Artículo
Impact of the JET ITER-like wall on H-mode plasma fueling
Autor/es | Wiesen, S.
Brezinsek, S. Wischmeier, M. Luna, E. de la Groth, M. Jet Contributors García Muñoz, Manuel |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2017-06 |
Fecha de depósito | 2020-08-25 |
Publicado en |
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Resumen | JET ITER-like wall (ILW) experiments show that the edge density evolution is strongly
linked with the poloidal distribution of the ionization source. The fueling profile in the
JET-ILW is more delocalized as compared to ... JET ITER-like wall (ILW) experiments show that the edge density evolution is strongly linked with the poloidal distribution of the ionization source. The fueling profile in the JET-ILW is more delocalized as compared to JET-C (JET with carbon-based plasma-facing components PFCs). Compared to JET-C the H-mode pedestal fueling cycle is dynamically influenced by a combination of plasma–wall interaction features, in particular: (1) edgelocalized modes (ELMs) induced energetic particles are kinetically reflected on W divertor PFCs leading to distributed refueling away from the divertor depending on the divertor plasma configuration, (2) delayed molecular re-emission and outgassing of particles being trapped in W PFCs (bulk-W at the high field side and W-coated CFCs at the low field side) with different fuel content and (3) outgassing from Be co-deposits located on top of the highfield side baffle region shortly after the ELM. In view of the results of a set of well diagnosed series of JET-ILW type-I ELMy H-mode discharges with good statistics, the aforementioned effects are discussed in view of H-mode pedestal fueling capacity. The ongoing modelling activities with the focus on coupled core-edge plasma simulations and plasma–wall interaction are described and discussed also in view of possible code improvements required. |
Identificador del proyecto | 633053 |
Cita | Wiesen, S., Brezinsek, S., Wischmeier, M., De la Luna, E., Groth, M., Jet Contributors, y García Muñoz, M. (2017). Impact of the JET ITER-like wall on H-mode plasma fueling. Nuclear Fusion, 57 (6), 066024-. |
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