2,688 resources related to Superconducting cables
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Bi-Annual IEEE PES T&D conference. Largest T&D conference in North America.
Topics cover a complete survey of the field of charged particle accelerator science and technology and infrastructure.
International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD 2018) will be held from April 15 to 18, 2018 in Tianjin, sponsored by IEEE Beijing Section. ASEMD2018 continues the focus on the applied superconductivity and electromagnetic devices. It provides a forum for both university and industry academic researchers and experts in the relevant fields to discuss and share ideas, present results, reflect on past experiences and discuss future developments. The scope of the conference includes principally the following topics:Strong Current and Large Scale Applied SuperconductivitySuperconducting ElectronicsSuperconducting MaterialsElectromagnetic MaterialsElectromagnetic DevicesElectric Power DevicesElectrical MachinesEnergy Efficiency DevicesPower Electronic Devices and CircuitsMechatronicsControl and Measurement Computing and Informatics
ICMMT2018 is intended to provide a broad international forum and nice opportunity for the scientists and engineers to present their new ideas and exchange information on research.
PowerTech is the anchor conference of the IEEE Power & Energy Society in Europe. It is intended to provide a forum for electric power engineering scientists and engineers to share ideas, results of their scientific work, to learn from each other as well as to establish new friendships and maintain existing ones.
Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission
The magazine covers theory, analysis, design (computer-aided design), and practical implementation of circuits, and the application of circuit theoretic techniques to systems and to signal processing. Content is written for the spectrum of activities from basic scientific theory to industrial applications.
Science and technology related to the basic physics and engineering of magnetism, magnetic materials, applied magnetics, magnetic devices, and magnetic data storage. The Transactions publishes scholarly articles of archival value as well as tutorial expositions and critical reviews of classical subjects and topics of current interest.
All aspects of the theory and applications of nuclear science and engineering, including instrumentation for the detection and measurement of ionizing radiation; particle accelerators and their controls; nuclear medicine and its application; effects of radiation on materials, components, and systems; reactor instrumentation and controls; and measurement of radiation in space.
Plasma science and engineering, including: magnetofluid dynamics and thermionics; plasma dynamics; gaseous electronics and arc technology; controlled thermonuclear fusion; electron, ion, and plasma sources; space plasmas; high-current relativistic electron beams; laser-plasma interactions; diagnostics; plasma chemistry and colloidal and solid-state plasmas.
IEEE Power Engineering Review, 1982
IEEE Transactions on Nuclear Science, 1971
IEEE Transactions on Applied Superconductivity, 2000
A one meter long Nb/sub 3/Sn dipole model with 11 T nominal magnetic field in a 43.5 mm bore is being developed at Fermilab in collaboration with LBNL and KEK as part of the R&D efforts for a future Very Large Hadron Collider. This paper describes the magnet design and fabrication procedure as well as summarizes the results of magnetic, ...
1968 8th Electrical Insulation Conference, 1968
This paper will describe two methods of significantly improving the reliable insulating ability of concentric-gap gas-filled systems. The first of these makes use of a thin dielectric coating bonded on one or both concentric conductors. The second utilizes the field of the concentric line to remove free conducting particles electrostatically from the system. This work was done using dc voltages ...
Conference Record of the 1991 IEEE Particle Accelerator Conference, 1991
The electrostatic deflector in the Chalk River superconducting cyclotron has a dee shape, and has a single fixed deflector electrode suspended from two insulators located above the midplane. One of them contains a high-voltage cable and a series water resistor to limit energy available to a spark and to isolate the high-voltage cable and DC power supply from RF pickup. ...
MIRAI Program and the New Super-high Field NMR Initiative in Japan - Applied Superconductivity Conference 2018
Microstructure-Property Correlations in Superconducting Wires - Applied Superconductivity Conference 2018
Future Circular Colliders, CERN, Geneva, Switzerland
Advances in MgB2 - ASC-2014 Plenary series - 7 of 13 - Wednesday 2014/8/13
Applications of Superconductivity in the Detection of Axions - Applied Superconductivity Conference 2018
Superconducting quantum computing research in Japan - Applied Superconductivity Conference 2018
ASC-2014 SQUIDs 50th Anniversary: 1 of 6 Arnold Silver
Low-energy High-performance Computing based on Superconducting Technology
Superconducting Detectors for Astrophysics and Cosmology - ASC-2014 Plenary series - 9 of 13 - Thursday 2014/8/14
Niobium Manufacturing for Superconductivity - ASC-2014 Plenary series - 5 of 13 - Tuesday 2014/8/12
Super conducting Magnets at Fermilab Tevatron
Superconducting Quantum Computing in China - Applied Superconductivity Conference 2018
Interaction of ferromagnetic and superconducting permanent magnets - superconducting levitation
The Josephson Effect: The Original SQUIDs
Laser Communication From Space Using Superconducting Detectors - ASC-2014 Plenary series - 12 of 13 - Friday 2014/8/15
The Josephson Effect: SQUIDs Then and Now: From SLUGS to Axions
The Prospects for Scalable Quantum Computing with Superconducting Circuits - Applied Superconductivity Conference 2018
Quantum Annealing: Current Status and Future Directions - Applied Superconductivity Conference 2018
How to Build a Superconducting Opto-Electronic Neuromorphic Computer - Sonia Buckley - ICRC 2018
A one meter long Nb/sub 3/Sn dipole model with 11 T nominal magnetic field in a 43.5 mm bore is being developed at Fermilab in collaboration with LBNL and KEK as part of the R&D efforts for a future Very Large Hadron Collider. This paper describes the magnet design and fabrication procedure as well as summarizes the results of magnetic, mechanical and quench protection analyses. The main parameters of superconducting strand and cable are also reported.
