Artículo
Approaching Detachment in I-mode - Response of Core Confinement and the Edge Pedestal in the ASDEX Upgrade Tokamak
Autor/es | Happel, T.
Reinke, M. L. Silvagni, D. Bernert, M. Grover, O. Hennequin, P. Hubbard, A. E. Plank, U. Trier, E. Brida, D. Viezzer, Eleonora |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2021 |
Fecha de depósito | 2023-01-11 |
Publicado en |
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Resumen | Experiments on nitrogen assisted divertor detachment in the improved energy confinement mode (I-mode) are reported from the ASDEX Upgrade tokamak. When nitrogen is introduced into the divertor and radiation losses cool the ... Experiments on nitrogen assisted divertor detachment in the improved energy confinement mode (I-mode) are reported from the ASDEX Upgrade tokamak. When nitrogen is introduced into the divertor and radiation losses cool the divertor plasma down, a loss of core confinement is observed, concomitant with an increase in low frequency edge fluctuation levels. The loss in confinement can be compensated and the I-mode can be maintained by additional heating power input. Detachment of the inner divertor leg has been observed for the first time in an I-mode discharge. The outer divertor leg remains attached in these experiments. Good energy confinement properties (H 98(y, 2) = 0.9) during the detachment of the inner divertor leg are reported. |
Agencias financiadoras | Euratom Research and Training Programme US Department of Energy |
Identificador del proyecto | 633053
DE-AC05-00OR22725 |
Cita | Happel, T. ., Reinke, M.L., Silvagni, D., Bernert, M., Grover, O., Hennequin, P.,...,Viezzer, E. (2021). Approaching Detachment in I-mode - Response of Core Confinement and the Edge Pedestal in the ASDEX Upgrade Tokamak. Nuclear Fusion, 61 (3), 036026. https://doi.org/10.1088/1741-4326/abd7b7. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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Approaching detachment.pdf | 2.350Mb | [PDF] | Ver/ | |