Electric currents in REBaCuO superconducting tapes

被引：18
作者：
Jirsa, M. [1 ,2 ]
Rames, M. [1 ]
Duran, I. [2 ]
Melisek, T. [3 ]
Kovac, P. [3 ]
Viererbl, L. [4 ]
机构：
[1] Inst Phys CAS, Slovance 2, CZ-18221 Prague 8, Czech Republic
[2] Inst Plasma Phys CAS, Slovankou 1782-3, CZ-18200 Prague 8, Czech Republic
[3] Inst Elect Engn SAS, Dubravska Cesta 9, Bratislava 84104, Slovakia
[4] Res Ctr Rez, Hlavni 130, CZ-25068 Husinec Rez, Czech Republic
来源：
SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2017年 / 30卷 / 04期
关键词：
superconducting tapes; REBaCuO; critical currents; induction and transport; pinning force density; magnetic relaxation; neutron irradiation; FAST-NEUTRON IRRADIATION; MAGNETIC-FIELDS; TEMPERATURE; DEPENDENCE; THICKNESS; WIRES;
D O I：
10.1088/1361-6668/aa5bbf
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Magnetic induction and current transport techniques were employed to test the electromagnetic performance of 22 samples of superconducting REBaCuO tapes of several manufacturers with the aim to select the best candidates for wiring new generation superconducting magnets for fusion reactors. An extraordinary shape of pinning force density as a function of magnetic field was observed in 'advanced pinning, AP' SuperPower tapes. The induced currents enabled us to classify the tapes and show the best ones, at low temperatures and high magnetic fields on the one hand and at high temperatures and low magnetic fields on the other hand. Transport current experiments confirmed the results. Moreover, they provided information on current anisotropy, which appeared to be specific for each tape type. The present results formed a basis for the ongoing study of neutron irradiation impact on the tapes' properties. The first experiment showed that neutron irradiation by the fluence of 2.1 E22 m(-2) either enhances, reduces, or has no effect on the tape's properties, according to the tape pinning structure.
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页数：8
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