# IEEE Transactions on Applied Superconductivity

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Displaying Results 1 - 25 of 28
• ### [Front cover]

Publication Year: 2014, Article Sequence Number: 0003001
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• ### IEEE Transactions on Applied Superconductivity publication information

Publication Year: 2014, Article Sequence Number: 0003101
| PDF (135 KB)

Publication Year: 2014, Article Sequence Number: 0003202
| PDF (113 KB)
• ### IEEE Transactions on Applied Superconductivity subject categories for article numbering

Publication Year: 2014, Article Sequence Number: 0003301
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• ### IEEE Transactions on Applied Superconductivity information for authors

Publication Year: 2014, Article Sequence Number: 0003401
| PDF (106 KB)
• ### Pulse-Bias Electronics and Techniques for a Josephson Arbitrary Waveform Synthesizer

Publication Year: 2014, Article Sequence Number: 1400107
Cited by:  Papers (15)
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The Josephson arbitrary waveform synthesizer (JAWS) is a series array of thousands of superconducting Josephson junctions that are biased by current pulses such that the array produces voltage waveforms with quantum accuracy. Intrinsically accurate voltage waveforms synthesized with the quantized pulses from Josephson junctions were first demonstrated in 1996. Ten years later, a commercial ac stan... View full abstract»

• ### Accurate Real-Time Monitoring of Quality Factor and Center Frequency of Superconducting Resonators

Publication Year: 2014, Article Sequence Number: 1500605
Cited by:  Papers (2)
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In this paper, we track both center frequency and quality factor of a superconducting microwave resonator with very high precision using a modified Pound-Drever-Hall frequency locking scheme. The quality factor measurements can be done with high enough bandwidth to study different processes in a superconducting resonator in real time. With this added functionality, the frequency readout remains un... View full abstract»

• ### Design of a High-Power Superconducting Filter With Novel DGS Structures

Publication Year: 2014, Article Sequence Number: 1500905
Cited by:  Papers (2)
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A novel defected ground structure (DGS) resonator with improved power handling capability is proposed in this paper. The current density distribution of the DGS resonator is simulated and compared with that of the complete ground structure (CGS) resonator. Simulation shows that the maximum current density of the DGS resonator is lower than that of the CGS resonator. Two four-pole bandpass high-tem... View full abstract»

• ### Four-Pole Narrowband Superconducting Tunable Filter at VHF-Band

Publication Year: 2014, Article Sequence Number: 1501005
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This paper presents a narrowband superconducting tunable filter at very high frequency (VHF)-band with a fractional bandwidth of 1.4%. The effect of the resonator structure on the unloaded quality factor and frequency tuning range is analyzed and simulated. A shorted spiral resonator, with the inner end loaded with a gallium arsenide (GaAs) varactor through air bridges, is chosen for compact size,... View full abstract»

• ### Negative Differential Resistance due to Nonlinearities in Single and Stacked Josephson Junctions

Publication Year: 2014, Article Sequence Number: 1800407
Cited by:  Papers (2)
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Josephson junction systems with a negative differential resistance (NDR) play an essential role for applications. As a well-known example, long Josephson junctions of the BSCCO type have been considered as a source of terahertz radiation in recent experiments. Numerical results for the dynamics of the fluxon system have demonstrated that a cavity induced NDR plays a crucial role for the emission o... View full abstract»

• ### Power Load and Temperature Dependence of Cold-Electron Bolometer Optical Response at 350 GHz

Publication Year: 2014, Article Sequence Number: 2400105
Cited by:  Papers (3)
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Cold-electron bolometers (CEBs) integrated with twin-slot antennas have been designed and fabricated. Optical response was measured at bath temperatures of 0.06 to 3 K using blackbody radiation source at temperatures of 3 to 15 K. The responsivity of 0.3 * 109 V/W was measured at 2.7-K blackbody temperature that is close to the temperature of the cosmic microwave background. Optical mea... View full abstract»

