The influence of MHD instabilities on the COMPASS-D H-mode threshold

被引：4

作者：

Fielding, SJ ^{[1
]}

Field, AR ^{[1
]}

Valovic, M ^{[1
]}

Wilson, HR ^{[1
]}

Carolan, PG ^{[1
]}

Connor, JW ^{[1
]}

Conway, NJ ^{[1
]}

Dowling, J ^{[1
]}

Lloyd, B ^{[1
]}

Morris, AW ^{[1
]}

机构：

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

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2000年 / 42卷

关键词：

D O I：

10.1088/0741-3335/42/5A/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：

Significant improvements have been made to edge diagnostics on COMPASS-D enabling detailed studies of the H-mode dynamics. New experiments have been carried out with current ramps in high-power ECR discharges to test the influence of the peeling mode on the low-density H-mode transition. Observations and analysis suggest that the peeling mode is not the controlling mechanism. Density-ramp experiments indicate that the edge electron pressure gradient is correlated with transition behaviour and links are made with global observations.

引用

页码：A191 / A197

页数：7

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