An efficient gigawatt level X-band Cerenkov type oscillator without guiding magnetic field
- College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha 410073 (China)
This paper presents a novel modification of gigawatt level X-band Cerenkov type high power microwave oscillator without guiding magnetic field. A confining cathode is put forward to suppress the radial dispersion of the annular relativistic electron beam and accordingly improve its axial transportation to ensure further beam-wave interaction. An overmoded nonuniform slow wave structure is adopted in order to increase the power capacity of the oscillator and the efficiency of beam-wave interaction. A tapered collector is used to collect the beam, increase the Q-factor, and extract the microwave favorably. The simulation results indicate that a microwave is generated by the proposed oscillator with output power of 1.9 GW and frequency of 9.02 GHz, when the diode voltage and beam current are 620 kV and 9 kA, respectively. The corresponding power conversion efficiency is 34%.
- OSTI ID:
- 22299846
- Journal Information:
- Physics of Plasmas, Vol. 21, Issue 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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