Simulation of ASDEX Upgrade Ohmic plasmas for SOLPS code validation

SOLPS simulation of a dedicated ASDEX Upgrade Ohmic shot for scrape-off layer and divertor modelling is described. The tendency of the code to predict a colder and denser divertor plasma compared with the experiment for solutions that satisfy main boundary conditions (on the input power across the c...

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Bibliographic Details
Published in:Nuclear fusion 2009-01, Vol.49 (1), p.015004-015004 (10)
Main Authors: Chankin, A.V, Coster, D.P, Dux, R, Fuchs, Ch, Haas, G, Herrmann, A, Horton, L.D, Kallenbach, A, Kurzan, B, Müller, H.W, Pugno, R, Wischmeier, M, Wolfrum, E
Format: Article
Language:English
Subjects:
Exact sciences and technology
Magnetic confinement and equilibrium
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Plasma heating by dc fields
ohmic heating, arcs
Plasma production and heating
Power exhaust
divertors
Tokamaks
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Summary:SOLPS simulation of a dedicated ASDEX Upgrade Ohmic shot for scrape-off layer and divertor modelling is described. The tendency of the code to predict a colder and denser divertor plasma compared with the experiment for solutions that satisfy main boundary conditions (on the input power across the core/edge boundary, particle throughput and radiated power) and match upstream profiles is confirmed. Issues related to the role of neutral sources and sinks are discussed. In the interpretative modelling based on experimental upstream profiles, neither the neutral pressure in the divertor nor the method of fuelling was found to strongly influence the parameters at the outer target, which are primarily determined by the input power and separatrix density.
ISSN:0029-5515
1741-4326
DOI:10.1088/0029-5515/49/1/015004