Experimental Investigation of the X-Band Transit-Time Tube Oscillator

MA Qiao-Sheng; LIU Qing-Xiang; SU Chang; FAN Zhi-Kai; CHANG An-Bi; HU Hai-Ying

Chinese Physics C> 2003, Vol. 27> Issue(6) : 542-545

Experimental Investigation of the X-Band Transit-Time Tube Oscillator

Institute of Applied Electronics, CAEP, Mianyang 621900, China

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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.

References

[1]

. FAN Zhi-Kai.The Theoretic Investigation and the Principal Experiment of the Transit-time Tube Oscillator.Chinese Academy of Engineer Physics Ph.D thesis.1999,6(in Chinese)(范植开.渡越管振荡器的理论研究与原理性实验.中国工程物理研究院博士论文,1999,6)2. Resaerch Report of sinus-700 Accelerator.Siberia Branch of Russian Academy of Science,19953. CHEN Chang-Hua,LIU Guo-Zhi et al.High Power Laser and Particle Beam.2000,6(in Chinese)(陈昌华,刘国治等.引导磁场对相对论返波管微波功率的影响.强激光与粒子束,2000,6)

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MA Qiao-Sheng, LIU Qing-Xiang, SU Chang, FAN Zhi-Kai, CHANG An-Bi and HU Hai-Ying. Experimental Investigation of the X-Band Transit-Time Tube Oscillator[J]. Chinese Physics C, 2003, 27(6): 542-545.

MA Qiao-Sheng, LIU Qing-Xiang, SU Chang, FAN Zhi-Kai, CHANG An-Bi and HU Hai-Ying. Experimental Investigation of the X-Band Transit-Time Tube Oscillator[J]. Chinese Physics C, 2003, 27(6): 542-545. shu

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Received: 2002-07-05
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Experimental Investigation of the X-Band Transit-Time Tube Oscillator

Corresponding author: MA Qiao-Sheng,

Institute of Applied Electronics, CAEP, Mianyang 621900, China

Received Date: 2002-07-05
Accepted Date: 1900-01-01
Available Online: 2003-06-05

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.