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高功率X波段速调管必须依靠高性能的注波互作用段来实现,互作用段的作用是使入射的连续电子注逐步转化为分离的群聚块,之后在通过输出腔的过程中,间隙电场使群聚块减速将电子的动能转化为微波能量向外输出。速调管的注波互作用段由一组性能参数各不相同的谐振腔组成,各腔的谐振频率、品质因数、特性阻抗以及沿轴线的分布位置等均对整管的效率、增益和输出功率有直接的影响。我们首先使用基于圆环模型的2.5维注波互作用程序通过反复优化找到了一组基本参数,随后在CST中建立了三维仿真模型对该结构进行了验算,实际计算表明在电子注电压和电流分别为440kV和350A时,速调管的输出功率大于50MW,所得结果满足设计要求。
High-power X-band klystron must rely on high-performance wave-injection interaction segment to achieve, the role of the interaction segment is to make the incident of continuous electron injection step by step into separate clusters, and then through the output cavity in the process, The gap electric field decelerates the cluster to convert the kinetic energy of electrons into microwave energy and output it to the outside. The klystron-wave interaction section of the klystron is composed of a set of resonators with different performance parameters. The resonance frequency, quality factor, characteristic impedance and distribution along the axis of each cavity are all related to the efficiency, gain and output of the whole pipe Power has a direct impact. We first found a set of basic parameters by iterative optimization using a 2.5-dimensional wave-based interaction program based on the toroidal model, and then built a three-dimensional simulation model in the CST to verify the structure. The actual calculations show that the electron injection voltage and current Respectively 440kV and 350A, klystron output power greater than 50MW, the results meet the design requirements.