Characteristics of internal transport barriers in JT-60U reversed shear plasmas

被引：113

作者：

Sakamoto, Y ^{[1
]}

Kamada, Y ^{[1
]}

Ide, S ^{[1
]}

Fujita, T ^{[1
]}

Shirai, H ^{[1
]}

Takizuka, T ^{[1
]}

Koide, Y ^{[1
]}

Fukuda, T ^{[1
]}

Oikawa, T ^{[1
]}

Suzuki, T ^{[1
]}

Shinohara, K ^{[1
]}

Yoshino, R ^{[1
]}

机构：

[1] Japan Atom Energy Res Inst, Naka Fus Res Estab, Naka, Ibaraki 31101, Japan

来源：

NUCLEAR FUSION | 2001年 / 41卷 / 07期

关键词：

D O I：

10.1088/0029-5515/41/7/307

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 characteristics of internal transport barrier (ITB) structures are studied and active ITB control has been developed in JT-60U reversed shear plasmas. The following results are found. Outward propagation of ITBs with steep, T-i gradients is limited to the minimum safety factor location rho (qmin), However. ITBs with reduced T-i gradients can move to the outside of rho (qmin). The lower boundary of the ITB width is proportional to the ion poloidal gyroradius at the ITB centre. Furthermore, active control of the ITB strength based on modification of the radial electric field shear profile is successfully demonstrated ny toroidal momentum injection in different directions or an increase of heating power by neutral beams.

引用

页码：865 / 872

页数：8

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