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.date.accessioned | 2020-08-28T14:07:08Z | |
dc.date.available | 2020-08-28T14:07:08Z | |
dc.date.issued | 2014-02 | |
dc.identifier.citation | Salewski, M., Geiger, B., Jacobsen, A.S., García Muñoz, M. y Heidbrink, W.W. (2014). Measurement of a 2D fast-ion velocity distribution function by tomographic inversion of fast-ion D-alpha spectra. Nuclear Fusion, 54 (2), 023005-. | |
dc.identifier.issn | 0029-5515 | es |
dc.identifier.uri | https://hdl.handle.net/11441/100542 | |
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 | 8 p. | es |
dc.language.iso | eng | es |
dc.publisher | IOP Publishing | es |
dc.relation.ispartof | Nuclear Fusion, 54 (2), 023005-. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Fast-ion velocity distribution function | es |
dc.subject | Tomography Inverse problems | es |
dc.subject | Fast ions in tokamaks | es |
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 |
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.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.contributor.group | Universidad de Sevilla. RNM138: Física Nuclear Aplicada | es |
dc.journaltitle | Nuclear Fusion | es |
dc.publication.volumen | 54 | es |
dc.publication.issue | 2 | es |
dc.publication.initialPage | 023005 | es |