Studies of giant ELM interaction with the divertor target in JET

被引：38

作者：

Lingertat, J

Tabasso, A

AliArshad, S

Alper, B

vanBelle, P

Borrass, K

Clement, S

Coad, JP

Monk, R

机构：

[1] UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,DEPT PLASMA PHYS,LONDON SW7 2BZ,ENGLAND

[2] MAX PLANCK INST PLASMA PHYS,D-85748 GARCHING,GERMANY

来源：

JOURNAL OF NUCLEAR MATERIALS | 1997年 / 241卷

关键词：

JET; tokamak; divertor plasma; 1d model; ELM;

D O I：

10.1016/S0022-3115(97)80072-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper we present an overview of recent studies of giant ELM interaction with the divertor target in JET. With 1D modelling, we reproduce the experimentally found time behaviour of the divertor plasma parameters and show the non-linear dependence of the particle flux and D-alpha intensity peak on the ELM power loss. Measurements of the impurity influx from the target plates show non-sputtering contributions. During ELMs we find a strong current of the order of magnitude of the ion saturation current flowing from the plasma to the target plate near both strike points. The magnitude of the total current is high enough to account for the observed movement of the strike points. The main plasma moves during the ELM vertically and horizontally in a characteristic way. The movement is best described by an n = 0, m = 1 mode.

引用

页码：402 / 407

页数：6