To achieve the application of a periodic permanent magnet in high power microwave, a compact coaxial cusped periodic permanent magnet (CPPM) focusing system is constructed. The system consists of permanent magnets with different magnetization directions and soft magnets. Taking the required magnetic field performance and the effect of demagnetization into account, NdFeB and FeCoV are selected as the permanent and soft magnet materials. After the system is constructed, the magnetic field is measured. The results show that the guiding magnetic field strength and period of the CPPM are about 0.29 T and 26 mm, respectively, and the magnetic field distribution of measurement shows good agreement with the simulation results. However, there are some differences between the measurement and simulation results, and the differences are compared and analyzed here.

中文翻译：

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紧凑型同轴尖头周期性永磁聚焦系统的研制

为实现周期永磁体在高功率微波中的应用，构建了紧凑型同轴尖角周期永磁体（CPPM）聚焦系统。该系统由不同磁化方向的永磁体和软磁体组成。考虑到所需的磁场性能和退磁效果，选择NdFeB和FeCoV作为永磁和软磁材料。系统构建完成后，测量磁场。结果表明，CPPM的引导磁场强度和周期分别约为0.29 T和26 mm，测量的磁场分布与模拟结果吻合良好。但是，测量和模拟结果之间存在一些差异，