Quench behavior of high-temperature superconductor (RE)Ba2Cu3O x CORC cable

Wang, Yawei; Zheng, Jinxing; Zhu, Zixuan; Zhang, Min; Yuan, Weijia

doi:10.1088/1361-6463/ab1e2c

Cited by 72 publications

(31 citation statements)

References 61 publications

(81 reference statements)

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“…The perovskite structure is a huge crystal structure group that includes several subclasses of space groups, including cubic, orthorhombic, tetragonal, rhombohedral, monoclinic, and triclinic crystals. The diversity in the stoichiometry and structures allows these materials to exhibit a variety of unique properties for many applications, such as high-temperature superconductors, [1][2][3][4][5][6][7][8][9][10][11] multiferroic materials, [12] magnetoresistors, [13][14][15][16] magnetocalorics, and topological insulators. [17] Recently, halide perovskites received great attention in various areas, such as light emitting diodes, solar cells, water splitting, and laser cooling.…”

Section: Introductionmentioning

confidence: 99%

Machine Learning Lattice Constants for Cubic Perovskite Compounds

Zhang

Xu²

2020

ChemistrySelect

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Cubic perovskites have attracted great attention in the past decade due to unique and tunable optical, mechanical, and electrical properties, which are promising candidates for various applications such as solar cells, light emitting diodes, actuators, and laser cooling devices. The lattice constant, a, as the only variable parameter among the six parameters in the crystal structure, has a significant impact on the structural stability, bandgap structure, and thus materials performance. In this study, we develop the Gaussian process regression (GPR) model to shed light on the statistical relationship between ionic radii and lattice constants for cubic perovskite ABX3 compounds. A total of 135 samples with lattice constants ranging from 3.680 Å to 6.330 Å are explored. The model has a high degree of accuracy and stability that contributes to fast and robust lattice constant estimations.

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Section: Introductionmentioning

confidence: 99%

Machine Learning Lattice Constants for Cubic Perovskite Compounds

Zhang

Xu²

2020

ChemistrySelect

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“…Based on experimental and simulation results, the peak electromagnetic torque was not obvious for small diameter aluminum billets (<200 mm). The world's first commercial MW-class superconducting DC induction heater was proposed and developed by China in 2019 [4]- [7], [9], [13], [19]- [21], [24], [36]- [46]. It has been designed for aluminum billets with diameters of 200-446 mm and lengths of 80-1500 mm.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Peak Electromagnetic Torque Characteristics for Superconducting DC Induction Heaters

Yang

Dai

et al. 2020

IEEE Access

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The efficiency of novel superconducting direct current (DC) induction heaters can be up to 80-90%. This is much higher than the 40-50% of conventional alternating current induction heaters. Induction heaters are used to preheat aluminum billets in extrusion pressing. Such devices use a driving motor to rotate the billet. A peak in the electromagnetic torque appears at low rotation speeds (of the motor). Therefore, this peak electromagnetic torque is of particular interest when designing the driving system, which is one of the main challenges for megawatt-class superconducting DC induction heaters. In this paper, the peak electromagnetic torque characteristics of different sized billets were analyzed. A numerical 3D finite element method model was built to analyze the peak electromagnetic torque and resistive heating power behavior of aluminum billets. The results obtained from simulations and experiments match well. The effect of the following five relative parameters, on electromagnetic torque and resistive heating power, were studied: billet diameter, billet length, magnetic flux density, billet material, and electrical conductivity. The peak electromagnetic torque increases nonlinearly with increasing billet diameter, up to 640 mm. The time elapsed between the peak to stable torque decreases nonlinearly with increasing magnetic flux density. The effects of billet material (copper, titanium alloy and stainless steel) on torque were analyzed and compared. These results are likely to guide more cost-effective and practical designs for the billet driving system of superconducting DC induction heaters. INDEX TERMS Superconducting DC induction heater, peak electromagnetic torque, aluminum billet, magnetic flux density.

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“…One question is how the heating and temperature develop in a multi-tape REBCO conductor [147][148][149]. Would the current sharing between tapes in a multi-tape architecture reduce the peak temperature compared to a single tape [150,151]?…”

Section: How Do Rebco Accelerator Magnets Transit From Superconductinmentioning

confidence: 99%

Dipole Magnets above 20 Tesla: Research Needs for a Path via High-Temperature Superconducting REBCO Conductors

2019

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To enable the physics research that continues to deepen our understanding of the Universe, future circular colliders will require a critical and unique instrument—magnets that can generate a dipole field of 20 T and above. However, today’s maturing magnet technology for low-temperature superconductors (Nb-Ti and Nb 3 Sn) can lead to a maximum dipole field of around 16 T. High-temperature superconductors such as REBCO can, in principle, generate higher dipole fields but significant challenges exist for both conductor and magnet technology. To address these challenges, several critical research needs, including direct needs on instrumentation and measurements, are identified to push for the maximum dipole fields a REBCO accelerator magnet can generate. We discuss the research needs by reviewing the current results and outlining the perspectives for future technology development, followed by a brief update on the status of the technology development at Lawrence Berkeley National Laboratory. We present a roadmap for the next decade to develop 20 T-class REBCO accelerator magnets as an enabling instrument for future energy-frontier accelerator complex.

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Quench behavior of high-temperature superconductor (RE)Ba₂Cu₃O_x CORC cable

Cited by 72 publications

References 61 publications

Machine Learning Lattice Constants for Cubic Perovskite Compounds

Machine Learning Lattice Constants for Cubic Perovskite Compounds

Analysis of Peak Electromagnetic Torque Characteristics for Superconducting DC Induction Heaters

Dipole Magnets above 20 Tesla: Research Needs for a Path via High-Temperature Superconducting REBCO Conductors

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