Integrated modelling and multiscale gyrokinetic validation study of ETG turbulence in a JET hybrid H-mode scenario
نویسندگان
چکیده
Abstract Previous studies with first-principle-based integrated modelling suggested that electron temperature gradient (ETG) turbulence may lead to an anti-gyroBohm isotope scaling in JET high-performance hybrid H-mode scenarios. A dedicated comparison study against higher-fidelity invalidates this claim. Ion-scale magnetic field perturbations included, can match the power balance fluxes within error margins. Multiscale gyrokinetic simulations from two distinct codes produce no significant ETG heat flux, demonstrating simple rules-of-thumb are insufficient criteria for its onset.
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ژورنال
عنوان ژورنال: Nuclear Fusion
سال: 2022
ISSN: ['0029-5515', '1741-4326']
DOI: https://doi.org/10.1088/1741-4326/ac7535