3-D simulation of 14 vanes 5.8 GHz magnetrons in non-uniform magnetic field

Lei Wenqiang; Guo Yanhua; Song Rui; Ma Guowu

doi:10.3788/HPLPB20132511.2922

Volume 25 Issue 11

Dec. 2013

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(11): 2922-2926

Lu Bin, Cui Bohua. Analysis and design of terahertz waveguide filter[J]. High Power Laser and Particle Beams, 2013, 25: 1527-1529. doi: 10.3788/HPLPB20132506.1527

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Lei Wenqiang, Guo Yanhua, Song Rui, et al. 3-D simulation of 14 vanes 5.8 GHz magnetrons in non-uniform magnetic field[J]. High Power Laser and Particle Beams, 2013, 25: 2922-2926. doi: 10.3788/HPLPB20132511.2922

Lu Bin, Cui Bohua. Analysis and design of terahertz waveguide filter[J]. High Power Laser and Particle Beams, 2013, 25: 1527-1529. doi: 10.3788/HPLPB20132506.1527

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3-D simulation of 14 vanes 5.8 GHz magnetrons in non-uniform magnetic field

doi: 10.3788/HPLPB20132511.2922

1.
Institute of Applied Electronics,CAEP,Mianyang 621900,China

Received Date: 2013-03-12
Rev Recd Date: 2013-07-26
Publish Date: 2013-10-28

Abstract

Abstract

The suppression of the frequency spectrum noise is the key in the magnetron research. The performance of 14-vanes 5.8 GHz strapped magnetron is modeled, including cathode, vane, straps, pole pieces and output antenna. The cavity frequency is 5.86 GHz in the cold cavity simulation. Seven electron spokes confirm the mode works in the oscillation cavity region by the hot simulation. A non-uniform magnetic field distribution is calculated as a conic section curve by the pole structure in the model. When beam voltage is 4.5 kV, the anode current is 1.55 A and the axial value of the non-uniform magnetic field is 0.289 T, the output frequency 5.891 GHz and output power 4.9 kW in the hot test simulation are obtained. The efficiency of the electron interaction is 70.3%. The remarkable improvement in the frequency spectrum and the electron efficiency are achieved by suppressing the RF harmonic content.
- 14-vanes 5.8 GHz magnetron,
- electron spokes,
- non-uniform magnetic field,
- output spectrum

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