Development of a dummy load and waveguide components for 1 MW CW gyrotron

被引：4

作者：

Ioki, Kimihiro ^{[1
]}

Hiranai, Shinichi ^{[2
]}

Moriyama, Shinichi ^{[2
]}

Tanaka, Suguru ^{[1
]}

机构：

[1] Toyama Co Ltd, 3816-1 Kishi, Ymakita, Kanagawa 2580112, Japan

[2] Japan Atom Energy Agcy, Naka Fus Inst, 801-1 Mukoyama, Naka, Ibaraki 3110193, Japan

来源：

FUSION ENGINEERING AND DESIGN | 2016年 / 109卷

关键词：

Millimeter wave; Electron cyclotron heating; Dummy load; Radiofrequency power; Ceramic coating;

D O I：

10.1016/j.fusengdes.2016.01.046

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：

A dummy load dissipates the radiofrequency power and is required for the electron cyclotron heating system to test and adjust a gyrotron or a transmission line in ITER and JT60SA. The dummy load is comprised of a water-cooled vacuum chamber and a reflector. The vacuum chamber has intensive cooling and the inside surface has a ceramic coating layer. It is important that the dummy load has reliable durability and long lifetime. Linear movement is used as a main mechanism for the reflector to mitigate the heat deposition concentration instead of rotating reflector. The vacuum boundary for the linear movement is simply made with bellows and the bellows is accessible from the outside. The distribution of the ceramic coating thickness is carefully optimized considering the heat deposition rate. Another critical issue is to minimize the back reflection of the RF power from the dummy load. However, it is desired to design the dummy load without the pre-dummy-load. A prototypical dummy load will be manufactured and tested, following the design phase. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：951 / 955

页数：5

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