Wu Xiaoling, Chen Changhua, Teng Yan, Li Xiaoze, Tan Weibing, Hu Xianggang, Wang Sen, Fan Ruyu
Department of Engineering Physics, Tsinghua University, Beijing 100084, China.
Science and Technology on High Power Microwave Laboratory, Xi'an, Shaanxi 710024, China.
Rev Sci Instrum. 2020 Oct 1;91(10):104703. doi: 10.1063/5.0025010.
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.