• ### On the Electromagnetic Design of a $\beta_{g}=0.61$ 650-MHz Superconducting Radio Frequency Cavity

Publication Year: 2014, Article Sequence Number: 3500216
Cited by:  Papers (1)
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We present calculations for an electromagnetic design of a βg = 0.61 multicell superconducting radio frequency cavity for the Indian Spallation Neutron Source project. The geometry parameters of the midcells are optimized using a step-by-step 1-D optimization technique. This is followed by the optimization of end cells, which is done to achieve the required field flatness and to ... View full abstract»

• ### Study of HTS Magnetic Coupler Using Analytical and Numerical Computations

Publication Year: 2014, Article Sequence Number: 3600912
Cited by:  Papers (2)
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In this paper, we propose a method to calculate the magnetic field in flux concentration superconducting magnetic coupling (FCSMC) with rectangular permanent magnets (PMs). The inner rotor is composed of rectangular PMs, and the external rotor is made of high-temperature superconducting coils supplied by dc current. First, an exact 2-D analytical computation is developed in polar coordinates for c... View full abstract»

• ### Mechanical Characterizations of Structural Materials for Large Superconducting Magnets at Low Temperatures

Publication Year: 2014, Article Sequence Number: 4302308
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In the past decades, China was involved in several large superconducting magnet tasks. These magnets require cryogenic structural materials as reinforcement. Within this context, mechanical characterization of these materials at cryogenic temperature obtained with specimens from readily available components is a prerequisite for a safe engineering design. In China, almost all cryogenic mechanical ... View full abstract»

• ### Using Fuel Cell as a Power Supply for Superconducting Coil

Publication Year: 2014, Article Sequence Number: 4701906
Cited by:  Papers (2)
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Fuel cells are electrochemical energy converters that allow the transformation of the chemical energy of a fuel to electricity through oxido-reduction reaction. The voltage of an elementary cell is usually near 1 V in open circuit and around 0.6 V in nominal conditions of power generation. Fuel cells are then, in essence, low-voltage sources, so that for most practical applications, power manageme... View full abstract»

• ### Development of a Prototype Hybrid DC Circuit Breaker for Superconducting Magnets Quench Protection

Publication Year: 2014, Article Sequence Number: 4702006
Cited by:  Papers (4)
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A quench protection system for superconducting magnets mainly involves a mechanical dc circuit breaker (CB) and a dump resistor where the entire energy of the inductive magnet is dumped during quench. During the current commutation to the dump resistor, these mechanical CB experiences arcing at their contacts, which causes degradation in the performance as well as life expectancy of the CB, affect... View full abstract»

• ### Algorithm for the Fast Calculation of Magnetic Fields Generated by Arc-Shaped Conductors With Rectangular Cross Section

Publication Year: 2014, Article Sequence Number: 4901605
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This paper presents a novel procedure for the fast numerical integration of the magnetic field produced by arc-shaped conductors, which are characterized by a rectangular cross section. Available procedures are based on the analytical integration of Biot-Savart's law, but most of them exploit the analytical integration along one coordinate and then perform a 2-D numerical integration. In the propo... View full abstract»

• ### Electrical Design Study of 10-MW Salient-Pole Wind Turbine HTS Synchronous Generators

Publication Year: 2014, Article Sequence Number: 5202706
Cited by:  Papers (21)
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A conceptual structure of a 10-MW salient-pole wind turbine generator with race-track-shaped high-temperature superconductor (HTS) field coils is proposed, and a novel electrical design method for the salient-pole wind turbine HTS synchronous generators (WTHGs) is developed. In addition, the novel electrical design method derivation is introduced in detail according to the design process. In addit... View full abstract»

