大功率连续波速调管的仿真设计

IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI:10.1109/IVEC.2014.6857639

Rui Zhang, Yong Wang

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引用次数: 0

摘要

IECAS目前正在开发一种用于托卡马克的新型连续波速调管。为了满足这些要求，进行了数值分析。特别注意电子枪和电子管的射频电路，以获得优异的束流传输特性和高效率。电子枪的性能为1.0μP。阴极负载小于0.7 A/cm2，束流电流为16A。光束聚焦系统采用电磁磁铁结构。仿真结果表明，光束轨迹具有良好的层流状态，光束到隧道的径向填充系数小于0.6。波束纹波是平均波束半径的9%。射频电路由五个空腔组成。一维大信号仿真表明，该电路的效率大于57%，饱和增益为50dB。该速调管工作电压为63kV，波束电流为16A，预计在5GHz频率下可产生580kW的射频功率。

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Simulation design of a high power CW klystron

A new continuous-wave (CW) klystron for use in TOKAMAK is currently under development at IECAS. Numerical analysis has been carried out in order to meet all the requirements. Particular attention is paid to the electron gun and RF circuit of the tube to get excellent beam transport characteristics and high efficiency. The electron gun has a perveance of 1.0μP. The cathode load is lower than 0.7 A/cm2 with a beam current of 16A. The beam focusing system is a solenoid magnet structure. Simulation indicates that the beam trajectories have a good laminar condition with a beam-to-tunnel radial fill factor less than 0.6. The beam ripple is 9 percent of the average beam radius. The RF circuit consists of five cavities. One-dimensional large signal simulation indicates that the circuit has an efficiency of more than 57% with a saturated gain of 50dB. With an operating voltage of 63kV and a beam current of 16A, the klystron is expected to produce 580kW RF power at 5GHz.

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IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference

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