Počet záznamů: 1
Latest investigations on fluctuations, ELM filaments and turbulent transport in the SOL of ASDEX Upgrade
0363749 - UFP-V 2012 RIV AT eng J - Článek v odborném periodiku
Müller, H. W. - Adámek, Jiří - Cavazzana, R. - Conway, G.D. - Fuchs, C. - Gunn, J. P. - Herrmann, A. - Horáček, Jan - Ionita, C. - Kallenbach, A. - Kočan, M. - Maraschek, M. - Maszl, C. - Mehlmann, F. - Nold, B. - Peterka, M. - Rohde, V. - Schweinzer, J. - Schrittwieser, R. - Vianello, N. - Wolfrum, E. - Zuin, M.
Latest investigations on fluctuations, ELM filaments and turbulent transport in the SOL of ASDEX Upgrade.
Nuclear Fusion. Roč. 51, č. 7 (2011), 073023-073023 ISSN 0029-5515
Grant CEP: GA AV ČR KJB100430901
Výzkumný záměr: CEZ:AV0Z20430508
Klíčová slova: SOL * ASDEX * ELM * tokamak * ball-pen * H-mode
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
Impakt faktor: 4.090, rok: 2011
This paper presents turbulence investigations in the scrape-off layer (SOL) of ASDEX Upgrade in ohmic, L-mode and H-mode discharges using electrostatic and electromagnetic probes. Detailed studies are performed on small scale turbulence and on ELM filaments. Simultaneous measurements of floating and plasma potential fluctuations revealed significant differences between these quantities. Large errors can occur when the electric field is extracted from floating potential measurements, even in ohmic discharges. Turbulence studies in ohmic plasmas show the existence of density holes inside the separatrix and blobs outside. Close to the separatrix a reversal of the poloidal blob propagation velocity occurs. Investigations on the Reynolds stress in the scrape-off layer (SOL) show its importance for the momentum transport in L-mode while its impact for momentum transport during ELMs in H-mode is rather small. In the far SOL the electron density and temperature were measured during
Trvalý link: http://hdl.handle.net/11104/0199427