Matching of the ECRH transmission line of W7-X

被引：8
|
作者：
Michel, Georg [1 ]
Erckmann, Volker [1 ]
Hollmann, Frank [1 ]
Jonitz, Lothar [1 ]
Kasparek, Walter [2 ]
Laqua, Heinrich [1 ]
Lechte, Carsten [2 ]
Marushchenko, Nikolai [1 ]
Plaum, Burkhard [2 ]
Turkin, Yuriy [1 ]
Weissgerber, Michael [3 ]
机构：
[1] EURATOM, Teilinst Greifswald, Max Planck Inst Plasmaphys, D-17491 Greifswald, Germany
[2] Univ Stuttgart, Inst Plasmaforsch, D-70569 Stuttgart, Germany
[3] EURATOM, Max Planck Inst Plasmaphys, D-85748 Garching, Germany
来源：
FUSION ENGINEERING AND DESIGN | 2013年 / 88卷 / 6-8期
关键词：
ECRH; W7-X; Transmission line;
D O I：
10.1016/j.fusengdes.2012.11.026
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
The polarization of the directed ECRH power has to be matched to the plasma boundary with respect to the magnetic field at the density gradient region close to the last closed flux surface (LCFS). This is achieved by means of grooved mirrors, which provide the required polarization and which are part of the matching optics unit (MOU) of the gyrotrons. The RF radiation from the gyrotrons has to pass typically 16 mirrors in a complex three-dimensional arrangement in order to reach the plasma. The paper discusses the modeling of the ECRH transmission in order to find the required polarizer adjustment for each possible injection angle and plasma wave type (O- or X-mode). This includes the calculation of the polarization state on the plasma boundary, the back-propagation through the transmission line up to the MOO and finally the calculation of the corresponding angles of both polarizers. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：903 / 907
页数：5
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