The design of an electron optics system for a $W$-band sheet beam klystron was described. An elliptically cylindrical electron gun and wiggler focusing structure were adopted to produce and guide a 80-kV 4-A sheet beam with an elliptical cross section of 10 $times$ 0.4 mm. The wiggler focusing principle was reviewed and a practical structure was presented. MAFIA was used to simulate the structure. The simulation showed that the electron beam transmission attained 100% over 100 mm in distance with a fill factor that is less than 0.6.
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机译：描述了一种用于$ W $波段的片束速调管的电子光学系统的设计。采用椭圆形圆柱电子枪和摆动式聚焦结构来产生和引导椭圆形横截面为10×0.4mm的80kV 4-A薄板束。回顾了摆动摇摆器的聚焦原理并提出了实用的结构。 MAFIA用于模拟结构。模拟表明，电子束传输在100 mm的距离上达到100％，填充系数小于0.6。
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