Improvement of plasma energy confinement in tokamak under radiative cooling of the edge plasma


Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

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


© Pleiades Publishing, Ltd., 2017

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