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Far-reaching Impact of Intermittent Transport across the Scrape-off Layer: Latest Results from ASDEX Upgrade
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SYSNO ASEP 0383822 Document Type O - Others R&D Document Type Others Title Far-reaching Impact of Intermittent Transport across the Scrape-off Layer: Latest Results from ASDEX Upgrade Author(s) Kočan, M. (DE)
Müller, W. (DE)
Adámek, Jiří (UFP-V) RID, ORCID
Conway, G. (DE)
de Marné, P. (DE)
Eich, T. (DE)
Fischer, R. (DE)
Fuchs, C. (DE)
Gennrich, F. (AT)
Herrmann, A. (DE)
Horáček, Jan (UFP-V) RID, ORCID
Huang, Z. (DE)
Ionita, C. (AT)
Kallenbach, A. (DE)
Komm, Michael (UFP-V) RID, ORCID
Lunt, T. (DE)
Maraschek, M. (DE)
Maszl, Chr. (AT)
Mehlmann, F. (AT)
Müller, S. (DE)
Nold, B. (DE)
Ribeiro, T. (DE)
Rohde, V. (DE)
Schrittwieser, R. (AT)
Scott, B. (DE)
Stroth, U. (DE)
Suttrop, W. (DE)
Wolfrum, E. (DE)Year of issue 2012 Source Title Conference proceedings of 24th IAEA Fusion Energy Conference (FEC 2012), IAEA CN-197, 41985 (F1-CN-197). - San Diego : International Atomic Energy Agency (IAEA), 2012 - ISBN N
"EX/P7-23"-"EX/P7-23"Number of pages 8 s. Publication form Online - E Action IAEA Fusion Energy Conference/24./ Event date 08.10.2012-13.10.2012 VEvent location San Diego Country US - United States Event type WRD Language eng - English Country US - United States Keywords ASDEX Upgrade ; plasma ; tokamak Subject RIV BL - Plasma and Gas Discharge Physics R&D Projects GAP205/12/2327 GA ČR - Czech Science Foundation (CSF) 7G10072 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LA08048 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z20430508 - UFP-V (2005-2011) Annotation Latest research of intermittent transport in SOL of the ASDEX Upgrade tokamak is presented. Near the separatrix the fluctuations of the plasma and the floating potentials, measured by various Langmuir probes (LPs), are found to be anti-correlated due to fluctuations of the electron temperature. This indicates that, in contrast to a widely used experimental practice, a free exchange of both potentials is unjustified and can lead to significant error. Measurements of ion energies in turbulent L-mode and ELM filaments were carried out using a retarding field analyzer. In L-mode plasma, the filament ion temperature measured at 2 cm outside the separatrix is 80-110 eV, i.e., 3-4x the background ion temperature. The paper discusses further many other related topics. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2013
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