dc.creator | Sharapov, S. E. | es |
dc.creator | García Muñoz, Manuel | es |
dc.creator | Zeeland, M. A. van | es |
dc.creator | Bobkov, B. | es |
dc.creator | Classen, I. G. J. | es |
dc.creator | Galdón Quiroga, Joaquín | es |
dc.creator | González Martín, Juan de Dios | es |
dc.creator | Rodríguez Ramos, Mauricio | es |
dc.creator | Sanchís Sánchez, Lucía | es |
dc.date.accessioned | 2020-07-21T13:26:25Z | |
dc.date.available | 2020-07-21T13:26:25Z | |
dc.date.issued | 2018-01 | |
dc.identifier.citation | Sharapov, S.E., García Muñoz, M., Van Zeeland, M.A., Bobkov, B., Classen, I.G.J., Galdón Quiroga, J.,...,Sanchís Sánchez, L. (2018). The effects of electron cyclotron heating and current drive on toroidal Alfven eigenmodes in tokamak plasmas. Plasma Physics and Controlled Fusion, 60 (1), 1-10. | |
dc.identifier.issn | 1361-6587 | es |
dc.identifier.uri | https://hdl.handle.net/11441/99691 | |
dc.description.abstract | Dedicated studies performed for toroidal Alfvén eigenmodes (TAEs) in ASDEX-Upgrade (AUG)
discharges with monotonic q-profiles have shown that electron cyclotron resonance heating (ECRH)
can make TAEs more unstable. In these AUG discharges, energetic ions driving TAEs were obtained
by ion cyclotron resonance heating (ICRH). It was found that off-axis ECRH facilitated TAE
instability, with TAEs appearing and disappearing on timescales of a few milliseconds when the
ECRH power was switched on and off. On-axis ECRH had a much weaker effect on TAEs, and in
AUG discharges performed with co- and counter-current electron cyclotron current drive (ECCD),
the effects of ECCD were found to be similar to those of ECRH. Fast ion distributions produced by
ICRH were computed with the PION and SELFO codes. A significant increase in Te caused by
ECRH applied off-axis is found to increase the fast ion slowing-down time and fast ion pressure
causing a significant increase in the TAE drive by ICRH-accelerated ions. TAE stability calculations
show that the rise in Te causes also an increase in TAE radiative damping and thermal ion Landau damping, but to a lesser extent than the fast ion drive. As a result of the competition between larger drive and damping effects caused by ECRH, TAEs become more unstable. It is concluded, that although ECRH effects on AE stability in present-day experiments may be quite significant, they are determined by the changes in the plasma profiles and are not particularly ECRH specific. | es |
dc.description.sponsorship | EURATOM 633053 | es |
dc.description.sponsorship | RCUK Energy Programme P012450/1 | es |
dc.format | application/pdf | es |
dc.format.extent | 11 p. | es |
dc.language.iso | eng | es |
dc.publisher | IOP Publishing | es |
dc.relation.ispartof | Plasma Physics and Controlled Fusion, 60 (1), 1-10. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Energetic particles | es |
dc.subject | Alfvén eigenmodes | es |
dc.subject | ECRH | es |
dc.subject | ECCD | es |
dc.subject | ICRH | es |
dc.title | The effects of electron cyclotron heating and current drive on toroidal Alfven eigenmodes in tokamak plasmas | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear | es |
dc.relation.projectID | 633053 | es |
dc.relation.projectID | P012450/1 | es |
dc.relation.publisherversion | https://doi.org/10.1088/1361-6587/aa90ee | es |
dc.identifier.doi | 10.1088/1361-6587/aa90ee | es |
dc.contributor.group | Universidad de Sevilla. RNM138: Física Nuclear Aplicada | es |
dc.journaltitle | Plasma Physics and Controlled Fusion | es |
dc.publication.volumen | 60 | es |
dc.publication.issue | 1 | es |
dc.publication.initialPage | 1 | es |
dc.publication.endPage | 10 | es |