Volume 32 Issue 5
Feb.  2020
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Article Navigation >  High Power Laser and Particle Beams  > 2020  >  32(5): 053003
Wang Ganping, Li Chunxia, Jin Xiao, et al. Multi-beam diode based on combined magnetic system[J]. High Power Laser and Particle Beams, 2020, 32: 053003. doi: 10.11884/HPLPB202032.190436
Citation: Wang Ganping, Li Chunxia, Jin Xiao, et al. Multi-beam diode based on combined magnetic system[J]. High Power Laser and Particle Beams, 2020, 32: 053003. doi: 10.11884/HPLPB202032.190436
shu

Multi-beam diode based on combined magnetic system

doi: 10.11884/HPLPB202032.190436
  • 1.

    Science and Technology on High Power Microwave Laboratory, Institute of Applied Electronics, CAEP, P. O. Box 919-1015, Mianyang 621900, China

  • 2.

    Graduate School, China Academy of Engineering Physics, Beijing 100088, China

  • Received Date: 2019-11-25
  • Rev Recd Date: 2020-02-12
  • Publish Date: 2020-02-10
    Abstract

  • This paper analyses the electron emission from cathode stick and multi-beam cathode rod of MBK and investigates the transport efficiency with different radius and drift tube length. The results show that with compact constructure the electron emission from cathode stick and rod under high voltage affect the multi-beam transmission efficiency obviously. Especially, the beam bombing on the wall of tube will degenerate the repetition capacity of multi-beam klystron. To resolve these problem,  a combined magnetic system is designed and fabricated, which can reduce the stick and rod emission by pulling the multi-beam cathode out of the high electric zone. Then a multi-beam diode with combined magnetic system is designed. Calculation and simulation results show that beam emission from the cathode stick and the rod can be decreased evidently, furthermore the cathode stick can be removed. In addition, the magnetic distribution can ensure high efficiency and stability of multi-beam transport. At present, the multi-beam diode with combined magnetic system is being  experimented.

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