# IEEE Transactions on Applied Superconductivity

## Volume 25 Issue 3  Part 2 • June 2015

This issue contains several parts.Go to:  Part 1  | Part 3

## Filter Results

Displaying Results 1 - 25 of 325
• ### [Front cover]

Publication Year: 2015, Article Sequence Number: 0001601
| PDF (41 KB)
• ### IEEE Transactions on Applied Superconductivity publication information

Publication Year: 2015, Article Sequence Number: 0001701
| PDF (132 KB)

Publication Year: 2015, Article Sequence Number: 0001814
| PDF (206 KB)
• ### IEEE Transactions on Applied Superconductivity subject categories for article numbering

Publication Year: 2015, Article Sequence Number: 0001901
| PDF (95 KB)
• ### IEEE Transactions on Applied Superconductivity information for authors

Publication Year: 2015, Article Sequence Number: 0002001
| PDF (30 KB)
• ### Enhancement in Quality Factor of SRF Niobium Cavities by Material Diffusion

Publication Year: 2015, Article Sequence Number: 3500104
Cited by:  Papers (2)
| | PDF (473 KB) | HTML

We report the increase in the quality factor of superconducting radiofrequency cavities when small concentrations of nonmagnetic impurities such as titanium and nitrogen are thermally diffused into the inner surface. Several cavities made from ingot niobium with residual resistivity ratio (RRR) ~ 100-300 and a fine-grain reactor grade cavity with RRR <; 100 were thermally doped with titanium an... View full abstract»

• ### First Results of the SRF Wafer Test Cavity for the Characterization of Superconductors

Publication Year: 2015, Article Sequence Number: 3500204
| | PDF (818 KB) | HTML

The wafer test cavity was designed as a short sample test system that could create a reproducible environment for the testing of superconducting materials above the Bardeen-Cooper- Schrieffer limit of niobium. The results of the sapphire test cavity showed that the dielectric was too lossy, and thus, the original design had to be altered to make operation feasible with current hardware and achieve... View full abstract»

• ### Magnetic Shield Material Characterization for the Facility for Rare Isotope Beams' Cryomodules

Publication Year: 2015, Article Sequence Number: 3500305
| | PDF (435 KB) | HTML

The saturation fields of cylindrical cryogenic magnetic shields, for quarter-wave resonator cavities, of diameters ranging from 229 to 447 mm were measured at 300 and 10 K. A 0.86 T normal conducting solenoid and a 2.5 T superconducting solenoid were used at 300 and 10 K, respectively. The shielding of the high magnetic field region of the cavity, due to fringe fields entering the shield through t... View full abstract»

• ### A Simple GHz Resonator for Superconducting Materials Characterization

Publication Year: 2015, Article Sequence Number: 3500404
Cited by:  Papers (1)
| | PDF (541 KB) | HTML

This work examines the design and operation of a longitudinal resonant cavity, paired with monopole send and reciprocal patch receive antennae, that couples radio-frequency energy to a superconducting thin film carrying high current densities (~105 A/cm2). The dielectric substrate supporting the film penetrates the waveguide, which operates in an evanescent mode below the des... View full abstract»

• ### A Solid Nitrogen Cooled Linear Levitating System Based on $hbox{MgB}_{2}$ Bulks

Publication Year: 2015, Article Sequence Number: 3600205
Cited by:  Papers (1)
| | PDF (796 KB) | HTML

An innovative linear levitating system based on MgB2 bulks produced by the reactive liquid infiltration method is designed and built. Details of the system are presented. The levitation performance is also evaluated by means of previous experimental data. The linear levitating system consists of four MgB2 arc-shaped tiles lodged inside a double-shell Dewar sliding on a guide ... View full abstract»

• ### Technical Progress in HTS Magnetic Bulk Application Development

Publication Year: 2015, Article Sequence Number: 3600304
Cited by:  Papers (2)
| | PDF (635 KB) | HTML

Experimental studies and theoretical modeling of high temperature superconductor (HTS) magnetic bulk applications are conducted and reported. The magnetic force density as a function of the magnet superconductor separation in the mirror image FEM 2D picture shows a strong dependency on the distance and PM mass. The behavior contrasts all attempts of generating high magnetic levitation forces with ... View full abstract»

