The coordinate transformation method for design of polarizers on HL-2A electron cyclotron resonance heating and current drive systems.
The coordinate transformation method for design of polarizers on HL-2A electron cyclotron resonance heating and current drive systems.
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DOI：
10.1063/1.4824144
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发表时间：
2013-10
期刊：
影响因子：
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通讯作者：
D. Xia;M. Huang;Jin Zhou;J. Rao;Zhuang Ge
中科院分区：
文献类型：
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作者：
D. Xia;M. Huang;Jin Zhou;J. Rao;Zhuang Ge
在电子回旋共振加热和电流驱动（ECRH和CD）系统中，偏振器被广泛用于改变毫米波的偏振态。本文提出了一种基于坐标变换和傅里叶展开的新方法（简称C法），用于HL-2A装置ECRH和CD系统偏振片的设计。该方法将光栅问题转化为本征值问题，使其易于理解和求解。C-方法，积分方法，和低功耗测试结果之间的比较。这表明C方法可以作为一种严格的数值方法用于偏振器的设计。最后，基于C-方法设计了两个偏振器，它们可以一起使用，以实现几乎任意的偏振。
Polarizers are widely used to change the polarization of millimeter waves on the electron cyclotron resonance heating and current drive (ECRH and CD) systems. A new method based on the coordinate transformation and the Fourier expansion (the so-called C-method) has been developed for design of polarizers on the HL-2A ECRH and CD systems. This method transforms the grating problem to an eigenvalue problem, making it easy and clear to understand and solve. The comparison between the C-method, the integral method, and the low power test results is presented. It indicates that the C-method can be considered as a rigorous numerical method for the design of polarizers. Finally, two polarizers were designed based on the C-method which can be used together to achieve almost arbitrary polarization.