Coherent-Phase Optical Time Domain Reflectometry for Monitoring High-Temperature Superconducting Magnet Systems [PDF]
SensorsHigh-temperature superconductor (HTS) magnet systems, especially those designed for fusion reactors, require effective and reliable monitoring to avoid damaging anomalies.
Matthew Leoschke +5 more
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Evidence that transverse variability of critical current density can greatly mitigate screening current stress in high field REBCO magnets [PDF]
Scientific ReportsPlastic damage of REBCO (REBa2Cu3O7-x, where RE=rare earth) coated conductors by screening current stress (SCS) is a significant concern for ultra-high-field superconducting magnets. Indeed, the third Little Big Coil (LBC3), a REBCO magnet that generated
Jeseok Bang +10 more
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Study of the neutron radiation hardness of MAPD-3NK2 silicon photomultipliers [PDF]
Scientific ReportsThe radiation hardness of MAPD-3NK2 photodiodes with deep-buried pixel structures was evaluated under neutron irradiation at fluences ranging from 3.6 × 109to 3.6 × 1012neq/cm².
F. Ahmadov +13 more
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The Effect of Different Copper Discs on the Discharge of Superconducting Coils
Crystals, 2022 High temperature superconducting (HTS) magnets often work at high energy density and have slow quench propagation speed, so a quench will present a serious risk to the safety of magnets.
Yajun Xia +6 more
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Research on Overall Design of Quench Protection System for CFETR
南方能源建设, 2022 [Introduction] The huge energy stored in the superconducting magnet in quench state is transferred and consumed by China Fusion Engineering Experimental Reactor (CFETR) quench protection system to prevent it from damage.
Qianglin XU +4 more
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Rapid melting and quenching with microsecond current pulses [PDF]
Materials Science and Engineering, 1988 We report the use of microsecond current pulses to transform layered crystalline Ni-Zr films to amorphous alloys. The starting materials were electron-beam- or sputter-deposited multilayers with a composition modulation wavelength of 34 nm, an average composition of Ni63Zr37 and a total thickness of 68Onm.
Clemens, Bruce M., Gilgenbach, Ronald M.
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Characterization of early current quench time during massive impurity injection in JT-60SA
Nuclear Fusion, 2023 Characteristics of the early current quench (CQ) time in mitigated disruptions are studied for a full-current (5.5 MA) scenario in the JT-60SA superconducting tokamak.
T. Yokoyama +9 more
doaj +1 more source
Energies, 2022 Fluctuations in the critical current along the length of high-temperature superconducting (HTS) tapes manufactured in the form of coated conductors is a common manufacturing phenomenon.
Alireza Sadeghi +3 more
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Breakdown of the Generalized Gibbs Ensemble for Current-Generating Quenches [PDF]
Physical Review Letters, 2014 We establish a relation between two hallmarks of integrable systems: the relaxation towards the generalized Gibbs ensemble (GGE) and the dissipationless charge transport. We show that the former one is possible only if the so called Mazur bound on the charge stiffness is saturated by local conserved quantities.
Mierzejewski, Marcin +2 more
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Quench properties of high current superconductors [PDF]
IEEE Transactions on Magnetics, 1981 A technique has been developed which allows the simultaneous determination of most of the important parameters of a high current superconductor. The critical current, propagation velocity, normal state resistivity, magnetoresistance, and enthalpy are determined as a function of current and applied field.
Garber, M, Sampson, W B
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