Minimization of the Ohmic Loss of Grooved Polarizer Mirrors in High-Power ECRH Systems

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• 作者：D. Wagner ; F. Leuterer ; W. Kasparek…
• 关键词：Electron cyclotron resonance heating ; Polarizer ; Ohmic loss
• 刊名：Journal of Infrared, Millimeter, and Terahertz Waves
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：38
• 期：2
• 页码：191-205
• 全文大小：7819KB
• 刊物类别：Physics and Astronomy
• 刊物主题：Electrical Engineering; Electronics and Microelectronics, Instrumentation; Classical Electrodynamics;
• 出版者：Springer US
• ISSN：1866-6906
• 卷排序：38

文摘

A set of two corrugated polarizer mirrors is typically used in high-power electron cyclotron resonance heating (ECRH) systems to provide the required polarization of the ECRH output beam. The ohmic losses of these mirrors can significantly exceed the losses of plane mirrors depending on the polarization of the incident beam with respect to the orientation of the grooves. Since polarizer mirrors incorporated into miter bends of a corrugated waveguide line are limited in size, active water cooling can become critical in high-power cw systems like the one for ITER. The ohmic loss of polarizer mirrors has been investigated experimentally at high power. A strategy to minimize the losses for given mirror geometries has been found.