Position dependence of the unstable vertical movement of JET plasmas triggered by ELMs

被引:15
作者
Villone, F
Riccardo, V
Sartori, F
机构
[1] Univ Cassino, DAEIMI, CREATE, ENEA,Ass EURATOM, I-03043 Cassino, FR, Italy
[2] UKAEA, Fus Assoc, Culham Sci ctr, EURATOM, Abingdon OX14 3DB, Oxon, England
关键词
D O I
10.1088/0029-5515/45/11/014
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
In this paper we report the results of a set of dedicated experiments carried out at JET, aimed at studying the spatial dependence of the excitation of the unstable mode following an edge localized mode (ELM). A dependence of the excitation of the unstable mode on the pre-ELM vertical position can indeed be found, although a neutral point is not present in the explored range. The CREATE-L linearized plasma response model is used to reliably estimate the growth rate and discuss a correct global characterization of ELMs from the point of view of simplified modelling for control. The results indicate that a drop of pressure energy alone is not sufficient but that an increase of magnetic energy should be included.
引用
收藏
页码:1328 / 1341
页数:14
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