Manufacturing of pedestal supporting error field correction coil in JT-60SA

被引：0
|
作者：
Nakamura, Shigetoshi [1 ]
Matsunaga, Go [1 ]
Takechi, Manabu [1 ]
Tsuru, Daigo [1 ]
Yamamoto, Satoshi [1 ]
Isayama, Akihiko [1 ]
机构：
[1] Natl Inst Quantum Sci & Technol, Chiba, Japan
来源：
FUSION ENGINEERING AND DESIGN | 2023年 / 194卷
关键词：
Error field correction coil; Electromagnetic force; Thermal displacement; JT-60SA;
D O I：
10.1016/j.fusengdes.2023.113713
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：
Eighteen error field correction coils (EFCCs) consisting of copper conductor and epoxy resin are installed in the vacuum vessel of JT-60SA in order to correct magnetic fields caused by manufacturing and installation errors of superconducting coils. Pedestals consisting of plate and spring bars for supporting the EFCCs were designed to withstand electromagnetic force during plasma operations and allow relative displacement between the EFCC at 40 degrees C and the vacuum vessel at 200 degrees C during baking operations. Feasibility of fixing the ends of the spring bars to the plates with plug welding and clearance of 50 mu m was investigated using mechanical load test and trial manufacturing. Design for manufacturing was decided based on the results. Structural integrity of the design was confirmed through structural analysis with finite element method (FEM). Manufacturing of the pedestals has successfully completed.
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页数：7
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