带状束高功率微波源宽通带收集极  

Wide-band electron beam collector for high-power microwave source driven by sheet electron beam

作　　者：王弘刚[1] 马军[1] 杜广星[1] 钱宝良[1] 

机构地区：[1]国防科学技术大学光电科学与工程与学院,长沙410073

出　　处：《强激光与粒子束》2014年第11期141-145,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(51377164);国防科学技术大学优秀研究生创新基金项目(S140702)

摘　　要：设计了一种适用于带状电子束高功率微波源的宽通带收集极,在有效吸收束-波相互作用后的带状电子束的同时,保证了带状电子束高功率微波源的工作模式——矩形波导TM11模式高效率地通过.研究结果表明：在13～27 GHz范围内,功率传输效率大于95％,这一宽通带特性使得该类型的收集极与带状电子束高功率微波源能够更好配合,显著提高了微波源的模拟优化和实验调试效率;TM11模式微波的传输效率对收集极厚度和长度等参数不敏感;该类型收集极结构具有良好的散热能力,在不加外部水冷装置的条件下,仅靠空气自然对流冷却和辐射冷却,可以承受电流3 kA、电压300 kV、脉冲宽度30 ns及重复频率50 Hz带状电子束的连续冲击.The design of election beam collector for high-power microwave source driven by sheet electron beam is presented.Besides collecting electrons,the collector can effectively transform rectangular TM11 mode engendered by microwave source with sheet electron beam.The transmittal efficiency is higher than 95% when the frequency is in the range of 13 GHz to 27 GHz.The wide-band character can improve efficiency of the design and simulation of high-power microwave source with sheet beam.The transmittal efficiency of TM11 mode is not sensitive to the thickness and length of the collector.The heat dissipation of this collector performs well and it is able to hold the impact of electron beam with 3 kA,300 kV,30 ns pulse-width and 50 Hz repetitive operation,just cooled by natural air convection and heat radiation.The results are important to the design of high-power microwave generators driven by sheet electron beams.

关 键 词：收集极 带状电子束 矩形波导 隔断插板 热分析 

分 类 号：TN128[电子电信—物理电子学]