UpgradePlasma Physics and Controlled Fusion, 2002
- Downward pumping of magnetic flux as the cause of filamentary structures in sunspot penumbraeNature, 2002
- The ITER designPlasma Physics and Controlled Fusion, 2002
- Physics of advanced tokamaksPlasma Physics and Controlled Fusion, 1997
- Observation of Nonlinear Neoclassical Pressure-Gradient–Driven Tearing Modes in TFTRPhysical Review Letters, 1995
- Studies of Internal Disruptions andOscillations in Tokamak Discharges with Soft—X-Ray TecniquesPhysical Review Letters, 1974