【摘要】 论述了在sinus 70 0加速器上进行的X波段渡越管振荡器的实验研究 .在实验中 ,首先对加速器进行了调节 ,使其能够稳定运行 ;然后对影响器件运行的各个参数进行了调试 ,得到各参数的比较合适的值 ,其中 1 4波长支撑的长度为 8mm、磁场的大小为 1 85T、二极管电压的大小为 70 0kV、二极管阴极结构为倒圆的环形阴极头 ,最后得到微波频率为 9 18GHz ,微波功率为 1 5GW ,脉宽为2 6ns ,效率达 31%左右 .更多还原

【Abstract】 A newly manufactured X-band transit-time tube oscillator is introduced. The major advantages of this oscillator include: 1) simple structure, 2) high conversion efficiency, and 3) RF output frequency almost independent of electron beam voltage. On the accelerator sinus-700, its output power’s dependences on system parameters are experimentally investigeted. The experiment results are in excellent agreement with the theoretical predicts, and the design specifications of 9.18GHz microwave frequency, 26ns pulse width and 31% conversion efficiency are reached. At higher powers, the pulse shortening develops. It’s presumably because of reflected electrons, which will be traped by a strong magnetic filed, and then disturb the ongoing electron’s interaction with microwave.更多还原