Dependence on plasma shape and plasma fueling for small ELM regimes in TCV and ASDEX Upgrade
- Creators
- Labit, B.
- Eich, T.
- Harrer, G.
- Wolfrum, E.
- Bernert, M.
- Jet Contributors
- García Muñoz, Manuel
- Ayllón Guerola, Juan Manuel
- Cano Megías, Pilar
- Cruz Zabala, Diego José
- Domínguez-Palacios Durán, Jesús José
- Galdón Quiroga, Joaquín
- García López, Francisco Javier
- Gonzalez Martin, Javier
- Rodríguez Ramos, María José
- Sanchís Sánchez, Lucía
- Soria del Hoyo, Carlos
- Toscano Jiménez, Manuel
- Viezzer, Eleonora
- Others:
- Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
- Universidad de Sevilla. Departamento de Ingeniería Mecánica y Fabricación
- Universidad de Sevilla. Departamento de Ingeniería Energética
- Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo
- Universidad de Sevilla. Departamento de Física Aplicada III
- Universidad de Sevilla. RNM138: Física Nuclear Aplicada
- Universidad de Sevilla. TEP111: Ingeniería Mecánica
- Universidad de Sevilla. SEJ453: Empleo y Administracion Publica. Viejos y Nuevos Problemas Organizativos. Referencia Especial a la Empresa Publica
- Universidad de Sevilla. FQM253: Electrohidrodinamica y Medios Granulares Cohesivos
Description
Within the EUROfusion MST1 Work Package, a series of experiments has been conducted on AUG and TCV devices to disentangle the role of plasma fueling and plasma shape for the onset of small ELM regimes. On both devices, small ELM regimes with high confinement are achieved if and only if two conditions are fulfilled at the same time. Firstly, the plasma density at the separatrix must be large enough (ne,sep/nG ∼ 0.3), leading to a pressure profile flattening at the separatrix, which stabilizes type-I ELMs. Secondly, the magnetic configuration has to be close to a Double Null (DN), leading to a reduction of the magnetic shear in the extreme vicinity of the separatrix. As a consequence, its stabilizing effect on ballooning modes is weakened.
Abstract
EURATOM 633053
Additional details
- URL
- https://idus.us.es/handle//11441/98546
- URN
- urn:oai:idus.us.es:11441/98546
- Origin repository
- USE