dc.creator | Salewski, M. | es |
dc.creator | Geiger, B. | es |
dc.creator | Jacobsen, A.S. | es |
dc.creator | García Muñoz, Manuel | es |
dc.creator | Heidbrink, W. W. | es |
dc.creator | Korsholm, S.B. | es |
dc.creator | Leipold, F. | es |
dc.creator | Madsen, J. | es |
dc.creator | Moseev, D. | es |
dc.creator | Nielsen, S K | es |
dc.date.accessioned | 2020-05-12T07:38:02Z | |
dc.date.available | 2020-05-12T07:38:02Z | |
dc.date.issued | 2014 | |
dc.identifier.citation | Salewski, M., Geiger, B., Jacobsen, A.S., García Muñoz, M., Heidbrink, W.W., Korsholm, S.B.,...,Nielsen, S.K. (2014). Measurement of a 2D fast-ion velocity distribution function by tomographic inversion of fast-ion D-alpha spectra. Nuclear Fusion, 54 (2), 1-12. | |
dc.identifier.issn | 1741-4326 | es |
dc.identifier.uri | https://hdl.handle.net/11441/96417 | |
dc.description.abstract | We present the first measurement of a local fast-ion 2D velocity distribution function f(v||, v⊥). To this end, we heated a plasma in ASDEX Upgrade by neutral beam injection and measured spectra of fast-ion Dα (FIDA) light from the plasma centre in three views simultaneously. The measured spectra agree very well with synthetic spectra calculated from a TRANSP/NUBEAM simulation. Based on the measured FIDA spectra alone, we infer f(v||, v⊥) by tomographic inversion. Salient features of our measurement of f(v||, v⊥) agree reasonably well with the simulation: the measured as well as the simulated f(v||, v⊥) are lopsided towards negative velocities parallel to the magnetic field, and they have similar shapes. Further, the peaks in the simulation of f(v||, v⊥) at full and half injection energies of the neutral beam also appear in the measurement at similar velocity-space locations. We expect that we can measure spectra in up to seven views simultaneously in the next ASDEX Upgrade campaign which would further improve measurements of f(v||, v⊥) by tomographic inversion. | es |
dc.format | application/pdf | es |
dc.format.extent | 12 p. | es |
dc.language.iso | eng | es |
dc.publisher | OP Publishing | es |
dc.relation.ispartof | Nuclear Fusion, 54 (2), 1-12. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.title | Measurement of a 2D fast-ion velocity distribution function by tomographic inversion of fast-ion D-alpha spectra | es |
dc.type | info:eu-repo/semantics/article | es |
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.publisherversion | http://dx.doi.org/10.1088/0029-5515/54/2/023005 | es |
dc.identifier.doi | 10.1088/0029-5515/54/2/023005 | es |
dc.journaltitle | Nuclear Fusion | es |
dc.publication.volumen | 54 | es |
dc.publication.issue | 2 | es |
dc.publication.initialPage | 1 | es |
dc.publication.endPage | 12 | es |