220 GHz回旋管脉冲磁场系统和电子枪的设计与实验研究

 根据220 GHz回旋管的工作要求，设计了其所需的脉冲磁场系统与电子枪。脉冲磁场系统采用哑铃状结构，具有均匀区长、电阻小与电感小等优点，可以在较低电容与电压下获得更高的脉冲峰值磁场，并分析了其脉冲放电特性。电子枪采用双阳极磁控注入枪，用EGUN对其进行了设计优化，电子注纵横速度比为1.53，速度零散为3.1%。实验研究表明，脉冲磁场峰值强度达到8 T，电子注电流达到2 A，电子电流基本传输到靶片，控制极与阳极没有截获到电子，脉冲磁场系统与电子枪工作正常，达到设计要求。

Design and experimental study of pulsed magnet and electron gun of 220 GHz gyrotron

According to the requirement of 220 GHz gyrotron designed by University of Science and Technology of China, a pulsed magnet system and electron gun have been designed. The pulsed magnet system is dumbbell-shaped with the advantages of long uniform district, little resistance and inductance. It can obtain a high peak pulsed magnetic field with small inductor and capacitor. A double-anode magnetron injection gun has been designed and optimized by EGUN for the gyrotron. The electron beam velocity ratio is 1.53, and the velocity spread is 3.1%. The experimental results show that, the peak magnet field of the pulsed magnet system was 8 T, the electron beam current reached 2 A, the electrons were transported to the target, and few electrons were not sent to the control anode and anode, which mea