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Plasma Physics and Controlled Fusion
Article . 2023 . Peer-reviewed
License: IOP Copyright Policies
Data sources: Crossref
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Impact of magnetic ripple on neoclassical equilibrium in gyrokinetic simulations

Authors: R Varennes; X Garbet; L Vermare; Y Sarazin; G Dif-Pradalier; V Grandgirard; P Ghendrih; +4 Authors

Impact of magnetic ripple on neoclassical equilibrium in gyrokinetic simulations

Abstract

Abstract The effect of magnetic field ripple on tokamak plasma without turbulence is studied numerically and augmented with a reduced analytical model that includes neoclassical processes in the presence of non-axisymmetric perturbation and stochastic transport. For this study, a magnetic field ripple perturbation has been implemented in the GYSELA gyrokinetic code. This implementation has been verified thanks to a test of toroidal angular momentum conservation. The GYSELA code was then successfully benchmarked against the NEO code, which solves the drift kinetic equation, and against the reduced model in the collisionality range ν ⋆ ∈ [0.05–0.5] for several amplitudes of the magnetic ripple. An observation, shared by the model, the NEO code and GYSELA simulations is that the thermal drive of the mean poloidal velocity—measured by the k V P coefficient—decreases sharply for large yet experimentally relevant magnetic ripple amplitudes, and may even change sign.

Country
France
Keywords

stochastic transport, Nuclear Energy and Engineering, neoclassical transport, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], [PHYS.PHYS.PHYS-PLASM-PH] Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], plasma flow, Condensed Matter Physics

34 references, page 1 of 4

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  • citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    1
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Average
Average
Funded by
EC| EoCoE-II
Project
EoCoE-II
Energy Oriented Center of Excellence : toward exascale for energy
  • Funder: European Commission (EC)
  • Project Code: 824158
  • Funding stream: H2020 | RIA
,
EC| EUROfusion
Project
EUROfusion
Implementation of activities described in the Roadmap to Fusion during Horizon Europe through a joint programme of the members of the EUROfusion consortium
  • Funder: European Commission (EC)
  • Project Code: 101052200
  • Funding stream: HE | EURATOM-AG ; HE | EURATOM-COFUND
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