Destabilization of fast-ion-induced long sawteeth by localized current drive in the JET tokamak

被引：105

作者：

Eriksson, LG ^{[1
]}

Mueck, A

Sauter, O

Coda, S

Mantsinen, MJ

Mayoral, ML

Westerhof, E

Buttery, RJ

McDonald, D

Johnson, T

Noterdaeme, JM

de Vries, P

机构：

[1] CEA Cadarache, DSM, DRFC, Assoc EURATOM, F-13108 St Paul Les Durance, France

[2] Max Planck IPP EURATOM Assoziat, Garching, Germany

[3] CRPP EPFL, EURATOM Confederat Suisse, Lausanne, Switzerland

[4] Helsinki Univ Technol, Assoc Euratom Tekes, FIN-02150 Espoo, Finland

[5] UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon, Oxon, England

[6] TEC, FOM Rijnhuizen, Assoc EURATOM FOM, Nieuwegein, Netherlands

[7] Euratom VR Assoc, Stockholm, Sweden

[8] State Univ Ghent, Dept EESA, B-9000 Ghent, Belgium

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.92.235004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In a tokamak fusion reactor the energetic alpha particles will transiently stabilize the magnetohydrodynamic activity causing sawtooth oscillations. The crash events terminating long sawtooth free periods can provide seed islands for neoclassical tearing modes [O. Sauter et al., Phys. Rev. Lett. 88, 105001 (2002)]. To shorten the sawtooth periods localized current drive near the q=1 surface is a possibility. This Letter provides the first experimental evidence for the effectiveness of this method in the different physics regime associated with fast-ion-induced long sawteeth on the JET tokamak.

引用

页码：235004 / 1

页数：4

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