This brief presents a millimeter-wave gyrotron that operates at a low voltage (below 5 kV) and achieves medium-power, high-efficiency, continuous-wave output. The gyrotron reaches a peak output power of 140 W at a frequency of 30.192 GHz, with an operating voltage and beam current of 4.2 kV and 280 mA, respectively, resulting in an impressive interaction efficiency of 11.9%. Remarkably, even at a reduced voltage of 1.9 kV, the gyrotron can still produce an output power of 5.0 W. The numerical calculation and particle-in-cell (PIC) simulation are conducted to verify the experiment. These results indicate that the gyrotron has the potential to generate medium power with high efficiency at low voltages. The size and cost of the power supply unit for gyrotrons can be significantly reduced. This investigation could advance the development of compact gyrotrons for various applications.

中文翻译：

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低压高效连续波毫米波回旋管演示

本简介介绍了一种在低电压（低于 5 kV）下工作并实现中等功率、高效率、连续波输出的毫米波陀螺仪。该陀螺仪在频率为 30.192 GHz 时达到 140 W 的峰值输出功率，工作电压和束流分别为 4.2 kV 和 280 mA，交互效率高达 11.9%。值得注意的是，即使在降低1.9 kV的电压下，陀螺仪仍然可以产生5.0 W的输出功率。通过数值计算和粒子在细胞（PIC）模拟来验证实验。这些结果表明，陀螺仪具有在低电压下高效率产生中等功率的潜力。可以显着减小回旋管电源单元的尺寸和成本。这项研究可以促进各种应用的紧凑型陀螺仪的开发。