Effect of low magnetic shear induced by lower hybrid current drive on high performance internal transport barriers in the Joint European Torus (JET)

被引：29

作者：

Castaldo, C

Cesario, R

Cardinali, A

Litaudon, X

Mailloux, J

Parail, V

Tala, T

Crisanti, F

Gormezano, C

Panaccione, L

Santini, F

Smeulders, P

Tuccillo, AA

机构：

[1] EURATOM, ENEA Sulla Fus, Ctr Ric Frascati, I-00044 Frascati, Italy

[2] EURATOM, CEA, St Paul Les Durance, France

[3] UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

来源：

PHYSICS OF PLASMAS | 2002年 / 9卷 / 08期

关键词：

D O I：

10.1063/1.1488951

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：

A low/negative magnetic shear profile is maintained in the Joint European Torus in a plasma target with plasma current of 2.4 MA using 2.2 MW of lower hybrid (LH) power combined with neutral beam injection and ion cyclotron radiofrequency heating. In this scenario, an internal transport barrier (ITB) with time duration up to about 4 s is produced. The fraction of LH driven current is about 25% the total plasma current. During LH power application, the layer with reversed shear q-profile can be maintained in a suitable radial position to inhibit the onset of turbulence, which might otherwise drive the ITB to collapse. LH power could be used as a tool to drive moderate amounts of noninductive off-axis current and sustain high performance ITBs at high plasma current. (C) 2002 American Institute of Physics.

引用

页码：3205 / 3208

页数：4

共 29 条

[1] Overview of ITER-FEAT - The future international burning plasma experiment [J].

Aymar, R ;

Chuyanov, VA ;

Huguet, T ;

Shimomura, Y .

NUCLEAR FUSION, 2001, 41 (10) :1301-1310

[2]

BECOULET A, 2001, PLASMA PHYS CONTROLL, V43, P1

[3]

Cardinali A, 2000, RRD PLASMAS, V1, P185

[4]

CENACCHI G, 1986, COMPUTATIONAL PHYSIC, V10, P57

[5]

CESARIO R, IN PRESS EFDA JET RE

[6]

CHALLIS C, IN PRESS PLASMA PHYS

[7] Effect of q-profile modification by LHCD on internal transport barriers in JET [J].

Challis, CD ;

Baranov, YF ;

Conway, GD ;

Gormezano, C ;

Gowers, CW ;

Hawkes, NC ;

Hender, TC ;

Joffrin, E ;

Mailloux, J ;

Mazon, D ;

Podda, S ;

Prentice, R ;

Rimini, FG ;

Sharapov, SE ;

Sips, ACC ;

Stratton, BC ;

Testa, D ;

Zastrow, KD .

PLASMA PHYSICS AND CONTROLLED FUSION, 2001, 43 (07) :861-879

[8]

CRISANTI F, IN PRESS PHYS REV LE

[9] THEORY OF CURRENT DRIVE IN PLASMAS [J].

FISCH, NJ .

REVIEWS OF MODERN PHYSICS, 1987, 59 (01) :175-234

[10] Internal transport barrier for electrons in JT-60U reversed shear discharges [J].

Fujita, T ;

Ide, S ;

Shirai, H ;

Kikuchi, M ;

Naito, O ;

Koide, Y ;

Takeji, S ;

Kubo, H ;

Ishida, S .

PHYSICAL REVIEW LETTERS, 1997, 78 (12) :2377-2380

← 1 2 3 →