A simulation environment to simulate lower-hybrid-wave-driven plasmas efficiently

Roidl, Benedikt; Todo, Y.; Takase, Y.; Tsujii, N.; Ejiri, A.; Yoshida, Yusuke; Yajima, S.; Shinya, Takahiro

doi:10.1016/j.cpc.2018.04.018

Cited by 2 publications

(2 citation statements)

References 28 publications

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“…where P f and G are now flux functions. By substituting (11), ( 1) is reduced to the standard Grad-Shafranov equation with thermal 'fast electron' contributions: P → P + P f and F → F + G. For the LH current drive application considered in this work, the pressure anisotropy was strong (P P ⊥ ), but the fast electron pressure contributions were small enough that they could be dropped altogether to reduce the model to standard MHD.…”

Section: Extended Mhd Equilibrium Reconstruction With Fast Electronsmentioning

confidence: 99%

“…The impact of collisionless fast particles on MHD equilibrium can be studied by considering an extended MHD model with a two-component plasma of bulk MHD fluid and kinetic fast particles [10]. The impact of LH driven fast electrons on MHD was first studied by performing a time-dependent, extended MHD simulation [11]. The work showed the possible importance of the fast electron current.…”

Section: Introductionmentioning

confidence: 99%

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Modification of the magneto-hydrodynamic equilibrium by the lower-hybrid wave driven fast electrons on the TST-2 spherical tokamak

et al. 2021

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Presence of a large population of fast particles may qualitatively modify the tokamak equilibrium from the one that can be described by standard magneto-hydrodynamics (MHD). The kinetic modification of the MHD equilibrium was studied for a lower-hybrid (LH) wave driven plasma on the TST-2 spherical tokamak. The analysis was performed using an equilibrium reconstruction method based on an extended MHD model that considers a two-component plasma of bulk MHD fluid and kinetic fast electrons. Scrape-off-layer current appeared naturally in the extended MHD analysis because of the finite electron orbit excursion from the flux surfaces. This reduced the bulk pressure contribution to the toroidal current substantially. The resulting poloidal flux profile was more consistent with that inferred from the Thomson scattering measurement.

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Section: Extended Mhd Equilibrium Reconstruction With Fast Electronsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modification of the magneto-hydrodynamic equilibrium by the lower-hybrid wave driven fast electrons on the TST-2 spherical tokamak

et al. 2021

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Studies of a Lower-Hybrid Wave Driven Plasma Equilibrium with a Hybrid-MHD Model on the TST-2 Spherical Tokamak

Tsujii

Yoshida

Takase

et al. 2020

Plasma and Fusion Research

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A simulation environment to simulate lower-hybrid-wave-driven plasmas efficiently

Cited by 2 publications

References 28 publications

Modification of the magneto-hydrodynamic equilibrium by the lower-hybrid wave driven fast electrons on the TST-2 spherical tokamak

Modification of the magneto-hydrodynamic equilibrium by the lower-hybrid wave driven fast electrons on the TST-2 spherical tokamak

Studies of a Lower-Hybrid Wave Driven Plasma Equilibrium with a Hybrid-MHD Model on the TST-2 Spherical Tokamak

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