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A reflection-enhanced gyrotron

A technology of reflection enhancement and gyrotron, which is 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., which 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 overcoming, and reducing the requirements of mode competition

Active Publication Date: 2022-04-26
INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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  • A reflection-enhanced gyrotron

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as 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...

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Abstract

The invention discloses a reflection-enhanced gyrotron, which belongs to the technical field of millimeter wave devices. It mainly uses an electromagnetic wave reflector on the inside or outside of the output window of the gyrotron to reflect a part of the electromagnetic wave output by the gyrotron back to the inside of the tube body. , that is, a feedback process is introduced to enhance the beam effect of the entire gyrotron in the working mode, thereby reducing the requirement to overcome mode competition, making it easier for the gyrotron to achieve single-mode operation in a specified mode. In addition, the present invention also sets a special-shaped quasi-optical mode converter, so that the peripheral electromagnetic beam deviates from the original direction and turns over inside the gyrotron, thereby further enhancing the beam-wave interaction.

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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Patent Type & Authority Patents(China)
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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