Article
The radial localization of the transition from low to high confinement mode in the ASDEX Upgrade tokamak
Author/s | Cavedon, M.
Happel, T. Hennequin, P. Dux, R. Höfler, K. Plank, U. Pütterich, T. Stroth, U. Viezzer, Eleonora Wolfrum, E. |
Department | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Publication Date | 2024 |
Deposit Date | 2024-05-15 |
Published in |
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Abstract | A novel experimental method is applied to localize the initial suppression of turbulence, in the form of density fluctuations, at the transition from the low (L-) to the high (H-) confinement mode in toroidal magnetic ... A novel experimental method is applied to localize the initial suppression of turbulence, in the form of density fluctuations, at the transition from the low (L-) to the high (H-) confinement mode in toroidal magnetic fusion plasmas. The high radial and temporal resolution, combined with the unprecedented statistical significance, provided the awaited information on a possible dominant E × B shear layer in L-H transition physics. We show, for the first time, that the H-mode turbulence suppression is initiated at the inner E × B shear layer in the ASDEX Upgrade tokamak possibly shedding light on the causality behind the L-H transition process. |
Citation | Cavedon, M., Happel, T., Hennequin, P., Dux, R., Höfler, K., Plank, U.,...,Wolfrum, E. (2024). The radial localization of the transition from low to high confinement mode in the ASDEX Upgrade tokamak. Plasma Physics and Controlled Fusion, 66 (2), 025011. https://doi.org/10.1088/1361-6587/ad1ae3. |
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