Improved Particle Confinement with Resonant Magnetic Perturbations in DIII-D Tokamak H-Mode Plasmas.

Autor: Logan NC; Lawrence Livermore National Laboratory, Livermore, California 94550, USA., Hu Q; Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA., Paz-Soldan C; General Atomics, San Diego, California 92186, USA., Nazikian R; Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA., Rhodes T; University of California, Los Angeles, Los Angeles, California 90095, USA., Wilks T; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA., Munaretto S; General Atomics, San Diego, California 92186, USA., Bortolon A; Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA., Laggner F; Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA., Scotti F; Lawrence Livermore National Laboratory, Livermore, California 94550, USA., Hong R; University of California, Los Angeles, Los Angeles, California 90095, USA., Wang H; General Atomics, San Diego, California 92186, USA.
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2022 Nov 11; Vol. 129 (20), pp. 205001.
DOI: 10.1103/PhysRevLett.129.205001
Abstrakt: Experiments on the DIII-D tokamak have identified a novel regime in which applied resonant magnetic perturbations (RMPs) increase the particle confinement and overall performance. This Letter details a robust range of counter-current rotation over which RMPs cause this density pump-in effect for high confinement (H mode) plasmas. The pump in is shown to be caused by a reduction of the turbulent transport and to be correlated with a change in the sign of the induced neoclassical transport. This novel reversal of the RMP induced transport has the potential to significantly improve reactor relevant, three-dimensional magnetic confinement scenarios.
Databáze: MEDLINE
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