中国工程物理研究院应用电子学研究所,四川省绵阳市919信箱1015分箱,621900
纸质出版:2010
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FONT face, Verdana, 黄华, 等. 长脉冲相对论速调管放大器杂频振荡的分析与抑制[J]. 电子学报, 2010,38(7):1473-1477.
FONT face, Verdana, HUANG Hua, et al. Analysis and Suppress of Multifrequency Oscillation on Long Pulse Relativistic Klystron Amplifiers[J]. Acta Electronica Sinica, 2010, 38(7): 1473-1477.
<FONT face=Verdana>分析了S波段长脉冲相对论速调管放大器(RKA)输出微波杂频振荡和功率波形包络振荡的主要根源,采用粒子模拟程序对RKA电子束尺寸和阻抗、群聚距离、输出腔有载Q值、引导磁场、注入微波等参数的调节,有效抑制了杂频振荡. 根据分析结果开展了相应的实验研究,得到了较好的实验结果,输出微波由300MW提高到540MW,脉宽由50ns提高到120ns,辐射微波重复频率20Hz,束波转换效率30%,杂频振荡得到了有效抑制.
<FONT face=Verdana>The main reasons of output microwave multi-frequency oscillation on S-band long pulse Relativistic Klystron Amplifiers were analyzed in this paper. Multi-frequency oscillation of RKA was suppressed evidently with PIC after some modifications on electron beams
bunching length
loaded Qvalue of output cavity
and leading magnetic field. According to the PIC results the long pulse RKA experiment was developed and a favorable experimental result was obtained
which the output microwave power increased from 300MW to 540MW
the output microwave pulse width increased from 50ns to 120ns. The efficiency was about 30%
the operation repetition was 20Hz.
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