• ### Hybrid HTS-FCL Configuration With Adaptive Voltage Compensation Capability

Publication Year: 2014, Article Sequence Number: 5602208
Cited by:  Papers (5)
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This paper introduces a new hybrid high-temperature superconducting (HTS) fault current limiter (FCL) for improving the transient response system recovery with minimum utilization of HTS material. The hybrid HTS-FCL comprises a reduced size of HTS material connected in series with multistep braking resistors. The presented hybrid HTS-FCL utilizes the fast quench phenomena of HTS materials to ensur... View full abstract»

• ### A Process for Developing Long-Length Superconducting Joint Tube Assembly of Bi-2223 (10 wt% Ag)

Publication Year: 2014, Article Sequence Number: 6400307
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A process for developing long-length joint tube assembly of Bi-2223 (10 wt% Ag) superconductor is presented. The process involves sintering of tubes fabricated from cold isostatic pressing of the partially preformed Bi-2223 (10 wt% Ag) superconducting powder. The joint was made between these sintered tubes. For making joints, sintered tubes were physically joined by connecting together on a common... View full abstract»

• ### Lap Joint Characteristics of the YBCO Coated Conductors Under Axial Tension

Publication Year: 2014, Article Sequence Number: 6600805
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In this paper, we present a solder method for the lap joint of the YBa2Cu3O7-x coated conductor (YBCO CC) without removing the metallic stabilizer. Several solder joints with the same overlap of 80 mm were manufactured. In the case of self-field and at liquid nitrogen temperature, the resistances of solder joints are equal to about 10 nΩ. In addition, the re... View full abstract»

• ### Optimization of the $\hbox{BaSnO}_{3}$ Doping Content in $\hbox{GdBa}_{2}\hbox{Cu}_{3}\hbox{O}_{7-\delta}$ Coated Conductors by Pulsed Laser Deposition

Publication Year: 2014, Article Sequence Number: 6600908
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We tried to optimize the BaSnO3 (BSO) doping content in GdBa2Cu3O7-δ (GdBCO) coated conductors (CCs) on CeO2-buffered ion-beam assisted deposition (IBAD)-MgO templates. The BSO-doped GdBCO CCs with various x vol% ( x=0, 2, 3, 4, 5, and 6) relative to GdBCO were prepared at 800°C with the oxygen pressure of 300 mtorr by pulsed las... View full abstract»

• ### AC Loss and Coupling Currents in YBCO Coated Conductors With Varying Number of Filaments

Publication Year: 2014, Article Sequence Number: 6601008
Cited by:  Papers (6)
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Striation of high-temperature superconductor coated conductors as a way to reduce their magnetization ac losses has been the subject of intense worldwide research in the past years by several groups. While the principle of this approach is well understood, its practical application on commercial materials to be used in power applications is still far to be implemented due to manufacturing and tech... View full abstract»

• ### Properties of $\hbox{MgB}_{2}$ Ultrathin Films Fabricated on MgO (111) Substrate by Hybrid Physical–Chemical Vapor Deposition

Publication Year: 2014, Article Sequence Number: 7500205
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We fabricate MgB2 ultrathin films via the hybrid physical-chemical vapor deposition (HPCVD) technique. With the proper background pressure and B2H6 flow rate, we fabricate a series of ultrathin films ranging from 10 to 40 nm. These films grow on the MgO (111) substrate and are all c-axis epitaxial. The ultrathin films show good connectivity, very high Tc... View full abstract»

• ### Self-Consistent Modeling of the $I_{c}$ of HTS Devices: How Accurate do Models Really Need to Be?

Publication Year: 2014, Article Sequence Number: 8000508
Cited by:  Papers (25)
| | PDF (1148 KB) | HTML

Numerical models for computing the effective critical current of devices made of high-temperature superconducting tapes require the knowledge of the Jc(B,θ) dependence, i.e., of the way the critical current density Jc depends on the magnetic flux density B and its orientation θ with respect to the tape. In this paper, we present a numerical model based on the cr... View full abstract»

## 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
Britton L. T. Plourde
Syracuse University
bplourde@syr.edu
http://asfaculty.syr.edu/pages/phy/plourde-britton.html