A compact coaxial cusped periodic permanent magnet for a coaxial relativistic Čerenkov generator

A prototype of an integrated coaxial cusped periodic permanent magnet (CPPM) system is put forward and optimized. The guiding magnetic field strength and period of the CPPM are 0.32 T and 30 mm, respectively, and the whole focusing system is 240 mm long, with a maximum diameter of 170 mm and total w...

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Veröffentlicht in:Physics of plasmas 2020-08, Vol.27 (8)
Hauptverfasser: Wu, Xiaoling, Chen, Changhua, Teng, Yan, Li, Xiaoze, Tan, Weibing, Shi, Yanchao, Zhu, Xiaoxin, Zhang, Ligang
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Sprache:eng
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Zusammenfassung:A prototype of an integrated coaxial cusped periodic permanent magnet (CPPM) system is put forward and optimized. The guiding magnetic field strength and period of the CPPM are 0.32 T and 30 mm, respectively, and the whole focusing system is 240 mm long, with a maximum diameter of 170 mm and total weight of under 30 kg. Using this focusing system, an oversized Ku-band coaxial relativistic Čerenkov generator is proposed and investigated. Particle-in-cell simulation shows that the microwave with an output power of 830 MW at 15.29 GHz is achieved, yielding a conversion efficiency of 37%. The feasibility of CPPM applications in high power microwave (HPM) generation is confirmed, providing a new technical route for small, lightweight HPM generators.
ISSN:1070-664X
1089-7674
DOI:10.1063/5.0014102