Effects of resonant magnetic perturbations on radial electric fields in DIII-D tokamak

Fu, Jingyuan; Liu, Pengfei; Wei, Xishuo; Lin, Zhihong; Ferraro, Nathaniel Mandrachia; Nazikian, Raffi

doi:10.1088/2058-6272/ac190e

Title: Effects of resonant magnetic perturbations on radial electric fields in DIII-D tokamak

Journal Article · 26 August 2021 · Plasma Science and Technology

DOI: https://doi.org/10.1088/2058-6272/ac190e · OSTI ID:1888539

^[1]; Liu, Pengfei ^[2]; Wei, Xishuo ^[2]; Lin, Zhihong ^[2];

^[3];

^[3]

Peking Univ., Beijing (China)
Univ. of California, Irvine, CA (United States)
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

Here, gyrokinetic simulations of DIII-D tokamak equilibrium find that resonant magnetic perturbation (RMP) drives a neoclassical non-ambipolar electron particle flux, which causes a rapid change of equilibrium radial electric fields consistent with experimental observations during the suppression of the edge localized mode (ELM). The simulation results provide a support for the conjecture that RMP-induced changes of radial electric fields lead to the enhanced turbulent transport at the pedestal top during the ELM suppression (Taimourzadeh et al 2019 Nucl. Fusion 59 046005). Furthermore, gyrokinetic simulations of collisionless damping of zonal flows show that resonant responses to the RMP decrease the residual level of the zonal flows and damp the geodesic acoustic mode.

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Research Organization:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: China National Magnetic Confinement Fusion Science Program; USDOE

Grant/Contract Number:: AC02-05CH11231; AC02-09CH11466; AC05-00OR22725; FC02-04ER54698; SC0020413

OSTI ID:: 1888539

Journal Information:: Plasma Science and Technology, Journal Name: Plasma Science and Technology Journal Issue: 10 Vol. 23; ISSN 1009-0630

Publisher:: IOPScienceCopyright Statement

Country of Publication:: United States

Language:: English

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