Artículo
Observation of accelerated beam ion population during edge localized modes in the ASDEX Upgrade tokamak
Autor/es | Galdón Quiroga, Joaquín
García Muñoz, Manuel McClements, K. G. Nocente, M. Denk, S. S. Freethy, S. Rivero Rodriguez, Juan Francisco Sanchis Sánchez, Lucía Viezzer, Eleonora Willensdorfer, M. |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2019 |
Fecha de depósito | 2022-04-11 |
Publicado en |
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Resumen | The interaction between fast-ions and edge localized modes (ELMs) is investigated by means of fast-ion loss detector measurements. Fast-ion losses are increased during ELMs exhibiting a 3D filamentary-like behaviour. An ... The interaction between fast-ions and edge localized modes (ELMs) is investigated by means of fast-ion loss detector measurements. Fast-ion losses are increased during ELMs exhibiting a 3D filamentary-like behaviour. An accelerated beam ion population has been observed during ELMs in a tokamak for the first time. Tomographic inversion of the measured fast-ion losses reveal multiple velocity-space structures. Attending to the experimental observations, an acceleration mechanism is proposed based on a resonant interaction between the beam ions and parallel electric fields emerging during the ELM crash. The key experimental observations can be qualitatively reproduced by full-orbit following simulations of fast-ions in the presence of the ELM magnetic and electric perturbation fields. Our findings may shed light on the possible contribution of fast-ions to the ELM stability and the transient heat loads on plasma facing components. |
Agencias financiadoras | EUROfusion Consortium Ministerio de Economía y Competitividad (MINECO). España European Union (UE). H2020 |
Identificador del proyecto | 633053
FIS2015-69362-P 708257 |
Cita | Galdón Quiroga, J., García Muñoz, M., McClements, K.G., Nocente, M., Denk, S.S., Freethy, S.,...,Willensdorfer, M. (2019). Observation of accelerated beam ion population during edge localized modes in the ASDEX Upgrade tokamak. Nuclear Fusion, 59, 066016. https://doi.org/10.1088/1741-4326/ab1376. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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10.1088_1741-4326_ab1376.pdf | 28.13Mb | [PDF] | Ver/ | Postprint |
10.1088_1741-4326_ab353c.pdf | 341.4Kb | [PDF] | Ver/ | Erratum |