A Ku-band magnetically insulated transmission line oscillator with overmoded slow-wave-structure

doi:10.1088/1674-1056/25/12/125202

Abstract

In order to enhance the power capacity, an improved Ku-band magnetically insulated transmission line oscillator (MILO) with overmoded slow-wave-structure (SWS) is proposed and investigated numerically and experimentally. The analysis of the dispersion relationship and the resonant curve of the cold test indicate that the device can operate at the near π mode of the TM01 mode, which is useful for mode selection and control. In the particle simulation, the improved Ku-band MILO generates a microwave with a power of 1.5 GW and a frequency of 12.3 GHz under an input voltage of 480 kV and input current of 42 kA. Finally, experimental investigation of the improved Ku-band MILO is carried out. A high-power microwave (HPM) with an average power of 800 MW, a frequency of 12.35 GHz, and pulse width of 35 ns is generated under a diode voltage of 500 kV and beam current of 43 kA. The consistency between the experimental and simulated far-field radiation pattern confirms that the operating mode of the improved Ku-band MILO is well controlled in π mode of the TM01 mode.

Keywords: Ku-band MILO HPM overmoded SWS mode selection particle simulation experimental investigation

Received: 11 July 2016
Revised: 08 August 2016
Accepted manuscript online:

PACS:	52.59.-f	(Intense particle beams and radiation sources)
	52.65.Rr	(Particle-in-cell method)
	52.70.Gw	(Radio-frequency and microwave measurements)

Fund:

Project supported partly by the National Natural Science Foundation of China (Grant No. 61171021).

Corresponding Authors: Jian-De Zhang
E-mail: jdzhang12@yahoo.com

Cite this article:

Tao Jiang(江涛), Jun-Tao He(贺军涛), Jian-De Zhang(张建德), Zhi-Qiang Li(李志强), Jun-Pu Ling(令钧溥) A Ku-band magnetically insulated transmission line oscillator with overmoded slow-wave-structure 2016 Chin. Phys. B 25 125202

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A Ku-band magnetically insulated transmission line oscillator with overmoded slow-wave-structure

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