Miniaturized high-power klystron based on single-ridge CeSRR unit

Abstract

The invention provides a miniaturized klystron based on a single-ridge CeSRR unit, and belongs to the technical field of microwave vacuum electronic devices. By loading the single-ridge CeSRR unit, the klystron is ensured to work in a specific frequency band, and the effects of reducing the size and enhancing the axial electric field intensity are achieved; the sub-wavelength characteristic of the single-ridge CeSRR unit is obvious, and the size can be greatly reduced when the single-ridge CeSRR unit is applied to the klystron; the single-ridge CeSRR unit has a strong resonance characteristic, so that the klystron also has obvious advantages in the aspects of high efficiency and high gain; and meanwhile, the klystron adopts the single-gap resonant cavity, mode competition is not prone to occurring, stable work can be achieved in a medical accelerator and a large scientific device with megawatt magnitude power output requirements, and the situation is avoided that an expansion interaction resonant cavity easily stimulate multiple non-working modes due to a multi-gap structure under the condition of large current, which is not suitable for high-power output. In addition, the klystron disclosed by the invention also adjusts the output cavity.

Description

technical field [0001] The invention belongs to the technical field of microwave vacuum electronic devices and relates to a klystron, in particular to a miniaturized high-power klystron based on a single-ridge CeSRR unit. Background technique [0002] Microwave vacuum electronic devices are electronic devices that generate and amplify microwaves by interacting with electron beams and microwaves. They have the characteristics of high power, high efficiency, and long life. and other fields have a wide range of applications. As a microwave vacuum electronic device with the highest power capacity, high-power klystrons are widely used in medical accelerators and large scientific devices, such as P-band (0.23-1GHz) high-power klystrons in terms of performance indicators and operational reliability. , which can meet the requirements of the proton linear accelerator, the core component of the proton therapy instrument in the developing medical field in my country, and the proton lin...

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Problems solved by technology

Based on the extended interaction klystron composed of an extended interaction resonant cavity loaded with a single-ridge CeSRR unit in the above-mentioned patent, although the miniaturization of the device can be realized and the output of lower power below the kilowatt level can be achieved, due to the extended interaction Under the condition of high current, the multi-gap structure of the resonant cavity is easy to excite multiple non-working modes, so it is not suitable for high-power stable output of the megawatt level, and cannot be well applied to future medical accelerators and big science equipment, etc.

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