A flowing liquid lithium limiter for the Experimental Advanced Superconducting Tokamak.
A flowing liquid lithium limiter for the Experimental Advanced Superconducting Tokamak.
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DOI：
10.1063/1.4907622
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发表时间：
2015-02
期刊：
影响因子：
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通讯作者：
J. Ren;G. Zuo;Jiansheng Hu;Z. Sun;Q. Yang;Li Jun;Leonid E. Zakharov;Hong-Ming Xie;Zhenhua Chen
中科院分区：
文献类型：
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作者：
J. Ren;G. Zuo;Jiansheng Hu;Z. Sun;Q. Yang;Li Jun;Leonid E. Zakharov;Hong-Ming Xie;Zhenhua Chen
2009年，中国科学院等离子体物理研究所启动了一个项目，广泛而系统地使用锂（Li）作为托卡马克聚变研究装置的“第一”或面向等离子体的表面。Li涂层在实验先进超导托卡马克（EAST）和HT-7托卡马克的液体Li限制器上的应用取得了许多显著的成果。为了进一步推进锂计划，为EAST设计并制造了流动液体锂（FLiLi）限流器系统。FLiLi限位器的设计基于先前在HT-7中测试过的薄流动膜的概念。利用EAST上现有的材料和等离子体评估系统的能力，限制器将被Li预湿，并在等离子体放电时机械地转移到EAST的边缘。该限制器将采用一种新型的电磁泵，该泵被设计用于驱动液态锂从限制器底部的收集器流向其顶部的分配器，从而向湿润的等离子体表面提供连续流动的液态锂膜。本文重点介绍了FLiLi限幅器的主要设计要素。此外，对入射热流密度的模拟表明，限制器表面的热流密度分布可以用于未来EAST上的抽电试验。
A program involving the extensive and systematic use of lithium (Li) as a "first," or plasma-facing, surface in Tokamak fusion research devices located at Institute of Plasma Physics, Chinese Academy of Sciences, was started in 2009. Many remarkable results have been obtained by the application of Li coatings in Experimental Advanced Superconducting Tokamak (EAST) and liquid Li limiters in the HT-7 Tokamak-both located at the institute. In furtherance of the lithium program, a flowing liquid lithium (FLiLi) limiter system has been designed and manufactured for EAST. The design of the FLiLi limiter is based on the concept of a thin flowing film which was previously tested in HT-7. Exploiting the capabilities of the existing material and plasma evaluation system on EAST, the limiter will be pre-wetted with Li and mechanically translated to the edge of EAST during plasma discharges. The limiter will employ a novel electro-magnetic pump which is designed to drive liquid Li flow from a collector at the bottom of limiter into a distributor at its top, and thus supply a continuously flowing liquid Li film to the wetted plasma-facing surface. This paper focuses on the major design elements of the FLiLi limiter. In addition, a simulation of incoming heat flux has shown that the distribution of heat flux on the limiter surface is acceptable for a future test of power extraction on EAST.