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部分微波管的特殊使用条件要求阴极具有快速启动能力,即要求阴极组件加电后在十几秒甚至更短的时间内达到一定的发射电流。同时,还要求快热阴极组件具有良好的耐振动、冲击能力。本文介绍了高效率快热阴极组件的设计原则,并给出了一种多注速调管用快热多注阴极的设计实例,该阴极组件已经成功应用于某多注速调管,并具有良好的快热性能。
Part of the microwave tube special conditions require the cathode has a fast start capability, which requires the cathode assembly power after a few seconds or less to achieve a certain emission current. At the same time, also requires fast hot cathode components have good resistance to vibration, impact. In this paper, the design principle of a high efficiency and fast hot cathode assembly is introduced and a design example of a fast hot multi-injection cathode with multiple injection tubes is presented. The cathode assembly has been successfully applied to a multi-injection klystron tube and has good Fast performance.