Results 271 to 280 of about 124,007 (302)

Current investigations at Quenching Research Centre (QRC)

2022
Quenching Research Centre has been established at the beginning of 2010 by the financial support for excellence of the Ministry of Science, Education and Sport, of the Republic of Croatia. The main investigation and research possibilities and potentials of the QRC are: cooling in liquids, salt bath and high pressure gases.
Liščić, Božidar, Filetin, Tomislav, Landek, Darko, Župan, Josip   +3 more
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Model of Quench Development Inside HTS Coils Including Quench-to-Critical Current Ratio Evaluation

IEEE Transactions on Applied Superconductivity, 2013
It is well known that the thermal quench current densities jq in high-temperature superconducting (HTS) coils can considerably differ from the “critical” short sample current densities jc(T, B) based on a definite voltage level, for instance 1 μV/cm. The ratio jq/jc (lift-factor) can be higher or lower than one depending on coil parameters. The reasons
V. E. Keilin, D. I. Shutova
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Filamental quenching of the current-driven ion-cyclotron instability

The Physics of Fluids, 1985
Experimental evidence is presented on the effect of the finite width of the current channel for the excitation of the current-driven ion-cyclotron instability. The results are in agreement with the nonlocal theory of Bakshi, Ganguli, and Palmadesso.
Steven L. Cartier, Nicola D’Angelo, Peter H. Krumm, Robert L. Merlino   +3 more
openaire   +1 more source

Study on the Quench Current of YBCO Thin Film FCL

IEEE Transactions on Applied Superconductivity, 2007
We present the result of a theoretical analysis on the quench current of YBCO thin films for the superconducting resistive fault current limiter. Generally, a transport current exceeds a critical current without quenching and the quench current is usually more than 1.5 times of the critical current.
Katsuyuki Kaiho, Hirofumi Yamasaki, Kazuaki Arai, Mitsuho Furuse, Taka-Aki Manabe, Mitsugu Sohma   +5 more
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Current matrix elements with quenched Wilson fermions

Nuclear Physics B - Proceedings Supplements, 1990
Abstract Using our renormalisation group improved Wilson fermion action in the quenched approximation and working on an 83 × 16 lattice with a lattice spacing of a ∼ 0.15fm, we determine: (a) the lattice renormalisations of the non-singlet axial and vector currents, (b) fx and fϱ and (c) the baryon octet axial vector couplings down to rather small ...
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Quenching behaviour of superconductors in an inductive fault current limiter

IEEE Transactions on Appiled Superconductivity, 2001
Earlier papers introduced a new form of inductive superconducting fault current limiter (FCL) in which the primary and secondary windings were interleaved symmetrically, producing current sharing in the multiplicity of secondary coils. A new FCL which employs similar structure but in a higher rating has been designed and constructed.
Y.C. Tan, P.D. Evans
openaire   +1 more source

Role of trigger to avoid current quenching in pseudospark switch

IEEE Transactions on Plasma Science, 2002
In this paper, experiments have been reported on finding a possible solution to the current quenching problem in the pseudospark switch (PSS). The charge injection trigger system has been used to investigate this aspect. Trigger current pulses with varying duration and varying charge content have been used for injection of charge from a single ...
H.K. Dwivedi, J. Urban, K. Frank
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Inductive Fault Current Limiters: Kinetics of Quenching and Recovery

IEEE Transactions on Applied Superconductivity, 2009
We report experimental results from a shielded inductive type superconducting fault current limiter (SFCL) demonstrator incorporating YBCO coated conductor together with results from an analytic study of a large 13 MVA SFCL. Important parameters such as the superconductor temperature rise, re-cooling time and voltage characteristics following a short ...
A. Usoskin, F. Mumford, R. Dietrich, A. Handaze, B. Prause, A. Rutt, K. Schlenga   +6 more
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Current Redistribution in an SSC Strand during a Quench

1996
Current redistribution in SSC strands due to current diffusion is calculated during a quench. Current redistribution occurs on the order of tens of microseconds. The copper core and sheath geometry and resistivity significantly affect the current redistribution. Heating in excess of steady state occurs while the current redistributes.
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Quench transient current and quench propagation limit in pancake wound REBCO coils as a function of contact resistance, critical current, and coil size

Superconductor Science and Technology, 2019
Abstract It is a general belief that no insulation (NI) coil technology is a path to very high field superconducting coils. Recent experience has shown that there are aspects of NI coil design that, if not addressed, can possibly lead to coil failures. One potential problem area is the large transient currents that are associated with
W Denis Markiewicz, Thomas Painter, Iain Dixon, Mark Bird   +3 more
openaire   +1 more source