Microturbulence in DIII-D tokamak pedestal. IV. Electrostatic turbulent transport

Liao, X.; Lin, Z.; Holod, I.; Li, B.; Sun, G. Y.

doi:10.1063/1.4972080

Title: Microturbulence in DIII-D tokamak pedestal. IV. Electrostatic turbulent transport

Journal Article · Fri Dec 16 00:00:00 EST 2016 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4972080· OSTI ID:1465367

^[1];

^[2]; Holod, I. ^[2]; Li, B. ^[1]; Sun, G. Y. ^[3]

Peking Univ., Beijing (China). Fusion Simulation Center, State Key Lab. of Nuclear Physics and Technology, School of Physics
Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy
Xiamen Univ., Xiamen (China). Dept. of Physics, and Institute of Theoretical Physics and Astrophysics

Gyrokinetic simulations of electrostatic microturbulence in the edge plasmas of DIII-D shot 131997 find that the geodesic acoustic mode (GAM) is generated after nonlinear saturation both at the pedestal top and in the peak gradient region, and in turn, regulates the turbulence in both regions. Collisions significantly reduce the GAM amplitude and the associated GAM modulation of the turbulence in both regions. Collisions have little effects on the ion temperature gradient turbulent transport level at the pedestal top. Finally, on the other hand, collisional damping of the TEM significantly reduces the turbulent transport level in the peak gradient region.

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Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Univ. of California, Irvine, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: SC0010416; AC02-05CH11231; AC05-00OR22725

OSTI ID:: 1465367

Alternate ID(s):: OSTI ID: 1336488

Journal Information:: Physics of Plasmas, Vol. 23, Issue 12; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 9 works

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Cited By (3)

Effects of RMP-induced changes of radial electric fields on microturbulence in DIII-D pedestal top Taimourzadeh, S.; Shi, L.; Lin, Z. Nuclear Fusion, Vol. 59, Issue 4 https://doi.org/10.1088/1741-4326/aafe3a	journal	February 2019
Kinetic theory of geodesic acoustic modes in toroidal plasmas: a brief review Qiu, Zhiyong; Chen, Liu; Zonca, Fulvio Plasma Science and Technology, Vol. 20, Issue 9 https://doi.org/10.1088/2058-6272/aab4f0	journal	July 2018
Kinetic theory of geodesic acoustic modes in toroidal plasmas: a brief review Qiu, Zhiyong; Chen, Liu; Zonca, Fulvio arXiv https://doi.org/10.48550/arxiv.1801.01622	text	January 2018

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