• ### Superconducting Magnetic Bearing as Twist Element in Textile Machines

Publication Year: 2015, Article Sequence Number: 3600504
Cited by:  Papers (12)
| | PDF (504 KB) | HTML

Superconducting magnetic bearings (SMBs) enable the levitation of a magnet in a stable position over a cooled superconductor without the need for an additional positioning system. These passive bearings are being investigated for applications wherever a stationary levitation or a contact-free rotary or linear motion is desired and cannot be realized by simpler means. Ring spinning is the most wide... View full abstract»

• ### Analysis of Levitation Characteristics of a Radial-Type High-Temperature Superconducting Bearing Based on Numerical Simulation

Publication Year: 2015, Article Sequence Number: 3600605
Cited by:  Papers (3)
| | PDF (692 KB) | HTML

A two-dimensional (2D) axisymmetric finite-element model was proposed to simulate the levitation characteristics of a radial-type high-temperature superconducting (HTS) bearing. The E-J power law together with an H-formulation was used to consider the superconducting state. The numerical model was successfully implemented using a FORTRAN program. A comparison of the experimental results with the s... View full abstract»

• ### Position Dependence of Restoring Torque in Low Frequency Superconducting Suspension

Publication Year: 2015, Article Sequence Number: 3600705
Cited by:  Papers (1)
| | PDF (588 KB) | HTML

As a traditional aspect, levitation loss is often studied in the rotating superconducting suspension. On the other hand, restoring torque behavior is also an important feature for the low frequency suspension, which can be used to describe the deflection of the spinning levitation to the micro thrust or disturbance, and be utilized in the design of a fully suspending measuring setup for electric p... View full abstract»

• ### Increase of Levitation Force due to Soft Ferromagnetic Plate and Bar in Magnetic Levitation System Using GdBCO Bulk

Publication Year: 2015, Article Sequence Number: 3600805
Cited by:  Papers (1)
| | PDF (644 KB) | HTML

We have studied a magnetic levitation system using a magnetic shielding effect of a high-temperature superconducting (HTS) bulk. The basic system is composed of a soft ferromagnetic bar, the HTS bulk, and a permanent magnet. To increase levitation force, we proposed two kinds of modified systems. One is that two basic systems are placed side by side. We name this the “2-set model.” T... View full abstract»

• ### The Levitation Characteristics of the Noncontact Rotating System Using HTS Bulks Trapped by Permanent Magnets

Publication Year: 2015, Article Sequence Number: 3600904
| | PDF (975 KB) | HTML

We have studied a noncontact magnetic levitation system using the ring-shaped high-temperature superconducting (HTS) bulks and ring-shaped permanent magnets (PMs). Because HTS bulks were magnetized by PMs fixed between the HTS bulks, these PMs levitated with strong restoring force. We used the stator coil to rotate the iron shaft that was combined with PMs. In order to rotate the shaft stable, a r... View full abstract»

• ### A Full Scale Superconducting Magnetic Levitation (MagLev) Vehicle Operational Line

Publication Year: 2015, Article Sequence Number: 3601005
Cited by:  Papers (22)
| | PDF (1259 KB) | HTML

This paper describes the construction and main components of a full-scale superconducting magnetic levitation vehicle. The prototype, comprising four 1.5-m-long wagons, will travel a short test line of 200 meters, connecting two buildings inside the campus of the Federal University of Rio de Janeiro. The efforts to implement this technology started thirteen years ago with a small-scale prototype i... View full abstract»

• ### Study on the Dynamic Stability of 3-D Superconducting Actuator by Various Typed HTS Bulk Movers

Publication Year: 2015, Article Sequence Number: 3601104
Cited by:  Papers (2)
| | PDF (1239 KB) | HTML

High-temperature superconductor (HTS) material can trap high magnetic fields due to its strong flux pinning force. Herein, based on our belief that such a device would be useful as a transporter in clean rooms where silicon wafers are manufactured, we report on the development of a three-dimensional (3-D) superconducting actuator using HTS bulk material in a noncontact transportation device that w... View full abstract»

