2022 journal article

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

Physical Review Letters.

By: N. Logan*, Q. Hu*, C. Paz-Soldan*, R. Nazikian*, T. Rhodes*, T. Wilks*, S. Munaretto*, A. Bortolon* ...

co-author countries: United States of America 🇺🇸
Source: ORCID
Added: November 10, 2022

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.