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法拉第屏蔽是EAST 装置 ICRF天线的一个重要部件。鉴于法拉第屏蔽的结构安全性,通过运用有限元方法和公式对法拉第屏蔽在等离子体破裂和等离子体垂直位移事件两种工况下进行电磁和结构分析,获得了法拉第屏蔽在这两种工况下所受的电磁力、应力分布和变形情况。分析结果满足设计要求,并为法拉第屏蔽的结构安全性评估提供理论依据。 相似文献
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This paper considers the coupling analysis of phased antenna array designed to excite fast wave in the ion cyclotron range of frequency. The coupling of the antenna is calculated in slab geometry. The coupling code based on the variational principle gives the self-consistent current flowing in the antenna, this method has been extended so that it can be applied to a phased antenna array. As an example, this paper analyses the coupling prosperities of a 2 × 2 phased antenna array. It gives the optimum geometry of antenna array. The fields excited at plasma surface are found to more or less correspond to the antenna current phasing. 相似文献
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为了寻求一种快速鉴别分析不同产地和陈化年限的普洱熟茶科学的方法,本文采用表面增强拉曼散射光谱技术,在600~1 800cm-1的拉曼波段比较了云南三大普洱茶产地和四个不同陈化年限的普洱熟茶的拉曼光谱的异同点。结果:不同产地和陈化年限的普洱熟茶的拉曼光谱走势基本一致,但是由于不同产地和陈化年限的普洱熟茶之间的化学成分存在着差异,导致它们的拉曼光谱之间存在着明显的差别,利用这些差别可以快速、简便鉴别分析不同产地和陈化年限的普洱熟茶。 相似文献
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The propagation dynamics of the Airy Gaussian vortex beams in uniaxial crystals orthogonal to the optical axis has been investigated analytically and numerically. The propagation expression of the beams has been obtained. The propagation features of the Airy Gaussian vortex beams are shown with changes of the distribution factor and the ratio of the extraordinary refractive index to the ordinary refractive index. The correlations between the ratio and the maximum intensity value during the propagation, and its appearing distance have been investigated. 相似文献
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介绍了EAST上ICRF辅助加热系统1.5MW射频信号源中工作频率为25~70MHz的末级功率放大器的研制工作,从最优工作参数、输入回路和输出回路三个主要方面详细分析了该级大功率宽频带射频放大器。经比较,分析结果和测试数据显示了很好的一致性,这为实现ICRF加热系统的可靠运行奠定了基础。 相似文献
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鉴于EAST ICRF天线真空密封性和基于实验移动的要求,可移动支撑被设计用来支撑ICRF天线前部重量。通过理论计算公式对天线支撑结构进行计算,给出了不同截面尺寸、不同移动距离下支撑杆应力和变形情况。用有限元分析方法进行分析,分析结果和理论公式计算结果非常相近,满足设计要求。计算结果为支撑杆优化设计提供理论指导,计算方法为同类装置的支撑结构提供有益的借鉴。 相似文献
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