SCRAPE-OFF LAYER BASED MODELING OF THE DENSITY LIMIT IN BERYLLATED JET LIMITER DISCHARGES

被引:33
作者
BORRASS, K [1 ]
CAMPBELL, DJ [1 ]
CLEMENT, S [1 ]
VLASES, GC [1 ]
机构
[1] MAX PLANCK INST PLASMA PHYS,NET TEAM,W-8046 GARCHING,GERMANY
关键词
D O I
10.1088/0029-5515/33/1/I06
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 paper gives a scrape-off layer based interpretation of the density limit in beryllated JET limiter discharges. In these discharges, JET edge parameters show a complicated time evolution as the density limit is approached and the limit is manifested as a non-disruptive density maximum which cannot be exceeded by enhanced gas puffing. The occurrence of Marfes, the manner of density control and details of recycling are essential elements of the interpretation. Scalings for the maximum density are given and compared with JET data. The relation to disruptive density limits, previously observed in JET carbon limiter discharges, and to density limits in divertor discharges is discussed.
引用
收藏
页码:63 / 76
页数:14
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