A Rapidly Controllable Polarizer for High Power Electron Cyclotron Resonance Heating System

Abstract

The invention belongs to the field of microwave technology, in particular to a rapidly controllable polarizer for a high-power electron cyclotron resonance heating system. The invention includes a microwave reversing waveguide, a mounting substrate, a polarizing mirror, a polarizing mirror rotating mechanism and a rotating driving mechanism; the microwave reversing elbow is used to transmit high-power microwaves to realize 90-degree reversing of the microwave transmission direction; the mounting substrate is used for Position the polarizing mirror and its rotation and driving mechanism on the microwave reversing elbow; the polarizing mirror is used to reflect the microwave and realize the change of the microwave polarization form when it rotates; the polarizing mirror rotating mechanism is used to realize the vacuum environment The rotation of the lower polarization mirror; the rotation drive mechanism is used to realize the precise positioning control and protection of the rotation of the polarization mirror; the invention has high positioning accuracy, remote fast controllability, stable and efficient transmission of MW level long pulse millimeter waves, and can meet The electronic gyrosystem requires arbitrary control of the microwave polarization form.

Description

technical field [0001] The invention belongs to the field of microwave technology, in particular to a rapidly controllable polarizer for a high-power electron cyclotron resonance heating system. Background technique [0002] In electron cyclotron resonance heating systems, microwaves reaching the resonant layer require specific microwave polarization forms to carry out ordinary (O) mode or extraordinary (X) mode heating. The ratio of O-mode and X-mode varies depending on the microwave polarization form and incident angle. When changing the plasma operating parameters or microwave incident angle, the microwave polarization form must be changed to achieve efficient coupling between the wave and the plasma. The microwave output by the wave source gyrotron is usually a linearly polarized wave. Generally, a polarizer needs to be used to change the polarization mode of the wave during the wave transmission process to obtain an elliptical polarized wave or a circular polarized wave...

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Problems solved by technology

[0004] In view of the above prior art, the present invention provides a fast controllable polarizer for a high-power electron cyclotron resonance heating system to solve the problem that the existing technology cannot be used in the electron cyclotron vacuum transmission system, and the positioning accuracy can only be caused by manual operation. It is not high and cannot be automatically matched with the antenna to achieve high-efficiency coupling; the invention is also used to solve technical problems such as rapid rotation of the polarized mirror under vacuum conditions, high positioning accuracy and precise control of the rotation angle, so as to ensure the smoothness of the polarized mirror in the vacuum environment. , reliable and accurate rotation

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