Measurement and calculation of the radial electric field in the stellarator W7-AS

被引:64
作者
Baldzuhn, J [1 ]
Kick, M [1 ]
Maassberg, H [1 ]
机构
[1] Max Planck Inst Plasma Phys, EURATOM Assoc, D-85748 Garching, Germany
关键词
D O I
10.1088/0741-3335/40/6/006
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
At the advanced stellarator W7-AS, active charge exchange recombination spectroscopy (CXRS) is used to measure the toroidal and poloidal impurity rotation velocity. The radial electric field E-r is determined experimentally from the radial force balance equation. In parallel, E-r is calculated by means of the neoclassical drift kinetic equation solver (DKES) transport code. Neoclassical calculation and measurement are, in general, in good agreement. A selection of discharges is presented in this paper which shows typical properties of E-r at W7-AS, and which highlights the mutual relationship between E-r and transport.
引用
收藏
页码:967 / 986
页数:20
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