Cavedon, M.Pütterich, T.Viezzer, EleonoraLaggner, F. M.Burckhart, A.Dunne, M. G.Fischer, R.Lebschy, A.Mink, F.Stroth, U.Willensdorfer, M.Wolfrum, E.2018-09-172018-09-172017Cavedon, M., Pütterich, T., Viezzer, E., Laggner, F.M., Burckhart, A., Dunne, M.G.,...,Wolfrum, E. (2017). Pedestal and Er profile evolution during an edge localized mode cycle at ASDEX Upgrade. Plasma Physics and Controlled Fusion, 59, 105007 (8pp). https://doi.org/10.1088/1361-6587/aa7ad0.1361-6587https://hdl.handle.net/11441/78538The upgrade of the edge charge exchange recombination spectroscopy diagnostic at ASDEX Upgrade has enabled highly spatially resolved me asurements of the impurity ion dynamics during an edge-localized mode cycle ( ELM ) with unprecedented temp oral resolution, i.e. 65 μ s. The increase of transport during an ELM induces a relaxation of the ion, electron edge gradients in impurity density and fl ows. Detailed characterization of the recovery of the edge temperature gradients reveals a difference in the ion and electron channe l: the maximum ion temperature gradient T i  is re-established on similar timescales as n e  , which is faster than the recovery of T e  .Afterthe clamping of the maximum gradient, T i and T e at the pedestal top continue to rise up to the next ELM while n e stays constant which means that the temperatur e pedestal and the resu lting pedestal pressure widen until the next ELM. The edge radial electric fi eld E r at the ELM crash is found to reduce to typical L-mode values and its ma ximum recovers to its pre-ELM conditions on a similar time scale as for n e and T i . Within the uncertainties, the measurements of E r align with their neoclassical predictions E r,neo for most of the ELM cycle, thus indicating that E r is dominated by collisional processes. However, between 2 and 4 ms af ter the ELM crash, other contributions to E B ́ fl ow, e.g. zonal fl ows or ion orbit effects, could not be excluded within the uncertainties.application/pdfengAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Edge localised modesIon temperatureEdge gradient recoveryRadial electric fieldinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccesshttps://doi.org/10.1088/1361-6587/aa7ad0