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Reflection enhanced gyrotron

A reflection-enhancing, gyrotron technology, applied in electron/ion guns of transit-time electron tubes, tubes with multiple resonant cavities, and electron tubes with velocity/density modulated electron flow, etc., can solve the problem that the harmonic mode cannot work normally and other problems, to achieve the effect of enhancing the beam effect, reducing the requirements of mode competition, and convenient processing

Active Publication Date: 2020-04-28
INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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  • Abstract
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AI Technical Summary

Problems solved by technology

As for the gyrotron, since its resonant cavity is a high overmode structure, it is easy to produce mode competition, especially the fundamental mode is easier to vibrate, which often causes the desired harmonic mode to fail to work normally.

Method used

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  • Reflection enhanced gyrotron

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Effect test

Embodiment 1

[0025] like figure 1 As shown, a reflection-enhanced gyrotron provided in Embodiment 1 of the present invention includes a magnetron injection electron gun 1, a resonant cavity 2, a quasi-optical mode converter 3, and an insulating ceramic 4 and collector 5, along the output path of the electromagnetic wave produced by the gyrotron, an electromagnetic wave reflector 7 is arranged on the inside or outside of the output window 6 of the quasi-optical mode converter 3, and part of the electromagnetic wave reflector 7 The output window 6 is covered to reflect part of the electromagnetic waves generated by the gyrotron.

[0026] Specifically, the magnetron injection electron gun 1 is mainly used to generate the cyclotron beam 8; the resonant cavity 2 is mainly used to make the cyclotron beam 8 generate beam wave action, and convert part of the energy into electromagnetic wave energy; and the quasi-optical mode The converter 3 is used to convert the electromagnetic wave generated in...

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Abstract

The invention discloses a reflection enhanced gyrotron, and belongs to the technical field of millimeter wave devices. The reflection enhanced gyrotron is mainly characterized in that an electromagnetic wave reflector is arranged on the inner side or the outer side of an output window of the gyrotron so as to reflect part of electromagnetic waves output by the gyrotron back into the gyrotron body,that is, a feedback process is introduced, so that the beam-wave effect of the whole gyrotron in a working mode is enhanced, the requirement for overcoming mode competition is reduced, and the gyrotron can more easily achieve single-mode work in a specified mode. In addition, a special-shaped quasi-optical mode converter is further arranged, so that the peripheral electromagnetic beams deviate from the original direction and turn over in the gyrotron, and the beam-wave interaction is further enhanced.

Description

technical field [0001] The present invention relates to the technical field of millimeter wave devices, in particular to a reflection-enhanced gyrotron. Background technique [0002] The gyrotron is a fast-wave device, which overcomes the limitation of the physical size of the resonance region when the traditional slow-wave device works. In the millimeter wave band and the terahertz frequency band, the gyrotron is the only device that can generate high-power continuous wave output, so it is widely used in thermonuclear fusion experiments for plasma heating. Choose a power source. As for the gyrotron, since its resonant cavity is a high overmode structure, it is easy to produce mode competition, especially the fundamental mode is more likely to vibrate, which often causes the desired harmonic mode to fail to work normally. At present, the gyrotron can work efficiently in single-mode only after precise calculation and complex design of the control start-up process. How to m...

Claims

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Application Information

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IPC IPC(8): H01J23/06H01J25/02H01J25/04
CPCH01J23/06H01J25/02H01J25/04
Inventor 孙迪敏马国武黄麒力胡林林卓婷婷曾造金张明君胡芯瑞
Owner INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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