A tutorial on some basic aspects of divertor physics

被引：25

作者：

Stangeby, PC

机构：

[1] Univ Toronto, Inst Aerosp Studies, Toronto, ON M3H 5T6, Canada

[2] Gen Atom, San Diego, CA 92186 USA

[3] JET, Abingdon OX14 3DB, Oxon, England

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2000年 / 42卷 / 12 SUPPL. B期

关键词：

D O I：

10.1088/0741-3335/42/12B/321

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：

Some of the basic aspects of the scrape-off layer, SOL, of magnetically confined plasmas are reviewed. SOLs defined by limiters and diverters are compared. The role of parallel heat convection versus conduction is considered and the relation to the desired condition of large del T-parallel to along the SOL is assessed. A very simple SOL model is developed to calculate the two-dimensional 'fields' in the SOL, i.e. T(s(parallel to),s(perpendicular to)), n(s(parallel to), s(perpendicular to)), using measured boundary conditions from Langmuir probes built into divertor targets or limiters. The model is applied to a DIII-D discharge and comparisons are made between the model and measurements made by Thomson scattering and photodiodes. Values of D-perpendicular to(SOL) and chi (SOL)(perpendicular to) are extracted from the experimental data using the simple model.

引用

页码：B271 / B291

页数：21

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