English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/158548
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Collective Thomson scattering measurements of fast-ion transport due to sawtooth crashes in ASDEX Upgrade

AutorRasmussen, J.; Galdon-Quiroga, J.; García-Muñoz, M.
Fecha de publicación2016
EditorInstitute of Physics Publishing
CitaciónNuclear Fusion 56(11): 112014 (2016)
ResumenSawtooth instabilities can modify heating and current-drive profiles and potentially increase fast-ion losses. Understanding how sawteeth redistribute fast ions as a function of sawtooth parameters and of fast-ion energy and pitch is hence a subject of particular interest for future fusion devices. Here we present the first collective Thomson scattering (CTS) measurements of sawtooth-induced redistribution of fast ions at ASDEX Upgrade. These also represent the first localized fast-ion measurements on the high-field side of this device. The results indicate fast-ion losses in the phase-space measurement volume of about 50% across sawtooth crashes, in good agreement with values predicted with the Kadomtsev sawtooth model implemented in TRANSP and with the sawtooth model in the EBdyna_go code. In contrast to the case of sawteeth, we observe no fast-ion redistribution in the presence of fishbone modes. We highlight how CTS measurements can discriminate between different sawtooth models, in particular when aided by multi-diagnostic velocity-space tomography, and briefly discuss our results in light of existing measurements from other fast-ion diagnostics
DescripciónThe ASDEX Upgrade Team and the EUROFusion MST1 Team: et al.
URIhttp://hdl.handle.net/10261/158548
Identificadoresdoi: 10.1088/0029-5515/56/11/112014
issn: 0029-5515
e-issn: 1741-4326
Aparece en las colecciones: (CNA) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.