Aachen PK 2003 – scientific programme
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P: Plasmaphysik
P 10: Poster II
P 10.16: Poster
Tuesday, March 18, 2003, 17:30–19:15, Foyer
The Atlas for the TEXTOR-DED operations — •M.W. Jakubowski1,2, S.S. Abdullaev1, and K.H. Finken1 — 1Institut für Plasmaphysik, Forschungszentrum Jülich GmbH, EURATOM Association,D-52425 Jülich, Germany, Partner in the Trilateral Euregio Cluster — 2University of Opole, Institute of Physics, Opole, Poland
The Dynamic Ergodic Divertor (DED) is installed in TEXTOR. Sixteen perturbation coils are mounted inside the vessel at the high field side. The main scientific goal of the DED in static and low frequency operation is to distribute power fluxes from the plasma core onto large area of the tokamak walls. Heat load can be smearedöver all target area by applying low frequency perturbation to the equilibrium magnetic field. The coils can be supplied either by DC or AC up to 10 kHz. Numerical calculations show that one can distinguish three areas in the plasma: the unperturbed core, ergodic and laminar regions. To investigate properties of magnetic field in the very edge a tool called ätlasïs created. The atlas contains four sets of graphs: Poincarè, laminar and footprints. Poincarè plots show intersections of field lines with a plane, that is perpendicular to main axis of the torus. Laminar plots extend Poincarè plots by adding information about connection lengths. Magnetic footprints plots visualise connection lengths of field lines according to the position, where they intersect with the wall. In the work outcomes are discussed.