Confinement studies on the Wendelstein VII-AS stellarator
Confinement studies on the Wendelstein VII-AS stellarator
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Wendelstein VII-AS 仿星器的约束研究
DOI：
10.1088/0741-3335/32/11/008
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
F. Sardei
中科院分区：
文献类型：
--
作者：
H. Ringler;U. Gasparino;G. Kühner;H. Maassberg;H. Renner;F. Sardei
B_0 =2.5T的ECR加热在1990年的W VII-AS仿星器实验中得到了广泛的应用。由于这是一个低剪切实验的磁配置（特别是细节的旋转转换配置文件）敏感地依赖于等离子体电流（压力驱动，欧姆，EC驱动，Ohkawa电流），这反过来又有很强的影响能量和粒子约束性能。对于固定相的传输分析已经进行，产生的电子热传导和离子粒子扩散系数的配置文件。对前者进行了统计分析，得到了chi E和tau E的唯象表达式。第一个实验使用中性束注入（ECRH靶等离子体），以及组合加热（NBI+ECRH）进行了讨论。
ECR heating at B0=2.5T has been extensively used in the 1990 experimental period of the W VII-AS stellarator. As it is a low-shear experiment the magnetic configuration (especially details of the rotational transform profile) depends sensitively on plasma currents (pressure driven, ohmic, EC driven, Ohkawa current) which in turn have a strong influence on energy and particle confinement properties. For the stationary phase a transport analysis has been performed, yielding the profiles of the electron heat conduction and the ion particle diffusion coefficients. The former was subjected to a statistical analysis resulting in phenomenological expressions for chi e and tau E. First experiments using neutral beam injection (ECRH target plasma) as well as combined heating (NBI+ECRH) are also discussed.