# IEEE Transactions on Applied Superconductivity

## Filter Results

Displaying Results 1 - 19 of 19
• ### PBMap: A Path Balancing Technology Mapping Algorithm for Single Flux Quantum Logic Circuits

Publication Year: 2019, Article Sequence Number: 1300114
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This paper presents a path balancing technology mapping algorithm, which is a new algorithm for generating a mapping solution for a given Boolean network such that the average logic level difference among fanin gates of each gate in the network is minimized. Path balancing technology mapping is required in dc-biased single flux quantum (SFQ) circuits for guaranteeing the correct operation, and it ... View full abstract»

• ### Development of an All-SFQ Superconducting Field-Programmable Gate Array

Publication Year: 2019, Article Sequence Number: 1300212
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Recent advances in fabrication complexity and density—especially for the Institute of Advanced Industrial Science and Technology (AIST) advanced process 2 (ADP2) process and the MIT Lincoln Lab (MITLL) SFQ5ee process and beyond—allow the implementation of a superconducting field-programmable gate array (SFPGA) with sufficient complexity to host a number of different programmed functions. We discus... View full abstract»

• ### A Wideband HTS Filter Using Strong Coupling Coplanar Spiral Resonator Structure

Publication Year: 2019, Article Sequence Number: 1500105
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A novel coplanar spiral resonator structure, which has a stronger coupling strength than a normal coplanar waveguide (CPW) structure, is introduced. This structure helps to realize the remarkable strong coupling required for low-frequency wideband filters. Although no grounded stubs are deployed to balance the ground plane, the slot-line mode of the filter is not excited. An eight-pole wideband hi... View full abstract»

• ### Quasi-Elliptic Function HTS Filter With Controllable Transmission Zeros

Publication Year: 2019, Article Sequence Number: 1500206
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A miniaturized eight-order quasi-elliptic function filter configuration with controllable transmission zeros (TZs) is proposed. Without changing the overall layout of the filter, two pairs of TZs are introduced by adopting two cascaded quadruplet (CQ) units to improve the suppression of the filter. At the same time, a cross capacitance coupling is introduced to combine the two CQ units to realize ... View full abstract»

• ### The Asymmetrical Split Phenomenon of the Odd and Even Modes and Its Application to UWB HTS Filters

Publication Year: 2019, Article Sequence Number: 1500308
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This paper analyzes the asymmetrical split phenomenon of the odd and even modes in microstrip for closely coupled resonators. In general, when two resonators are coupled, the odd- and even-mode split is asymmetrical. This paper finds that, for two closely coupled resonators, odd mode always changes faster than even mode. This asymmetrical phenomenon is first predicted by using the effective capaci... View full abstract»

• ### Investigations of theT1Temperature Dependence of Protons in Water and Contrast Agents Using a High-TcDC-SQUID-Based ULF NMR System

Publication Year: 2019, Article Sequence Number: 1600104
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The temperature dependence of proton's spin-lattice relaxation time T1 in water samples and Gd-based contrast agents with a measurement field of 72 μT was systematically studied by dc-SQUID-based ultralow field (ULF) nuclear magnetic resonance (NMR) spectrometer. The temperature of samples was controlled by a thermostatic bath and the standard error of T1 was around 0.01 s within five different gr... View full abstract»

• ### Three-Terminal Superconducting Digital Transistor

Publication Year: 2019, Article Sequence Number: 1800206
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Discrete array of small Josephson junctions can exhibit flux-flow behavior, which is drastically different from that of long Josephson junctions. In particular, the flux-flow voltage does not monotonically increase with magnetic field; rather, it decreases after a threshold until it reaches zero. Here, using simulation and experimental results, we show that the flux-flow voltage switches abruptly ... View full abstract»

• ### Subharmonic Resonance in Magnetic Levitation of the High-Temperature Superconducting Bulks YBa2Cu3O7‐x Under Harmonic Excitation

Publication Year: 2019, Article Sequence Number: 3600908
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High-temperature superconducting (HTS) bulk YBa2Cu3O7‐x (YBCO) can achieve self-stable magnetic levitation (maglev) over a permanent magnet (PM) for its inherent flux pinning effect, which has considerable potential for engineering applications. The complicated vibration response, however, is lacking in research for the nonlinearity of t... View full abstract»

• ### Mechanical Design, Assembly, and Test of LPF1: A 10.2 T Nb3Sn Common-Coil Dipole Magnet With Graded Coil Configuration

Publication Year: 2019, Article Sequence Number: 4000108
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An Nb3Sn/NbTi subscale dipole magnet named LPF1 with graded coil design and common-coil configuration has been designed, assembled, and tested at the Institute of High Energy Physics, Beijing, China. Compared to the previously proposed FECD1, LPF1 is designed with a longer outer NbTi racetrack coil to reduce the peak field in the coil end. The computed bore field and peak coil field of ... View full abstract»

• ### Design, Fabrication, and Test of a 2-T Superconducting Dipole Prototype by Using Tilted Solenoids

