Critical current measurement of commercial REBCO conductors at 4.2 K

被引：67
作者：
Tsuchiya, K. [1 ]
Kikuchi, A. [2 ]
Terashima, A. [1 ]
Norimoto, K. [3 ]
Uchida, M. [3 ]
Tawada, M. [1 ]
Masuzawa, M. [1 ]
Ohuchi, N. [1 ]
Wang, X. [1 ]
Takao, T. [3 ]
Fujita, S. [4 ]
机构：
[1] KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan
[2] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050003, Japan
[3] Sophia Univ, Tokyo 1028554, Japan
[4] Fujikura Ltd, Sakura, Chiba 2858550, Japan
来源：
CRYOGENICS | 2017年 / 85卷
基金：
日本学术振兴会;
关键词：
High-temperature superconductor; REBCO coated conductor; Critical current; n-Value; Non-Cu J(c); High magnetic field;
D O I：
10.1016/j.cryogenics.2017.05.002
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
REBCO coated conductors are now available from several industrial manufacturers and are expected to be promising conductors for high-field-magnet applications. Using these conductors, the development of solenoids capable of generating high magnetic fields of 20-30 T is ongoing in major high-field laboratories in the world. In addition, CERN recently launched a conceptual design study for the Future Circular Collider, in which a 20-T dipole magnet is listed as a candidate for the bending magnet of the main ring. However, there has been limited research published on the electrical transport properties of commercially available REBCO conductors in a high-field, low-temperature environment. For magnet designers, the transport properties are of the highest importance in choosing a suitable conductor, and the data form the bases for high-field magnet development. Therefore, in this work, a new sample holder, which allows the measurements of full-width conductors to be carried out relatively easily, was developed, and the transport properties of commercial REBCO conductors from seven manufacturers (AMSC, Fujikura, Shanghai Superconductor, SuNAM, SuperOx, SuperPower, and SWCC Showa) were investigated at 4.2 K in perpendicular fields of up to 18 T. The results show that the values at 4.2 K clearly vary to some extent among these commercial conductors and the higher-current 4-mm-wide conductors have I-c values in the range of 230-305 A at 18 T and in the range of 320-424 A at 12 T. (C) 2017 The Authors. Published by Elsevier Ltd.
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页码：1 / 7
页数：7
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