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Analysis of pressure profiles and transport simulations of MAST discharges

Yu N Dnestrovskij1, J W Connor2, S V Cherkasov1, A V Danilov1, A Yu Dnestrovskij1, S E Lysenko1, C M Roach2 and M Walsh2

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A transport model for the electron and ion temperatures and plasma density, based on the conservation of the temperature and pressure profiles (the so-called 'canonical profiles transport model' (CPTM)), is applied to simulate both Ohmic and NBI discharges in MAST. This model is justified by the plasma pressure profiles analysis for MAST. It is shown that these profiles tend to be conserved in the gradient zone during the discharge evolution and under variation of the plasma density and deposited power. A comparison of the results of calculations with the CPTM with experimental data is carried out. Examples of transport analysis for some MAST shots are presented.


PACS

52.25.Fi Transport properties

52.50.Gj Plasma heating by particle beams

52.50.Nr Plasma heating by DC fields; ohmic heating, arcs

52.55.Fa Tokamaks, spherical tokamaks

Subjects

Plasma physics

Dates

Issue 9 (September 2007)

Received 24 May 2007, in final form 15 June 2007

Published 1 August 2007



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