Observation of accelerated beam ion population during edge localized modes in the ASDEX Upgrade tokamak
| Autor: | Simon Freethy, M. Willensdorfer, M. Garcia-Munoz, E. Viezzer, L. Sanchis-Sanchez, J. Galdon-Quiroga, M. Nocente, A. S. Jacobsen, K. G. McClements, F. Orain, J. F. Rivero-Rodriguez, EUROfusion Mst Team, S. S. Denk, W. Suttrop, Mirko Salewski |
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| Přispěvatelé: | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, EUROfusion Consortium, Ministerio de Economía y Competitividad (MINECO). España, European Union (UE). H2020, García-Muñoz, M., McClements, K. G., Nocente, M., Denk, S.S., Salewski, M., Sanchis-Sanchez, L., Viezzer, Eleonora, García-Muñoz, M. [0000-0002-3241-502X], McClements, K. G. [0000-0002-5162-509X], Nocente, M. [0000-0003-0170-5275], Denk, S.S. [0000-0002-9077-4610], Salewski, M. [0000-0002-3699-679X], Sanchis-Sanchez, L. [0000-0001-8211-3356], Viezzer, Eleonora [0000-0001-6419-6848], Galdon-Quiroga, J, Garcia-Munoz, M, Mcclements, K, Nocente, M, Denk, S, Freethy, S, Jacobsen, A, Orain, F, Rivero-Rodriguez, J, Salewski, M, Sanchis-Sanchez, L, Suttrop, W, Viezzer, E, Willensdorfer, M, ASDEX Upgrade Team, Max Planck Institute for Plasma Physics, Max Planck Society, EUROfusion MST1 Team |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Nuclear and High Energy Physics
Tokamak particle acceleration Population Particle acceleration Fast-ion losses 01 natural sciences Electromagnetic radiation 010305 fluids & plasmas law.invention Ion Nuclear physics ASDEX Upgrade law Physics::Plasma Physics 0103 physical sciences fast ion 010306 general physics education tokamak Physics education.field_of_study Fast ions Condensed Matter Physics edge localized mode fast-ion losse Charged particle Edge localized modes Beam (structure) |
| Zdroj: | Galdon-Quiroga, J, Garcia-Munoz, M, McClements, K G, Nocente, M, Denk, S S, Freethy, S, Jacobsen, A S, Orain, F, Rivero-Rodriguez, J F, Salewski, M, Sanchis-Sanchez, L, Suttrop, W, Viezzer, E, Willensdorfer, M, ASDEX Upgrade Team & EUROfusion MST1 Team 2019, ' Observation of accelerated beam ion population during edge localized modes in the ASDEX Upgrade tokamak ', Nuclear Fusion, vol. 59, 066016 . https://doi.org/10.1088/1741-4326/ab1376 Nuclear Fusion idUS. Depósito de Investigación de la Universidad de Sevilla instname Digital.CSIC. Repositorio Institucional del CSIC |
| ISSN: | 0741-3335 0029-5515 1367-2630 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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