<![CDATA[ IEEE Transactions on Applied Superconductivity - new TOC ]]>
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TOC Alert for Publication# 77 2017May 18<![CDATA[Analysis of Nonlinearity in Step in Width Discontinuity of Superconducting Coplanar Waveguide Structures]]>275191205<![CDATA[Surface Resistance of Superconductors in the Presence of a DC Magnetic Field: Frequency and Field Intensity Limits]]>27516388<![CDATA[Broadband Electromagnetic Modeling of the Superconducting Toroidal Field Magnets of JT-60SA: Transient Simulation and Fault Detectability]]>27518889<![CDATA[Modeling of Quench in the Coupled HTS Insert/LTS Outsert Magnet System of the NHMFL]]>2751131705<![CDATA[Residual Stress in Nb3Sn Superconductor Strand Introduced by Structure and Stoichiometric Distribution After Heat Treatment]]>3Sn, a widely adopted superconducting material, suffers from fragility and sensitivity to strain. Many studies have anticipated these drawbacks to be greatly influenced by thermal expansion mismatch between the Nb_{3}Sn superconducting phase and matrix. We conducted X-ray diffraction (XRD) stress analysis on a heat treated bronze strand at room temperature and found that its average axial residual stress was -135.7 MPa with fluctuation of about 300 MPa. We developed an elastic analytical model and explained the overall compression. The considerable stress fluctuation phenomenon may originate from diffusion, which was supported by electron probe microanalysis results. This work highlights the importance of volume transmutation and component distribution on the stress status of a superconducting strand and can supplement the thermal mismatch model.]]>27519445<![CDATA[Effect of Tape's <inline-formula><tex-math notation="LaTeX">$I_{rm c}$</tex-math></inline-formula> Inhomogeneity and Strand Misalignment on the Transport Capacity of Roebel Cables]]>$I_{rm c}$ nonuniformities and of nonperfect strand alignment on the critical current of Roebel cables made of an HTS-coated conductor tape. For this purpose, we perform a statistical analysis using a recently developed and freely available open-source code to calculate the critical current of Roebel cables. We find that, for the considered cases, the nonuniformity of the strands’ $I_{rm c}$ can have a significant impact on the final critical current of the cable, whereas the influence of the misalignment of the strands is rather low.]]>27515450<![CDATA[Numerical Simulations of AC Losses in Multifilamentary Superconducting Tapes Under Bending Strain]]>2Cr_{2}Ca_{2}Cu_{ 3}O_{10} (Bi2223)/Ag tapes under bending deformation are investigated. Bi2223 tape consists of Ag matrix and Bi2223 filaments, and the ac losses are generated by transport current and external field. By considering the plastic deformation of Ag matrix and residual strain, the simplified mechanical fracture model is established. Then, the finite element method analysis is used to investigate the relation of critical current and ac loss with bending deformations, and the losses are presented for different transport current and external magnetic field conditions. The influences of filament fracture on the ac loss are discussed for transport current and external magnetic field cases, respectively.]]>275110629