Optimization of millimeter wave system in ITER Equatorial EC H&CD Launcher

被引：4
|
作者：
Kajiwara, K. [1 ]
Takahashi, K. [1 ]
Oda, Y. [1 ]
Kobayashi, N. [1 ]
Sakamoto, K. [1 ]
机构：
[1] Japan Atom Energy Agcy, Naka, Ibaraki 3110193, Japan
来源：
FUSION ENGINEERING AND DESIGN | 2014年 / 89卷 / 01期
关键词：
EC H&CD Launcher; High power millimeter wave; ITER; GYROTRON;
D O I：
10.1016/j.fusengdes.2013.10.013
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 high power (20 MW) and CW millimeter wave (mm-wave) injection is planned for Electron Cyclotron Heating and Current Drive (EC H&CD) in ITER. An optimization of the mm-wave system for the ITER EC H&CD Equatorial Launcher (EL) is performed. The optimization of the system is aimed to obtain the maximum transmission efficiency on the condition that 1.8 MW injection per waveguide, similar to 20 cm in beam radius at the resonance layer and narrow opening of the Blanket Shielding Module (BSM). The transmission efficiency of 99.1% from the end of the waveguide inside the launcher to the output of the BSM is achieved. The mm-wave propagation with high order modes is also calculated by using an experimentally obtained high power mm-wave beam pattern that includes 95%HE11, 0.6%LP11, 0.2%LP02 and 4.2% other higher order modes. The analysis predicts the 1-2% additional loss will be induced by the high order modes. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：6 / 10
页数：5
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