Quasi-optical polarizer system for ECHCD experiments in the QUEST
Quasi-optical polarizer system for ECHCD experiments in the QUEST
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用于 QUEST 中 ECHCD 实验的准光学偏振器系统
DOI：
10.1016/j.fusengdes.2019.02.099
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发表时间：
2019
影响因子：
1.7
通讯作者：
R. Ikezoe
中科院分区：
文献类型：
--
作者：
M. Fukuyama;H. Idei;T. Tsujimura;S. Kubo;S. Kobayashi;M. Yunoki;T. Onchi;R. Ikezoe
研制了一条从28 GHz回旋管到Quest球形托卡马克(ST)的新型传输线，用于电子回旋加热和电流驱动(ECHCD)实验。ECHCD效应取决于注入光束的入射模式或偏振态。尽管在QUEST中开发了两个波纹偏振器斜接弯头并将其组装到传输线上，但在传输高功率毫米波时，偏振器斜接弯道上的弧光事件经常被检测到。提出了一种新的准光学(QO)概念，用于由两个波纹板和一个准光学反射镜组成的偏振器系统，以避免在偏振器处产生弧光。设计了用于偏振器输入输出HE11模耦合的QO镜，并用基尔霍夫积分讨论了QO镜的耦合特性。在低功率测试系统上对所研制的QO偏振器的偏振设定性能进行了测试，并结合光栅-偏振器的计算进行了讨论。
A new transmission line from 28 GHz gyrotron to QUEST spherical tokamak (ST) has been developed for the highly efficient electron cyclotron heating and current drive (ECHCD) experiments. The ECHCD effect depends on the incident mode or polarization states of the injected beam. Although two corrugated-polarizer miter bends were developed and assembled to transmission line in the QUEST, arcing events were frequently detected at the polarizer miter bend when the high-power millimeter-wave were transmitted. A new quasi-optical (QO) concept for the polarizer system composed of two corrugated plate and a QO mirror was proposed to avoid the arcing at polarizer. The QO mirror was designed for coupling of input and output HE11modes at the polarizer, its coupling property is discussed with Kirchhoff integral. Polarization-setting performance of the developed QO polarizer was examined in a low-power test system, and is discussed with grating-polarizer calculation.
针对 28 GHz QUEST ECH/ECCD 系统的低欧姆损耗和任意偏振态偏振器的优化设计
影响因子：
1.7
作者：
Toru Ii Tsujimura;Hiroshi Idei;Shin Kubo;Sakuji Kobayashi
通讯作者：
Sakuji Kobayashi