【摘 要】
：
本文主要设计一个工作频率为162 MHz的高频实验腔体,用于研究介质与金属电极间的多电子倍增效应及其与极板表面特性的关系,找出抑制多电子倍增效应的方法。该实验腔体主要包
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本文主要设计一个工作频率为162 MHz的高频实验腔体,用于研究介质与金属电极间的多电子倍增效应及其与极板表面特性的关系,找出抑制多电子倍增效应的方法。该实验腔体主要包括腔体外壳、Dee板、腔体内杆、微调电容及馈入端口。整个腔体等效为LC谐振电路,通过改变内杆的粗细改变腔体等效电感值,改变腔体顶端铜柱在腔体内的长短进而改变腔体电容大小。在本试验腔体实际调试中,主要通过改变微调电容与Dee板之间的距离,改变腔体等效电容值的大小,进而达到调谐腔体频率的目的。
In this paper, a high-frequency experimental cavity with a working frequency of 162 MHz is designed to study the effect of multiple electron multiplication between the dielectric and the metal electrode and its relationship with the surface characteristics of the electrode to find out the method to suppress the effect of multiple electron multiplication. The experimental cavity mainly includes the cavity shell, Dee plate, cavity rod, trimming capacitance and feeding port. The entire cavity is equivalent to the LC resonant circuit, changing the equivalent inductance of the cavity by changing the thickness of the inner rod to change the length of the copper pillar in the cavity at the top of the cavity to change the capacitance of the cavity. In the actual debugging of the test cavity, the cavity equivalent capacitance value is changed mainly by changing the distance between the trimming capacitor and the Dee board, so as to achieve the purpose of tuning the cavity frequency.
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