Number of the records: 1
Approaching detachment in I-mode Response of core confinement and the edge pedestal in the ASDEX Upgrade tokamak
- 1.
SYSNO ASEP 0555702 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Approaching detachment in I-mode Response of core confinement and the edge pedestal in the ASDEX Upgrade tokamak Author(s) Happel, T. (DE)
Reinke, M.L. (GB)
Silvagni, D. (DE)
Bernert, M. (DE)
Grover, Ondřej (UFP-V) ORCID
Hennequin, P. (FR)
Hubbard, A. E. (US)
Plank, U. (DE)
Trier, E. (DE)
Brida, D. (DE)
David, P. (DE)
Fischer, R. (DE)
Gil, L. (PT)
Höfler, K. (DE)
Manz, P. (DE)
McDermott, R.M. (DE)
Merle, A. (FR)
Stroth, U. (DE)
Viezzer, E. (DE)
Willensdorfer, M. (DE)Number of authors 20 Article number 036026 Source Title Nuclear Fusion. - : Institute of Physics Publishing - ISSN 0029-5515
Roč. 61, č. 3 (2021)Number of pages 11 s. Language eng - English Country AT - Austria Keywords confinement regime ; detachment ; ELM-free ; I-mode ; nitrogen seeding ; tokamak Subject RIV BL - Plasma and Gas Discharge Physics OECD category Fluids and plasma physics (including surface physics) Method of publishing Limited access Institutional support UFP-V - RVO:61389021 UT WOS 000619561900001 EID SCOPUS 85102195420 DOI 10.1088/1741-4326/abd7b7 Annotation 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. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2022 Electronic address https://iopscience.iop.org/article/10.1088/1741-4326/abd7b7
Number of the records: 1