The design of a slit ICRF antenna in EU-DEMO

被引：0
|
作者：
Kasahara, H. [1 ]
Saito, K. [1 ,2 ]
Seki, T. [1 ]
Mutoh, T. [3 ]
机构：
[1] Natl Inst Nat Sci, Natl Inst Fus Sci, Gifu 5095292, Japan
[2] Grad Univ Adv Studies, SOKENDAI, Gifu 5095292, Japan
[3] Chubu Univ, Kasugai, Aichi 4878501, Japan
来源：
FUSION ENGINEERING AND DESIGN | 2023年 / 189卷
关键词：
ICRF heating; ICRF antenna; High power density; Electric field; DEMO; Reactor;
D O I：
10.1016/j.fusengdes.2023.113453
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：
Although ICRF heating has achieved the high heating efficiency necessary to achieve high-performance plasmas, it has not overcome the reliability and economic problems associated with the antenna structure inside the vacuum vessel in fusion reactors. We suggested a slit ICRF antenna that uses the blanket surface as a transmission line to solve these problems. With a single slit ICRF antenna with a width of 3 m and a height of 15 cm, the electric field strength to the magnetic field direction was successfully suppressed to 5 kV/cm when 20 MW of power radiation was achieved from the single slit. The slit ICRF antenna had a bending angle in the electromagnetic wave transmission path to prevent direct neutron impact on the first wall and a vacuum gate from rapidly preventing water or air leakage accidents. The slit ICRF antenna has a simple structure that allows heating at high power density while minimizing blanket volume reduction.
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页数：6
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