Journal ArticleDOI
Strain scaling law for flux pinning in practical superconductors. Part 1: Basic relationship and application to Nb3Sn conductors
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TLDR
In this article, the authors present the basic uniaxial-strain scaling relationship and focus on its application to Nb3Sn conductors, and propose a general scaling relation which unifies the usual temperature scaling relation with this strain-scaling relation.About:
This article is published in Cryogenics.The article was published on 1980-11-01. It has received 398 citations till now. The article focuses on the topics: Pinning force & Flux pinning.read more
Citations
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Journal ArticleDOI
Neutron Diffraction Measurements of Internal Strain in ${\rm Nb}_{3}{\rm Sn}$ Cable-In-Conduit Conductors
Tsutomu Hemmi,Stefanus Harjo,Takashi U. Ito,Kunihiro Matsui,Yoshihiko Nunoya,Norikiyo Koizumi,Y. Takahashi,H. Nakajima,Kazuya Aizawa,Hiroshi Suzuki,Shutaro Machiya,Hidetoshi Oguro,Yoshinori Tsuchiya,Kozo Osamura +13 more
TL;DR: In this article, the internal strain of Nb3Sn strands in CICC was determined by neutron diffraction measurement using Takumi of J-PARC, which was used to evaluate the superconducting performance.
Journal ArticleDOI
The origin of prestress in binary and ternary Nb 3 Sn multifilamentary wires
W. Goldacker,R. Flukiger +1 more
TL;DR: In this paper, high resolution neutron powder diffractometry at temperatures between 10 K and 800 K was performed on commercially available Nb 3 Sn multifilamentary superconducting wires with additions of 1.6 Ti, 0.5 Ti and 7.5 Ta (wt.).
Journal ArticleDOI
React and Wind ${\rm Nb}_{3}{\rm Sn}$ Common Coil Dipole
Ramesh Gupta,Michael Anerella,J. Cozzolino,J. Escallier,G. Ganetis,A.K. Ghosh,Michael Harrison,Joseph Muratore,W. B. Sampson,P. Wanderer +9 more
TL;DR: In this paper, the authors present a summary of the design, construction and test results of a common coil dipole DCC017 made using ldquoreact & windrdquo Nb3Sn technology.
Journal ArticleDOI
Influence of the heat-treatment conditions, microchemistry, and microstructure on the irreversible strain limit of a selection of Ti-doped internal-tin Nb3Sn ITER wires*
Najib Cheggour,Najib Cheggour,Peter J. Lee,Loren F. Goodrich,Loren F. Goodrich,Zu Hawn Sung,Theodore C. Stauffer,Jolene D. Splett,M. C. Jewell +8 more
TL;DR: In this paper, the intrinsic irreversible strain limit eirr,0, microstructure, and microchemistry were made on several internal-tin Nb3Sn pre-production wires, fabricated for the domestic agencies of the USA and China participating in the International Thermonuclear Experimental Reactor.
Journal ArticleDOI
Status of Nb3Sn strand development in Korea
Pyeongyeol Park,Keeman Kim +1 more
TL;DR: In this article, the design concept, the fabrication procedure and the result of the strand performance test are discussed, and the characterization of the strands are performed by hysteresis loss measurement, RRR (Residual Resistivity Ratio), n -value, and critical current density measurement vs. temperature, magnetic field, and strain.
References
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Journal ArticleDOI
Flux vortices and transport currents in type II superconductors
A. M. Campbell,J. E. Evetts +1 more
TL;DR: In this paper, the authors considered the effects of lattice rigidity on the summation of pinning forces and showed that a summation based on statistical arguments uses the same approximations and leads to the same results as a dissipation argument.
Journal ArticleDOI
Scaling laws for flux pinning in hard superconductors
TL;DR: In this paper, it was shown that the peak in Fp scales as [Hc2(T)]2.5 if the temperature is changed; the maximum value of Fp occurred at the same value of reduced field regardless of temperature.
Journal ArticleDOI
Flux pinning mechanisms in type II superconductors
TL;DR: In this article, expressions for flux-pinning in type II superconductors are derived from considerations of the nature of the interaction between individual flux-lines and pinning-centres, and of the geometry of th...
Journal ArticleDOI
Hysteresis in Superconducting Alloys-Temperature and Field Dependence of Dislocation Pinning in Niobium Alloys
W. A. Fietz,W. W. Webb +1 more
TL;DR: In this paper, critical current and pinning-force densities in a series of niobium alloys subjected to severe plastic deformation have been determined from measurements of complete hysteretic magnetization curves on alloys with Ginzburg-Landau parameter $\ensuremath{\kappa}$ between 1.3 and 13 at temperatures from the critical temperature ${T}_{c}$ down to $0.14{T}
Journal ArticleDOI
Elastic energy of the vortex state in type II superconductors. I. High inductions
TL;DR: In this article, the elastic properties of the flux line lattice (FLL) in type II superconductors are calculated from the linearized Ginzburg-Landau (GL) theory for large inductions.