Simulation of plasma density evolution in the T-10 tokamak
- Authors: Dnestrovskij Y.N.1, Vershkov V.A.1, Danilov A.V.1, Dnestrovskij A.Y.1, Zenin V.N.1, Lysenko S.E.1, Melnikov A.V.1, Shelukhin D.A.1, Subbotin G.F.1, Cherkasov S.V.1
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Affiliations:
- National Research Centre Kurchatov Institute
- Issue: Vol 42, No 3 (2016)
- Pages: 191-209
- Section: Tokamaks
- URL: https://journals.rcsi.science/1063-780X/article/view/185622
- DOI: https://doi.org/10.1134/S1063780X16030053
- ID: 185622
Cite item
Abstract
Analysis of the experimental profiles of the plasma density and pressure in the T-10 tokamak shows that in the plasma core they are close to the corresponding canonical profiles. This allows one to construct an expression for the particle flux in terms of the canonical profile model. T-10 experiments performed with ohmic discharges have revealed transitions from improved to low particle confinement, similar to the effect of the density pump-out from the central part of the plasma upon switching-on of the electron cyclotron resonance heating (ECRH). It is shown that such a change in the particle confinement is associated with the deviation of the radial pressure profile from the canonical one. A nonlinear model of particle transport in discharges with density variations that allows for the transition effects is proposed. The plasma density evolution is numerically simulated for a number of ohmic and ECRH T-10 discharges.
About the authors
Yu. N. Dnestrovskij
National Research Centre Kurchatov Institute
Author for correspondence.
Email: Dnestrovskiy_YN@nrcki.ru
Russian Federation, pl. Akademika Kurchatova 1, Moscow, 123182
V. A. Vershkov
National Research Centre Kurchatov Institute
Email: Dnestrovskiy_YN@nrcki.ru
Russian Federation, pl. Akademika Kurchatova 1, Moscow, 123182
A. V. Danilov
National Research Centre Kurchatov Institute
Email: Dnestrovskiy_YN@nrcki.ru
Russian Federation, pl. Akademika Kurchatova 1, Moscow, 123182
A. Yu. Dnestrovskij
National Research Centre Kurchatov Institute
Email: Dnestrovskiy_YN@nrcki.ru
Russian Federation, pl. Akademika Kurchatova 1, Moscow, 123182
V. N. Zenin
National Research Centre Kurchatov Institute
Email: Dnestrovskiy_YN@nrcki.ru
Russian Federation, pl. Akademika Kurchatova 1, Moscow, 123182
S. E. Lysenko
National Research Centre Kurchatov Institute
Email: Dnestrovskiy_YN@nrcki.ru
Russian Federation, pl. Akademika Kurchatova 1, Moscow, 123182
A. V. Melnikov
National Research Centre Kurchatov Institute
Email: Dnestrovskiy_YN@nrcki.ru
Russian Federation, pl. Akademika Kurchatova 1, Moscow, 123182
D. A. Shelukhin
National Research Centre Kurchatov Institute
Email: Dnestrovskiy_YN@nrcki.ru
Russian Federation, pl. Akademika Kurchatova 1, Moscow, 123182
G. F. Subbotin
National Research Centre Kurchatov Institute
Email: Dnestrovskiy_YN@nrcki.ru
Russian Federation, pl. Akademika Kurchatova 1, Moscow, 123182
S. V. Cherkasov
National Research Centre Kurchatov Institute
Email: Dnestrovskiy_YN@nrcki.ru
Russian Federation, pl. Akademika Kurchatova 1, Moscow, 123182