• ### Experimental Analysis on Initial Current Decay Characteristics of Persistent-Mode HTS Coil by External Alternating Magnetic Field

Publication Year: 2015, Article Sequence Number: 3601204
Cited by:  Papers (6)
| | PDF (757 KB) | HTML

This paper deals with the current decay characteristics of a high-Tc superconducting (HTS) coil operated in persistent current mode (PCM) under alternating magnetic field. In superconducting synchronous machine applications, such as linear synchronous motor (LSM), the superconducting coils are designed to operate in PCM to obtain steady-magnetic field with DC transport current. This sup... View full abstract»

• ### Effect of Temperature on Rotation Loss in a Superconducting Device for Microthrust Measurement of Electric Propulsion System

Publication Year: 2015, Article Sequence Number: 3601304
| | PDF (639 KB) | HTML

Accurate measurement for long-term accumulating momentum of electrical propulsion (EP) requires the microthrust stand with high performance. A microthrust-measuring device using high-temperature superconductor magnetic levitation (HTSML) is designed to remove connecting interferences for better evaluation of EP thrusters. Levitating rotation loss is the main factor that affects measuring accuracy ... View full abstract»

• ### Design and Performance Evaluation of a Multi-Purpose HTS DC Induction Heating Machine for Industrial Applications

Publication Year: 2015, Article Sequence Number: 3700105
Cited by:  Papers (3)
| | PDF (1361 KB) | HTML

In general, conventional induction heating system is designed only for a specific metal billet or object, because the heating system should be specialized to guarantee the best performance regarding heating quality and efficiency. It has been applied to large heating systems in metallic processing industries. A DC induction heating method using HTS magnets can be one of the better counterplans for... View full abstract»

• ### Purification of Chemical Mechanical Polishing Wastewater via Superconducting High Gradient Magnetic Separation System With Optimal Coagulation Process

Publication Year: 2015, Article Sequence Number: 3700205
| | PDF (971 KB) | HTML

This study examined the purification of wastewater from the chemical mechanical polishing (CMP) process via a superconducting high gradient magnetic separation (HGMS) system. To remove silica, the main contaminant in CMP wastewater, the optimal coagulation process of silica-magnetite-ferric hydroxide aggregates was empirically determined. Filtration tests via superconducting HGMS system with optim... View full abstract»

• ### Development of an Eddy-Current Separation Equipment With High Gradient Superconducting Magnet

Publication Year: 2015, Article Sequence Number: 3700304
| | PDF (730 KB) | HTML

A high gradient magnetic separator (HGMS) used for recovery of waste electric and electronic equipment has been designed and fabricated in the Institute of High Energy Physics of China. It has a warm bore of 200 mm diameter and consists of two superconducting solenoid coils made of epoxy-impregnated NbTi/Cu superconductors. The designed center field is 5 T, and the field gradient more than 36 T/m.... View full abstract»

• ### Separation of Steel Slag From Landfill Waste for the Purpose of Decontamination Using a Superconducting Magnetic Separation System

Publication Year: 2015, Article Sequence Number: 3700404
Cited by:  Papers (3)
| | PDF (800 KB) | HTML

Superconducting magnetic separation has been applied on a soil remediation. Huge amount of steel slag has been dumped into a landfill site and mixed with covering soil. The soil-steel slag mixture is hazardous material and needs to be treated because steel slag has heavy metals, which can be leached out. Two types of soil sample from the landfill site, i.e., plain soil and soil sample after the so... View full abstract»

• ### Study on Volume Reduction of Contaminated Soil by Radioactive Cesium Using Magnetic Separation

Publication Year: 2015, Article Sequence Number: 3700505
Cited by:  Papers (1)
| | PDF (506 KB) | HTML

This study intends to develop a new volume reduction method of the soil that is contaminated by radioactive cesium. The volume reduction process by the magnetic separation method is described as follows. First, the soil constituent particles with different particle sizes such as gravel, sand and clay are separated by classification. In this method, the clay, which mainly adsorbs cesium, is separat... 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