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Integrated modelling and multiscale gyrokinetic validation study of ETG turbulence in a JET hybrid H-mode scenario

Citrin, J.; Maeyama, S.; Angioni, C.; Bonanomi, N.; Bourdelle, C.; Casson, F. J.; Fable, E.; Goerler, T.; Mantica, P.; Mariani, A.; Sertoli, M.; Staebler, G.; Watanabe, T.

Journal: Nuclear fusion 62 (8), pp. 086025-1 - 086025-18 Year: 2022
ISTP Authors:
Alberto Mariani
Paola Mantica
Keywords: , , , ,
Research Activitie:

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 turbulence modelling invalidates this claim. Ion-scale turbulence with magnetic field perturbations included, can match the power balance fluxes within temperature gradient error margins. Multiscale gyrokinetic simulations from two distinct codes produce no significant ETG heat flux, demonstrating that simple rules-of-thumb are insufficient criteria for its onset.

ID 469064
DOI 10.1088/1741-4326/ac7535
PRODUCT TYPE Journal Article
LAST UPDATE 2023-02-07T13:59:09Z
EU PROJECT EUROfusion
TITLE Implementation of activities described in the Roadmap to Fusion during Horizon 2020 through a Joint programme of the members of the EUROfusion consortium
FOUNDING PROGRAM H2020
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