Performance Boost in Industrial Multifilamentary Nb3Sn Wires due to Radiation Induced Pinning Centers

被引：23

作者：

Baumgartner, T. ^{[1
]}

Eisterer, M. ^{[1
]}

Weber, H. W. ^{[1
]}

Fluekiger, R. ^{[2
]}

Scheuerlein, C. ^{[2
]}

Bottura, L. ^{[2
]}

机构：

[1] Vienna Univ Technol, Atominst, A-1020 Vienna, Austria

[2] CERN, CH-1211 Geneva 23, Switzerland

来源：

SCIENTIFIC REPORTS | 2015年 / 5卷

关键词：

NEUTRON-IRRADIATION; TEMPERATURE; BEHAVIOR;

D O I：

10.1038/srep10236

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We report non-Cu critical current densities of 4.09.10(9) A/m(2) at 12 T and 2.27.10(9) A/m(2) at 15 T obtained from transport measurements on a Ti-alloyed RRP Nb3Sn wire after irradiation to a fast neutron fluence of 8.9.10(21) m(-2). These values are to our knowledge unprecedented in multifilamentary Nb3Sn, and they correspond to a J(c) enhancement of approximately 60% relative to the unirradiated state. Our magnetometry data obtained on short wire samples irradiated to fast neutron fluences of up to 2.5.10(22) m(-2) indicate the possibility of an even better performance, whereas earlier irradiation studies on bronze-processed Nb3Sn wires with a Sn content further from stoichiometry attested a decline of the critical current density at such high fluences. We show that radiation induced point-pinning centers rather than an increase of the upper critical field are responsible for this J(c) enhancement, and argue that these results call for further research on pinning landscape engineering.

引用

页数：7

共 23 条

[1] Effects of neutron irradiation on pinning force scaling in state-of-the-art Nb3Sn wires [J].