Application of advanced edge diagnostics for transport studies in the stochastic boundary of TEXTOR-DED

Journal Article · Wed Mar 19 04:00:00 EDT 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2909095· OSTI ID:21136894

Schmitz, O; Brezinsek, S; Clever, M; Coenen, J W; Finken, K H; Kantor, M; Kraemer-Flecken, A; Kruezi, U; Lehnen, M; Liang, Y; Reiter, D; Samm, U; Schweer, B; Stoschus, H; Telesca, G; Unterberg, B; Uzgel, E ^[1]; Classen, I; Delabie, E; Spakman, G W ^[2]

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1. Institut fuer Energieforschung 4--Plasmaphysik, Forschungszentrum Juelich GmbH in der Helmholtzgemeinschaft, Trilateral Euregio Cluster, Association Euratom-FZJ, D-52425 Juelich (Germany)
2. FOM-Institute for Plasma Physics Rijnhuizen, Trilateral Euregio Cluster, Association EURATOM-FOM, PO-Box 1207, 3430 BE Nieuwegein (Netherlands)

In this paper the edge diagnostic equipment at the TEXTOR tokamak is described and its importance for detailed transport studies in the helical ergodic divertor imposed by the dynamic ergodic divertor (DED) is demonstrated. The helical ergodic divertor topology is controlled by adapting the perturbation field base mode number, the perturbation field strength and the plasma equilibrium. As unique feature the DED perturbation field can be rotated with frequencies of up to 10kHz. The impact of the helical divertor field structure and the fast rotation of the external perturbation field on local transport properties is analyzed here on selected examples from the various edge diagnostics with high time and/or high spatial resolution.

• OSTI ID: 21136894
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 993; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BOUNDARY LAYERS
DISTURBANCES
ERGODIC DIVERTORS
PLASMA
PLASMA DIAGNOSTICS
RADIATION TRANSPORT
ROTATION
SPATIAL RESOLUTION
STOCHASTIC PROCESSES
TEXTOR TOKAMAK
TOPOLOGY