Flow generation and intermittent transport in the scrape-off-layer of the Tore Supra tokamak

• Published in: Journal of nuclear materials Vol. 390; pp. 368 - 371
• Main Authors: Fedorczak, N., Gunn, J.P., Ghendrih, Ph, Monier-Garbet, P., Pocheau, A.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 15.06.2009; Elsevier
• Subjects: Applied sciences; Controled nuclear fusion plants; Energy; Energy. Thermal use of fuels; Engineering Sciences; Exact sciences and technology; Fission nuclear power plants; Fluid mechanics; Fluids mechanics; Fuels; Installations for energy generation and conversion: thermal and electrical energy; Mechanics; Nuclear fuels; Physics; Plasma Physics; 52.55.Fa; 52.30.−q; 52.25.Fi; 52.25.Gj; Transport process; Tokamak; Nuclear fusion reactor; Scrape-off layer; Steady state; Nuclear reactor
• ISSN: 0022-3115; 1873-4820
• DOI: 10.1016/j.jnucmat.2009.01.076

Results on transport in the scrape-off-layer from a set of ohmic discharges in Tore Supra are discussed. The particle balance in the SOL is described trough a steady-state model that utilizes profile measurements from reciprocating-probes. Experimental evidence of the non-uniformity in the poloïdal distribution of particle outflux is found, with the highest outflux being concentrated in a narrow sector at the outboard midplane. High and intermittent fluctuations originating from the same outboard midplane sector are interpreted as the signature of the transport mechanisms that result in the time-averaged equilibrium. The radial convection of subsonic structures is assumed as the dominant transport process.