Interaction of ELMs and fast particles with in-vessel components in ASDEX Upgrade
Interaction of ELMs and fast particles with in-vessel components in ASDEX Upgrade
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ASDEX Upgrade 中 ELM 和快速粒子与容器内组件的相互作用
DOI：
10.1016/j.jnucmat.2004.10.126
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
M. Ye
中科院分区：
文献类型：
--
作者：
A. Herrmann;J. Neuhauser;V. Rohde;R. Dux;T. Eich;C. Fuchs;M. Ye
在ASDEX Upgrade中，研究了elm和快速粒子在导流器外面向等离子体的组件上的热沉积。在限制器上的elm期间，热通量高达每平方米数十兆瓦，在两者之间每平方米几兆瓦。非导流结构上的总沉积功率可达加热功率的10%，必须考虑下一步的高功率实验。观察到的热负荷模式背后的机制是定性理解。主要贡献来自中性束注入（和离子回旋加速器）加热产生的快速离子，以及等离子体边缘的ELMy能量爆发。
Heat deposition onto plasma facing components outside the divertor by ELMs and fast particles has been investigated in ASDEX Upgrade. Heat fluxes up to tens of megawatts per square meter are found during ELMs on limiters and a few megawatts per square meter in between. The total deposited power on non-divertor structures can be up to 10% of the heating power and has to be considered for high power next step experiments. The mechanisms behind the observed heat load patterns are qualitatively understood. The main contributions come from fast ions created by neutral beam injection (and ion cyclotron minority) heating, and from ELMy energy bursts from the plasma edge.