Measurement of toroidal Alfvén eigenmode-driven fast-ion flows using an imaging neutral particle analyzer at ASDEX Upgrade

Alfvén Eigenmodes-driven fast-ion flows have been measured for the first time at the ASDEX Upgrade tokamak using an imaging neutral particle analyzer. The flow is such that particles are expelled from the mode location, losing energy as they move outwards. This flow aligns well with the projection o...

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Detalles Bibliográficos
Autores: Rueda Rueda, José, García Muñoz, Manuel, Viezzer, Eleonora, Schneider, P., Galdón Quiroga, Joaquín, García Domínguez, Javier, Oyola Domínguez, Pablo, Velarde Gallardo, Lina, Hidalgo Salaverri, Javier, González Martín, Javier, Ayllón Guerola, Juan Manuel
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/162047
Acceso en línea:https://hdl.handle.net/11441/162047
https://doi.org/10.1088/1741-4326/ad43fe
Access Level:acceso abierto
Palabra clave:fast-ion diagnosis
neutral particle analyzer,
fast-ion transport
Descripción
Sumario:Alfvén Eigenmodes-driven fast-ion flows have been measured for the first time at the ASDEX Upgrade tokamak using an imaging neutral particle analyzer. The flow is such that particles are expelled from the mode location, losing energy as they move outwards. This flow aligns well with the projection of the lines of constant magnetic moment and constant E ′ (E ′ = E − ωPϕ/n, with E being the particle energy, ω,n the mode frequency and toroidal number and Pϕ the toroidal canonical angular momentum). The observed redistributions are consistent with full-orbit simulations performed with the ASCOT5 code, using the mode structure predicted by the linear gyro-kinetic code LIGKA.

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