IEEE Transactions on Applied Superconductivity

Filter Results

Displaying Results 1 - 14 of 14

Publication Year: 2007, Page(s): C1
| PDF (37 KB)
• IEEE Transactions on Applied Superconductivity publication information

Publication Year: 2007, Page(s): C2
| PDF (36 KB)
• Quench Protection System for the Superconducting Coil of the KSTAR Tokamak

Publication Year: 2007, Page(s):1 - 6
Cited by:  Papers (12)
| | PDF (659 KB) | HTML

This paper presents two-stage high-power mechanical-thyristor switches developed as 40-kA direct current (dc) circuit breakers for the superconducting coil energy dump system of Korea superconducting Tokamak advanced research (KSTAR). An advanced switching system used in the quench protection should allow multishot mode of operation without maintenance and long lifetime with arcless dc current com... View full abstract»

• Investigation of ITER Use Internal-Sn ${\rm Nb}_{3}{\rm Sn}$ Superconducting Wire Through Irreversibility Temperature Measurement

Publication Year: 2007, Page(s):7 - 12
Cited by:  Papers (7)
| | PDF (1126 KB) | HTML

By means of a SQUID magnetometer, the irreversibility temperatures and magnetization transitions of an ITER-type internal-Sn Nb3Sn superconducting wire were measured during warming and cooling cycles at a fixed magnetic field. The results obtained show that the irreversibility temperature T*(H) is strongly dependent on A15 phase composition and can be used to optimize the hea... View full abstract»

• Effect of Additional Reference Current in a Reference Junction-Double Relaxation Oscillation SQUID (RJ-DROS)

Publication Year: 2007, Page(s):13 - 19
Cited by:  Papers (2)  |  Patents (1)
| | PDF (707 KB) | HTML

A double relaxation oscillation SQUID with a reference junction (RJ-DROS) already has a fixed reference current, so that it holds a fixed flux-to-voltage characteristics when fabricated. When an additional current flows through the reference junction but not through the signal junction in the RJ-DROS, we have obtained the variation of its characteristics. The additional reference current has an ef... View full abstract»

• Demagnetization of Trapped Field in High$T_{C}$Superconductors Using Pulsed Field Methods

Publication Year: 2007, Page(s):20 - 26
Cited by:  Papers (1)
| | PDF (979 KB) | HTML

This paper examines the demagnetization of a trapped magnetic field in a high TCsuperconducting (HTS) monolith using a single, short, high-amplitude field pulse. With a single optimized pulse, the peak trapped field can be reduced to one-third of the maximum saturated value. Alternatively, the spatial average of the trapped field could be fixed very close to zero. After demagnetization,... View full abstract»

• Design and Testing of a Superconducting Rotating Machine

Publication Year: 2007, Page(s):27 - 33
Cited by:  Papers (27)
| | PDF (1778 KB) | HTML

We have designed, constructed and tested an eight-pole superconducting rotating machine, based on an unconventional topology that could potentially lead to a significant increase in power density. Calculations have been carried out in two steps: estimation of the magnetic scalar potential from a Coulomb formulation using the Markov chain Monte Carlo (MCMC) method, and the calculation of the flux d... View full abstract»

• Synchrotron Tomography for the Study of Void Formation in Internal Tin ${\hbox {Nb}}_{3}{\hbox {Sn}}$ Superconductors

Publication Year: 2007, Page(s):34 - 39
Cited by:  Papers (4)
| | PDF (599 KB) | HTML

Synchrotron absorption tomography has been applied for the study of voids formed during the thermal treatment of internal tin Nb3 Sn strands. Possible void formation mechanisms and in particular the effect of Sn phase transformations and melting are discussed based on a quantitative void description. Sn melting changes mainly the shape and volume of the individual voids but does not inc... View full abstract»

• Fabrication of ${\rm YBa}_{2}{\rm Cu}_{3}{\rm O}_{7-{\rm x}}$ Superconducting Films Using Low-Fluorine-Content Solution

Publication Year: 2007, Page(s):40 - 43
Cited by:  Papers (14)
| | PDF (1171 KB) | HTML

A new solution for fabrication of YBa2Cu3O 7-x (YBCO) superconducting films has been developed of Ba-TFA with nonfluorine Y and Cu organic salts being used as precursors. This new solution contains only 30% of the fluorine in an all-TFA solution, and duration of heat-treatment cycles is much shorter than that when an all-TFA solution is used. New YBCO-films are cha... View full abstract»

• Some Considerations About the Cooling of the Rotor of a Superconducting Motor

Publication Year: 2007, Page(s):44 - 51
Cited by:  Papers (4)
| | PDF (731 KB) | HTML

This paper deals with the cooling of the rotor of a superconducting motor. We consider three cooling systems: a cold insert, circulation of a cool gas and boiling of a cool liquid. For each case, we study the use of three different gases: hydrogen, helium, neon, and two liquids: hydrogen and neon. For each case of cooling, we define the best gases in term of cooling efficiency View full abstract»

• Magnetic Field Coils for Gradiometer Balancing

Publication Year: 2007, Page(s):52 - 59
| | PDF (283 KB) | HTML

We present a design of a compact set of biplanar coils which produces magnetic fields of eight different profiles for the purpose of gradiometer balancing. The magnetic field profiles correspond to uniform magnetic fields in three orthogonal directions and five linearly independent first-order gradients. The coils are made by etching square printed circuit boards that have dimensions of 0.5 m time... View full abstract»

• Order form for reprints

Publication Year: 2007, Page(s): 60
| PDF (345 KB)
• IEEE Transactions on Applied Superconductivity upcoming special conference issues

Publication Year: 2007, Page(s): C3
| PDF (24 KB)
• IEEE Transactions on Applied Superconductivity Information for authors

Publication Year: 2007, Page(s): C4
| PDF (28 KB)

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