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用于脉冲束测试的同轴靶是束流试验台架系统中重要的测量元件,负责脉冲束的收集和信号的分析工作。脉冲束测试用同轴靶的主要结构为:顶部有3层电极板,最上面1层是挡束板,中间1层为负电压板,用于抑制二次电子的溢出,最下面1层为屏蔽板。元件中心是1个深度与内径比比较大的法拉第筒,为了防止二次电子反射出法拉第筒,继而影响测量的精度,将法拉第筒的底部设计成外凸的锥形,但同时也就增加了加工的难度,因此将法拉第筒部分设计成了3段:1段为法拉第筒的筒壁,中间1段为筒底,即外凸形的锥底和水冷封盖,
Coaxial targets used for pulsed beam testing are important measuring elements in beam test bench systems and are responsible for pulse beam collection and signal analysis. Pulsed beam test coaxial with the main structure of the target: the top of the three electrode plates, the uppermost layer is the beam plate, the middle layer of negative voltage for the suppression of secondary electrons, the bottom of the first layer is Shielding board. The center of the element is a Faraday cup with a relatively large depth to inner diameter. To prevent the secondary electrons from reflecting the Faraday cup, which in turn affects the accuracy of the measurement, the bottom of the Faraday cup is designed as a convex cone but at the same time it is increased The difficulty of processing, so part of the Faraday design into three sections: a section of Faraday tube wall, the middle of a cylinder for the end, that is, the convex cone bottom and water-cooled cover,