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首页> 外文会议>IEEE International Power Modulator and High Voltage Conference >Investigation of a 12-cavity rising-sun relativistic magnetron with diffraction output using particle-in-cell simulation
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Investigation of a 12-cavity rising-sun relativistic magnetron with diffraction output using particle-in-cell simulation

机译：利用粒子模拟研究具有衍射输出的12腔旭日相对论磁控管

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A 12-cavity rising-sun relativistic magnetron with diffraction output (MDO) driven by transparent cathode is investigated with three-dimensional particle-in-cell simulation. It is shown that its electronic efficiency can be as high as 78% with gigawatt level of radiation power when applied voltage is 400 kV. The peak efficiency around 70% of the 12-cavity rising-sun relativistic MDO occurs at the voltage (V≈400kV±50kV). In simulations all deep cavities are continued axially along the wall of a conical horn antenna whose cross section exceeds cutoff for the radiated wave and all shallow cavities are tapered to the output. When choosing the depth ratio of the cavities as 0.84, an output power of 1.8 GW for 12-cavity rising-sun relativistic magnetron MDO with 400 kV applied voltage can be obtained. Also, when increasing the transparent azimuthal thickness and optimizing the length of transparent cathode, the axial leakage current can be reduced by 50%.
机译：通过三维粒子模拟研究了一种由透明阴极驱动的具有衍射输出（MDO）的12腔旭日相对论磁控管。结果表明，当施加电压为400 kV时，其千兆瓦级辐射功率的电子效率可高达78％。 12腔朝阳相对论MDO的70％左右的峰值效率出现在电压（V≈400kV±50kV）处。在仿真中，所有深腔沿圆锥形喇叭形天线的壁轴向连续，其横截面超过了辐射波的截止值，所有浅腔均逐渐减小到输出。当将腔的深度比选择为0.84时，对于施加400 kV电压的12腔旭日相对论磁控管MDO，可以获得1.8 GW的输出功率。同样，当增加透明方位角厚度并优化透明阴极的长度时，轴向泄漏电流可减少50％。

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