Confinement of fusion alpha-particles in JET hollow current equilibrium

被引：37

作者：

Yavorskij, V ^{[1
]}

Goloborod'ko, V

Schoepf, K

Sharapov, SE

Challis, CD

Reznik, S

Stork, D

机构：

[1] Univ Innsbruck, OEAW, EURATOM Assoc, Inst Theoret Phys, A-6020 Innsbruck, Austria

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

[3] Ukrainian Acad Sci, Inst Nucl Res, UA-252028 Kiev, Ukraine

来源：

NUCLEAR FUSION | 2003年 / 43卷 / 10期

关键词：

D O I：

10.1088/0029-5515/43/10/009

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 effect of a toroidal current hole on the first orbit (FO) loss and on the collisional loss of alpha particles in JET is investigated. Numerical results of predictive three-dimensional Fokker-Planck modelling of the distribution function of D-T fusion alphas in hollow current JET discharges are presented. If the current hole region is kept reasonably small, it induces only a moderate increase of FO losses as well as of the collisional loss of fast alphas. The current hole effect is shown to be qualitatively equivalent to a reduction of the total plasma current I. Hence, the alpha confinement degradation by the current hole profiles can be compensated by enlarging I.

引用

页码：1077 / 1090

页数：14

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