Operation of an X-band dielectric Cherenkov maser amplifier
Operation of an X-band dielectric Cherenkov maser amplifier
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DOI：
10.1109/plasma.1990.110648
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发表时间：
1990-03
期刊：
影响因子：
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通讯作者：
W. Main;J. Weatherall;R. Cherry;E. Garate;H. Kosai;W. Peter;A. Fisher
中科院分区：
文献类型：
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作者：
W. Main;J. Weatherall;R. Cherry;E. Garate;H. Kosai;W. Peter;A. Fisher
仅提供摘要形式。对介质切伦科夫脉塞作为放大器的性能进行了理论和实验研究。放大器被设计为工作在TM01模式的圆柱形，介质内衬波导。在两个独立的电子束产生系统上进行了两组不同的实验。在低电压。低电流（200-kV，100-A）实验，结果表明该器件在9.7和10 GHz之间的频率下作为放大器工作。RF输入由可调谐（9 - 10-GHz）、10-kW磁控管提供。在21厘米的相互作用长度的平均功率增益约为0.6分贝/厘米进行了测量。射频脉冲长度约为1 μ s。在实验的放大到由700 kV至1 MV、3 kA驱动的系统中。100 ns的电子束与射频输入提供了一个可调谐的（8.4 - 9.6-GHz），200千瓦的磁控管，初步结果表明，功率输出280兆瓦，8.6 GHz的峰值功率转换效率为11%。使用代码ISIS的粒子模拟证实了放大器高效率操作的潜力
Summary form only given. The performance of a dielectric Cerenkov maser operating as an amplifier was studied theoretically and experimentally. The amplifier is designed to work in the TM01 mode of a cylindrical, dielectric-lined waveguide. Two different sets of experiments were carried out on two separate electron-beam-generating systems. In a low-voltage. low-current (200-kV, 100-A) experiment, results indicate that the device operated as an amplifier at frequencies between 9.7 and 10 GHz. The RF input was provided by a tunable (9-10-GHz), 10-kW magnetron. An average power gain of ~0.6 dB/cm over a 21-cm interaction length was measured. The RF pulse length was ~1 μs. In a scale-up of the experiment to a system driven by a 700-kV to 1-MV, 3-kA. 100-ns electron beam with RF input provided by a tunable (8.4-9.6-GHz), 200-kW magnetron, preliminary results indicate a power output of 280 MW at 8.6 GHz with a peak power conversion efficiency of ~11%. Particle-in-cell simulations using the code ISIS confirm the potential for high-efficiency operation of the amplifier