Speaker
Description
To match the electron cyclotron wave with the plasma efficiently, we design two polarizers including a linear polarizer and an elliptical polarizer for the 105 GHz electron cycltron resonance heating system on J-TEXT. The linear polarizer is mainly used to change the rotation angle of the wave, while the ellipticity of the wave is regulated by the ellptical polarizer. The sinusoidal grooves are applied to improve power capability. The poalrizers were manufactured, and we set up a low power test platform to measure polarization characteristics of the polarizers. To improve accuracy of measurement, the detecor was calibrated with the standard wave source. The test reuslts agree well with the design parameters. Therefore, we think the desigend polairers can meet requirements of the electron cyclotron resonance heating system on J-TEXT.
