Improvement of plasma energy confinement in tokamak under radiative cooling of the edge plasma
- Авторлар: 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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Мекемелер:
- National Research Center “Kurchatov Institute,”
- National Research Nuclear University “MEPhI,”
- Laboratory for Plasma Physics–ERM/KMS
- Шығарылым: Том 43, № 11 (2017)
- Беттер: 1043-1051
- Бөлім: Tokamaks
- URL: https://journals.rcsi.science/1063-780X/article/view/186271
- DOI: https://doi.org/10.1134/S1063780X1711006X
- ID: 186271
Дәйексөз келтіру
Аннотация
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.
Авторлар туралы
K. Razumova
National Research Center “Kurchatov Institute,”
Хат алмасуға жауапты Автор.
Email: Razumova_KA@nrcki.ru
Ресей, Moscow, 123182
A. Borschegovskiy
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Ресей, Moscow, 123182
E. Gorbunov
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Ресей, Moscow, 123182
M. Dremin
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Ресей, Moscow, 123182
N. Kasyanova
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Ресей, Moscow, 123182
N. Kirneva
National Research Center “Kurchatov Institute,”; National Research Nuclear University “MEPhI,”
Email: Razumova_KA@nrcki.ru
Ресей, Moscow, 123182; Moscow, 115409
A. Kislov
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Ресей, Moscow, 123182
L. Klyuchnikov
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Ресей, Moscow, 123182
V. Krupin
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Ресей, Moscow, 123182
S. Krylov
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Ресей, Moscow, 123182
S. Lysenko
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Ресей, Moscow, 123182
A. Melnikov
National Research Center “Kurchatov Institute,”; National Research Nuclear University “MEPhI,”
Email: Razumova_KA@nrcki.ru
Ресей, Moscow, 123182; Moscow, 115409
T. Myalton
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Ресей, Moscow, 123182
A. Nemets
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Ресей, Moscow, 123182
G. Notkin
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Ресей, Moscow, 123182
M. Nurgaliev
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Ресей, Moscow, 123182
D. Sarychev
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Ресей, Moscow, 123182
A. Sushkov
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Ресей, Moscow, 123182
V. Chistyakov
National Research Center “Kurchatov Institute,”
Email: Razumova_KA@nrcki.ru
Ресей, Moscow, 123182
J. Ongena
Laboratory for Plasma Physics–ERM/KMS
Email: Razumova_KA@nrcki.ru
Бельгия, Brussels
A. Messiaen
Laboratory for Plasma Physics–ERM/KMS
Email: Razumova_KA@nrcki.ru
Бельгия, Brussels