S波段TE_(11)输出相对论磁控管永磁包装仿真设计  

Design of permanent magnet packaging for an S-band relativistic magnetron with TE_(11) mode output

作　　者：崔越 秦奋[1] 徐莎[1] 雷禄容[1] 张勇[1] 张玉涵 Cui Yue;Qin Fen;Xu Sha;Lei Lurong;Zhang Yong;Zhang Yuhan(National Key Laboratory of Science and Technology on Advanced Laser and High Power Microwave,Institute of Applied Electronics,CAEP,Mianyang 621900,China;Graduate School of China Academy of Engineering Physics,Mianyang 621900,China)

机构地区：[1]中国工程物理研究院应用电子学研究所,先进激光与高功率微波全国重点实验室,四川绵阳621990 [2]中国工程物理研究院研究生院,四川绵阳621900

出　　处：《强激光与粒子束》2025年第1期46-52,共7页High Power Laser and Particle Beams

摘　　要：对一个S波段TE_(11)输出8腔全腔提取相对论磁控管(R8 ACAE-RM)的永磁包装设计进行了初步探索。采用一种内磁块和外磁块相组合的结构,内磁块置于阳极筒内阳极块两端,外磁块置于阳极筒外,在互作用区产生磁感应强度约为0.34 T,轴向均匀区长度为72 mm的磁场,永磁体重量仅为21 kg。相较于传统外磁体系统,该设计可以使磁体重量降低,互作用区磁场强度更加均匀,系统结构更加紧凑,满足高功率微波源系统的轻量化、小型化需求。相对论磁控管选择π模作为其工作模式,通过全腔提取结构输出4个90°扇形TE_(11)模式,最后通过同轴插板模式转换器进行模式转换输出圆波导TE_(11)模式。利用粒子模拟软件对器件仿真模拟,在二极管电压320 kV,永磁体产生的磁场空间下,R8 ACAE-RM获得了1.06 GW的微波输出功率,微波中心频率为2.44 GHz,转换效率约为47%。The design of permanent magnet packaging for a compact S-band 8-cavity all-cavity axial extraction relativistic magnetron(R8 ACAE-RM)with an output mode of TE_(11) is preliminarily explored.The inner magnetic block is placed at both ends of the anode block in the anode cylinder,and the outer magnetic block is placed outside the RM,which generates a magnetic field of about 0.34 T and a length of 72 mm on the axial uniform zone in the interaction zone,and the weight of the permanent magnet is only 21 kg.Compared with the traditional external magnet system,this design can reduce the weight of the magnet,the magnetic field strength in the interaction zone is more uniform,and the system structure is more compact,which can meet the lightweight and miniaturization requirements of high-power microwave source systems.The device appliesπmode as its operating mode,four 90°sector TE_(11) modes are extracted through all-cavity axial extraction structure,and a coaxial-plate-inserted mode converter is designed for mode conversion,thus to obtain TE_(11) mode in circular waveguide.In particle-in-cell(PIC)simulation,the proposed R8 ACAE-RM can generate a microwave power of 1.06 GW with a pure TE_(11) mode at the frequency of 2.44 GHz under the conditions of a guiding magnetic generated by the inner and outer magnetic blocks,a diode voltage of 320 kV,and power conversion efficiency of 47%.

关 键 词：高功率微波 永磁包装 TE_(11)模式 相对论磁控管 模式转换 

分 类 号：TN121[电子电信—物理电子学]