Enviar artigo por via de e-mail Improvement of plasma energy confinement in tokamak under radiative cooling of the edge plasma
- Autores: Razumova K.1, Borschegovskiy A.1, Gorbunov E.1, Dremin M.1, Kasyanova N.1, Kirneva N.1,2, Kislov A.1, Klyuchnikov L.1, Krupin V.1, Krylov S.1, Lysenko S.1, Melnikov A.1,2, Myalton T.1, Nemets A.1, Notkin G.1, Nurgaliev M.1, Sarychev D.1, Sushkov A.1, Chistyakov V.1, Ongena J.3, Messiaen A.3
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Afiliações:
- National Research Center “Kurchatov Institute,”
- National Research Nuclear University “MEPhI,”
- Laboratory for Plasma Physics–ERM/KMS
- Edição: Volume 43, Nº 11 (2017)
- Páginas: 1043-1051
- Seção: Tokamaks
- URL: https://journals.rcsi.science/1063-780X/article/view/186271
- DOI: https://doi.org/10.1134/S1063780X1711006X
- ID: 186271
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Resumo
Improvement of plasma energy confinement in the T-10 tokamak by injection of impurity gases was studied experimentally. Injection of Ne and He in the ohmic and ECR heating regimes allows one to separate the dependences of energy confinement on the plasma density and on the edge plasma cooling rate. It is shown that the well-known dependence of the energy confinement time on the plasma density is, in fact, the dependence on the radiative loss power. This phenomenon can be explained by plasma self-organization. The experiments are described by a thermodynamic model for self-organized plasma in which the transport coefficient depends on the difference between the actual and self-consistent pressure profiles. The reduction in the heat flux at the plasma edge due to radiative cooling leads to a decrease in the transport coefficient in this region and, accordingly, improves energy confinement. Results of approximate model calculations for experiments with Ne injection are presented.
Sobre autores
K. Razumova
National Research Center “Kurchatov Institute,”
Autor responsável pela correspondência
Email: Razumova_KA@nrcki.ru
Rússia, Moscow, 123182
A. Borschegovskiy
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Rússia, Moscow, 123182
E. Gorbunov
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Rússia, Moscow, 123182
M. Dremin
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Rússia, Moscow, 123182
N. Kasyanova
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Rússia, Moscow, 123182
N. Kirneva
National Research Center “Kurchatov Institute,”; National Research Nuclear University “MEPhI,”
Email: Razumova_KA@nrcki.ru
Rússia, Moscow, 123182; Moscow, 115409
A. Kislov
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Rússia, Moscow, 123182
L. Klyuchnikov
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Rússia, Moscow, 123182
V. Krupin
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Rússia, Moscow, 123182
S. Krylov
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Rússia, Moscow, 123182
S. Lysenko
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Rússia, Moscow, 123182
A. Melnikov
National Research Center “Kurchatov Institute,”; National Research Nuclear University “MEPhI,”
Email: Razumova_KA@nrcki.ru
Rússia, Moscow, 123182; Moscow, 115409
T. Myalton
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Rússia, Moscow, 123182
A. Nemets
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Rússia, Moscow, 123182
G. Notkin
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Rússia, Moscow, 123182
M. Nurgaliev
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Rússia, Moscow, 123182
D. Sarychev
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Rússia, Moscow, 123182
A. Sushkov
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Rússia, Moscow, 123182
V. Chistyakov
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Rússia, Moscow, 123182
J. Ongena
Laboratory for Plasma Physics–ERM/KMS
Email: Razumova_KA@nrcki.ru
Bélgica, Brussels
A. Messiaen
Laboratory for Plasma Physics–ERM/KMS
Email: Razumova_KA@nrcki.ru
Bélgica, Brussels