Publication Year: 2019, Article Sequence Number: 4000205
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A novel design of the superconducting dipole magnet, which superposes two concentric and oppositely titled solenoids with respect to the bore axis, is briefly described. A dipole magnet prototype of 2 T is designed and constructed based on this conception. The prototype magnet consists of four layers tilted solenoids by using a 7-strands NbTi superconducting cable. Its operating current is up to 3... View full abstract»

• ### Magnetic Field Mapping of the CLAS12 Torus—A Comparative Study Between the Engineering Model and Measurements at JLab

Publication Year: 2019, Article Sequence Number: 4000310
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This paper provides an overview of the magnetic field measurement and subsequent electromagnetic re-modeling of the CLAS12 torus during the commissioning of the magnet in the fall of 2016. The CLAS12 detector in Hall B is part of the 12 GeV Accelerator Upgrade project at Jefferson Lab. The torus magnet allows precise determination of particle momenta within a cone ∼ (5°–40°) in the forward directi... View full abstract»

• ### Energy Density Method: An Approach for a Quick Estimation of Quench Temperatures in High-Field Accelerator Magnets

Publication Year: 2019, Article Sequence Number: 4900116
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Accelerator magnets for future particle accelerators are designed to work with as high energy densities as possible to achieve high fields and compact magnet designs. A key factor limiting the energy density is given by the protection in case of a quench: If a quench occurs, the stored energy must be first absorbed by the windings, and the magnet temperature shall not exceed a given limit. In this... View full abstract»

• ### Development and Long-Term Test of a Compact 154-kV SFCL

Publication Year: 2019, Article Sequence Number: 5600106
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A compact 154-kV superconducting fault current limiters (SFCL) system has been developed by Korea Electric Power Corporation and led to a primary prototype being tested for three months at Gochang Power Test Center. Due to the fact that the volume of the primary model was still relatively large for application to substations, a compact system was designed. To reduce the volume of the SFCL system, ... View full abstract»

• ### Heat Treatment Effect on the Microstructure and Properties of a High-Strength and High-Conductivity Cu–Nb–Cu Microcomposite

Publication Year: 2019, Article Sequence Number: 6000205
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Cu–Nb–Cu microcomposite reinforced by Nb tube was successfully fabricated by accumulative drawing and bundling process. When the strength of the Cu–Nb–Cu composite reaches above 1 GPa, the conductivity can reach 67% International Annealed Copper Standard (IACS). The annealing effects on the microstructure and properties of the Cu–Nb–Cu microcomposite have been thoroughly discussed. Annealing tempe... View full abstract»

• ### Electrical Behavior and Current Transfer Length of Fe- and Cu-Sheathed MgB$_2$Superconducting Single-Core Wires

Publication Year: 2019, Article Sequence Number: 6200106
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Estimation of the current transfer length (CTL) and the electric field of single-core superconducting wires for various materials having different cross-sectional compositions of superconducting core:barrier:sheath material are theoretically studied employing an analytical method. The results indicate that Fe-sheathed single-core superconducting wires can be preferable as compared to Cu-sheathed s... View full abstract»

• ### Influence of the Substrate Surface Morphology on the Texture of Magnesium Oxide Films Grown Via Inclined Substrate Deposition

Publication Year: 2019, Article Sequence Number: 6900206
Cited by:  Papers (1)
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For the deposition of inclined substrate deposited MgO with application as a texture buffer in high temperature superconducting wires, the surface morphology of the metallic substrate plays a crucial role. The influence of various substrate surface morphologies (polished, etched, and rolled surfaces) is investigated. It is found that morphologies with the preferred orientation perpendicular to the... View full abstract»

• ### Stainless Steel as Substrate Material for High-Temperature Superconducting Tapes Processed Via the ISD MgO Route

Publication Year: 2019, Article Sequence Number: 6900309
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Second-generation high-temperature superconducting (HTS) tapes strongly rely on the substrate material, in many cases Hastelloy C276 (“H-C276”). In order to ameliorate performance (and reduce the price) of superconducting tapes, replacement of H-C276 has been investigated. In this paper, the potential of the readily available austenitic stainless steels X2CrNiMo17-12-2 (“CrNiMo”) and X11CrNiMnN19-... View full abstract»

• ### Corrections to “The Dielectric Strength of Nomex 410 Paper in Liquid Nitrogen Under Boiling Situations”

Publication Year: 2019, Article Sequence Number: 9700201
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Corrections to “The Dielectric Strength of Nomex 410 Paper in Liquid Nitrogen under Boiling Situations” View full abstract»

• ### Erratum to “Experimental Study of Normal Zone Propagation in the Short Sample of Bi-2223/Ag/AgMg Tape in Two Different Cooling Modes”

Publication Year: 2019, Article Sequence Number: 9700301
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## Aims & Scope

IEEE Transactions on Applied Superconductivity contains articles on the applications of superconductivity and other relevant technology.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Alexander Polasek
Electrical Energy Research Center (Cepel)

polasek@cepel.br