Electromagnetic turbulence suppression by energetic particle driven modes

A Di Siena, T Görler, E Poli, AB Navarro… - Nuclear …, 2019 - iopscience.iop.org
In recent years, a strong reduction of plasma turbulence in the presence of energetic
particles has been reported in a number of magnetic confinement experiments and …

Multiscale nature of the dissipation range in gyrokinetic simulations of Alfvénic turbulence

D Told, F Jenko, JM TenBarge, GG Howes… - Physical review …, 2015 - APS
Nonlinear energy transfer and dissipation in Alfvén wave turbulence are analyzed in the first
gyrokinetic simulation spanning all scales from the tail of the MHD range to the electron …

Phase mixing versus nonlinear advection in drift-kinetic plasma turbulence

AA Schekochihin, JT Parker, EG Highcock… - Journal of Plasma …, 2016 - cambridge.org
A scaling theory of long-wavelength electrostatic turbulence in a magnetised, weakly
collisional plasma (eg drift-wave turbulence driven by ion temperature gradients) is …

Fast-ion stabilization of tokamak plasma turbulence

A Di Siena, T Görler, H Doerk, E Poli, R Bilato - Nuclear Fusion, 2018 - iopscience.iop.org
A significant reduction of the turbulence-induced anomalous heat transport has been
observed in recent studies of magnetically confined plasmas in the presence of a significant …

Global gyrokinetic simulations of ITG turbulence in the magnetic configuration space of the Wendelstein 7-X stellarator

AB Navarro, G Merlo, GG Plunk… - Plasma Physics and …, 2020 - iopscience.iop.org
We study the effect of turbulent transport in different magnetic configurations of the
Weldenstein 7-X stellarator. In particular, we performed direct numerical simulations with the …

Turbulence suppression by energetic particle effects in modern optimized stellarators

A Di Siena, A Bañón Navarro, F Jenko - Physical Review Letters, 2020 - APS
Turbulent transport is known to limit the plasma confinement of present-day optimized
stellarators. To address this issue, a novel method to strongly suppress turbulence in such …

Global electromagnetic turbulence simulations of W7-X-like plasmas with GENE-3D

F Wilms, AB Navarro, G Merlo, L Leppin… - Journal of Plasma …, 2021 - cambridge.org
The GENE-3D code, the global stellarator version of the established GENE framework, has
been extended to an electromagnetic gyrokinetic code. This paper outlines the basic …

Interplay between magnetic shear and triangularity in ion temperature gradient and trapped electron mode dominated plasmas

G Merlo, F Jenko - Journal of Plasma Physics, 2023 - cambridge.org
Interplay between magnetic shear and triangularity in ion temperature gradient and trapped
electron mode dominated plasmas Page 1 J. Plasma Phys. (2023), vol. 89, 905890104 © …

Gyrokinetic study of transport suppression in JET plasmas with MeV-ions and toroidal Alfvén eigenmodes

S Mazzi, J Garcia, D Zarzoso… - Plasma Physics and …, 2022 - iopscience.iop.org
The impact of fast ions, generated in the MeV-range through the efficient application of the
three-ion scheme in JET plasmas, on the turbulence properties is presented through …

Stellarator microinstabilities and turbulence at low magnetic shear

BJ Faber, MJ Pueschel, PW Terry, CC Hegna… - Journal of Plasma …, 2018 - cambridge.org
Gyrokinetic simulations of drift waves in low-magnetic-shear stellarators reveal that
simulation domains comprised of multiple turns can be required to properly resolve critical …