Influence of the safety factor profile on the particle and heat transport in the Globus-M spherical tokamak

被引：5

作者：

Telnova, A. Yu ^{[1
]}

Kurskiev, G. S. ^{[1
]}

Kiselev, E. O. ^{[1
]}

Bakharev, N. N. ^{[1
]}

Gusev, V. K. ^{[1
]}

Khromov, N. A. ^{[1
]}

Medvedev, S. Yu ^{[2
,3
]}

Miinaev, V. B. ^{[1
]}

Miroshnikov, I., V ^{[1
]}

Patrov, M., I ^{[1
]}

Petrov, Yu, V ^{[1
]}

Sakharov, N., V ^{[1
]}

Sladkomedova, A. D. ^{[1
]}

Shchegolev, P. B. ^{[1
]}

Solokha, V. V. ^{[1
]}

Tokarev, V. A. ^{[1
]}

Tolstyakov, S. Yu ^{[1
]}

Tukhmeneva, E. A. ^{[1
]}

机构：

[1] Ioffe Inst, St Petersburg 194021, Russia

[2] Russian Acad Sci, Keldysh Inst, Moscow 125047, Russia

[3] NRC Kurchatov Inst, Moscow 123098, Russia

来源：

PLASMA SCIENCE & TECHNOLOGY | 2019年 / 21卷 / 11期

关键词：

advanced tokamak mode; transport analysis; internal transport barriers; PLASMAS; PHYSICS; PINCH; CODE;

D O I：

10.1088/2058-6272/ab2ff6

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The advanced tokamak scenario is a promising operation scenario for ITER and fusion neutron sources. In this scenario the minimum value of the safety factor in the center of the plasma exceeds unity. In the compact spherical tokamak Globus-M, the formation of such conditions is possible with neutral beam injection at the current ramp-up phase. Due to the slower diffusion of current inside the plasma, a zone is formed with reduced heat and particle transport across the magnetic field, which affects the temperature and density profiles of the plasma. This leads to the peaked density profile formation and improvement of the energy confinement time. To achieve a high fraction of the bootstrap current, it is necessary to increase the plasma pressure. At the same time, the maximum allowable pressure is limited to the normalized beta limit.

引用

页数：6

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