Gyrokinetic prediction of microtearing turbulence in standard tokamaks | Zendy

H. Doerk | Zendy; F. Jenko | Zendy; T. Görler | Zendy; D. Told | Zendy; M. J. Pueschel | Zendy; D. R. Hatch | Zendy

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Gyrokinetic prediction of microtearing turbulence in standard tokamaks

Author(s) -

H. Doerk,

F. Jenko,

T. Görler,

D. Told,

M. J. Pueschel,

D. R. Hatch

Publication year - 2012

Publication title -

physics of plasmas

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.75

H-Index - 160

eISSN - 1089-7674

pISSN - 1070-664X

DOI - 10.1063/1.3694663

Subject(s) - physics , tokamak , asdex upgrade , gyrokinetics , turbulence , flux tube , plasma , nonlinear system , mechanics , shearing (physics) , computational physics , flux (metallurgy) , magnetic flux , magnetic field , nuclear physics , thermodynamics , quantum mechanics , materials science , metallurgy

First global gyrokinetic simulations of microtearing instabilities in ASDEX Upgrade geometry provide increasing evidence for the existence of these modes in standard tokamaks. It is found that even in only moderately large devices, nonlocal effects like profile shearing are negligible, supporting the use of an efficient flux-tube approach. Nonlinear gyrokinetic simulations show that the resulting level of magnetic electron heat flux can be experimentally relevant.

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