This paper will describe two methods of significantly improving the reliable insulating ability of concentric-gap gas-filled systems. The first of these makes use of a thin dielectric coating bonded on one or both concentric conductors. The second utilizes the field of the concentric line to remove free conducting particles electrostatically from the system. This work was done using dc voltages with both polarities applied. These studies can predict the ac performance as well since the formation time of a gas discharge is less than a microsecond and is thereby short compared to the 8 millisecond 60 Hz half period. On the least favorable polarity in 13 atmospheres of SFe, 1100 kV was insulated whereas with nitrogen at 20 atmospheres 850 kV was insulated. The paper closes with a discussion of the operating parameters of ac compressed-gas-insulated cables in the 138 kV to 1000 kV range. These indicate that the power rating of compressed-gas-insulated cables can exceed that of overhead transmission lines at the same voltage. Critical lengths greater than 100 miles and lower loss as a percentage of power transmitted are also obtained. These results are due to the unity dielectric constant, low dielectric loss, and good convective heat transfer properties of compressed gas.
The electrostatic deflector in the Chalk River superconducting cyclotron has a dee shape, and has a single fixed deflector electrode suspended from two insulators located above the midplane. One of them contains a high-voltage cable and a series water resistor to limit energy available to a spark and to isolate the high-voltage cable and DC power supply from RF pickup. The other insulator is a conventional cylindrical post. The insulators have been changed from the original design to make them less prone to thermal damage from RF heating. Details are given of the water system electrical performance and of insulator modifications and performance.<<ETX>>
Experience with strand and cable manufacturing are presented together with mechanical and electrical data. A comparison of the critical currents of the cables with the sum of the critical currents of the 24 individual strands before cabling shows that with the usual definition the cables have practically no degradation. Finally, it is shown how different cable compactions and an additional calibration run through the cabling machine influence the critical current.<<ETX>>
Recent experimental tests on the model coils have shown that the behavior of Nb3Sn based cables is not as good as expected on the basis of the characteristics evaluated for the uncabled strands. This degradation of the cable performance seems to be due to various factors, among which the strain state of the filaments due to bending and contact phenomena inside the cable. After these results it was decided that high performance strands will be used for ITER magnets, even if they have never been tested on a full size cable. Therefore the capability of evaluating the coil performance from the strands characteristics becomes a crucial point in the Research and Development (R&D) activity. Recently some extrapolations were attempted, but the mechanical model used is rather simplified and needs some fitting parameters which are not known a priori. In this work we present a thermo-mechanical model suitably developed to evaluate the strain state of a Nb3Sn strand inside a superconducting (SC) cable. It is based on the idea of multiscale modeling, starting from a enriched formulation of the beam kinematics to take into account the fibrous nature of a multifilamentary strand. The method consists in performing a successive substitution of discrete models involving many beams with a single equivalent beam model, which behavior is identified from the preceding cabling stage. This recursive substitution allows to perform the analysis within a reasonable computational time. Once the stress and strain fields are obtained at the higher level, a suitable unsmearing technique gives the strain till the first level, on the scale of the SC filament. The method is applied to the real case of the 3 times 3 and 3 times 3 times 5 CICC sub- size samples tested at FZK in Germany.
This paper presents experimental results of tests on new techniques of constructing superconducting cables; those fabricated from braided elemental and high field alloying superconductors. Braided superconducting cables are feasible for small size, packaged delay lines. Tests were facilitated by the use of. a tunnel diode pulse generator operating at 4.2°K. Cables fabricated with a braided niobium outer conductor and a solid niobium inner conductor, lengths of 200 feet to 1500 feet, show an output 10%-90% risetime of less than 3 ns at 4.2°K. When compared to the same length of RG-213U a marked improvement is observed. Similar cables constructed of a solid Nb-25%Zr inner conductor, lengths of 263 feet and 900 feet, exhibit an output 10%-90% risetime of 0.65 ns. These results indicated that the risetime was not a function of length as is the case in ordinary cables.
The design of a class of short period superconducting undulators is presented. We begin with a parameter-based analysis that provides insight into potential device performance as a function of the properties of superconducting materials. We present data on candidate low-temperature superconducting materials and the motivation to consider low-copper fraction, high Jc materials. Measured data on recent Nb/sub 3/Sn conductors is provided, together with wire and cable design issues that are tailored for undulator applications. Key design concerns are then addressed, in particular the quench protection system limitations and the system performance. Progress on the construction and testing of a prototype 30 mm period device is described.
RRL (ramp-rate limitation) is a phenomenon in which a magnet quenches before it reaches its apparent critical current. This paper is an experimental investigation not about the detailed influence of various parameters on the ramp-rate limitation, but about the general methodology to overcome it. A CICC (cable-in-conduit conductor) superconducting magnet has been made of three- strand NbTi triplet. The magnet produced a maximum 3.6 T/s ramp-rate at the inner most region. The temperature of the supercritical helium coolant was deliberately raised to investigate RRL-related quench. The main purpose of the experiment was to study RRL phenomena at the first and consecutive ramp-ups. If quench is avoided during the first ramp-up, the consecutive ramp-ups of the magnet have much higher resistance against the RRL. This paper describes several experimental observations of several interesting hysteretic characteristics of RRL.
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