Cavedon, M.Happel, T.Hennequin, P.Dux, R.Höfler, K.Plank, U.Pütterich, T.Stroth, U.Viezzer, EleonoraWolfrum, E.2024-05-152024-05-152024Cavedon, 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/ad1ae3.0741-33351361-6587https://hdl.handle.net/11441/158397A 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.application/pdf5 p.engAtribución 4.0 Internacionalhttp://creativecommons.org/licenses/by/4.0/E × B shearL-H transitionShear layerinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccesshttps://doi.org/10.1088/1361-6587/ad1ae3