45.5-tesla direct-current magnetic field generated with a high-temperature superconducting magnet

Hahn, Seungyong; Kim, Kwang-min; Kim, Kwangmin; Hu, Xinbo; Painter, T.A.; Dixon, I.R.; Kim, Seokho; Bhattarai, Kabindra R.; Noguchi, So; Jaroszyński, J.; Larbalestier, D. C.

doi:10.1038/s41586-019-1293-1

Cited by 483 publications

(274 citation statements)

References 30 publications

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“…H-formulation, namely, is the mathematical model with the dependent variable of the magnetic field intensity H, which was first applied to the study of superconductivity in 2003 [21]. H-formulation generally consists of Maxwell Ampere's Law (1), Faraday's Law (2), Constitutive Law (3), Ohm's Law (4) and E-J power Law (5):…”

Section: Basics Of H-formulationmentioning

confidence: 99%

“…In recent years, the electromagnetic performance of HTS has enhanced, while the price of HTS has been gradually decreasing [3]. All these advantages make HTS technically and economically possible for future superconducting power applications, such as HTS high-field magnets [4], HTS motors/generators [5,6], HTS transformers [7,8], HTS power transmission cables [9], HTS fault current limiters [10].…”

Section: Introductionmentioning

confidence: 99%

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Review of the AC loss computation for HTS using H formulation

Shen

Grilli

Coombs

2020

Supercond. Sci. Technol.

188

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This paper overviews the computation of the alternating current (AC) loss in high temperature superconductors (HTS) based on the finite-element method (FEM) using H-Formulation. A great amount of studies shows that the AC loss calculation results from H-Formulation agree well with the experiment results. As one of the most reliable numerical modeling methods, H-Formulation is able to calculate the AC loss from a wide range of HTS topologies. In this paper, we review these contributions on the AC loss calculation using H-Formulation, from small-scale HTS tapes and coils, HTS cables, to large-scale HTS applications.

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Section: Basics Of H-formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Review of the AC loss computation for HTS using H formulation

Shen

Grilli

Coombs

2020

Supercond. Sci. Technol.

188

View full text Add to dashboard Cite

show abstract

“…Second, pre-existing cracks in the REBCO layer from the tape-slit process can induce further degradation under the large hoop tension due to Lorentz load [18,143]. For solenoid insert coils wound with single tapes, one may avoid this issue by properly orienting the slit edge with respect to the background solenoid fields [18]. For magnets based on multi-tape REBCO conductors featuring more complex conductor and magnetic field orientations, more fundamental solutions are needed to eliminate the crack formation during the tape fabrication process.…”

Section: What Is the Long-term Performance Of Rebco Magnets Under Lormentioning

confidence: 99%

“…Measurements based on the scanning Hall probe can give valuable insight on the spatial distribution of the critical current density that can help explain the source of the observed critical-current fluctuation [198][199][200][201]. In particular, the Hall probe measurements effectively reveal the damage pattern and identify the causes of conductor damage that occurred in the REBCO pancake coils achieving the record 45.5 T dc field [18]. A similar method has been successfully applied to individual strands of Roebel cables, identifying the sources of I c reduction [202].…”

Section: How To Determine the Performance Of A Long Multi-tape Rebco mentioning

confidence: 99%

“…Although the anticipated utility applications have not yet been realized, high-field magnet applications have been rising as an important customer for the REBCO market [12][13][14]. An early and strong ongoing direction is the solenoid magnet applications based on single REBCO tapes that lead to a series of record dc magnetic fields with the most recent one reaching 45.5 T [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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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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Modulation of the Cell Membrane Potential and Intracellular Protein Transport by High Magnetic Fields

Zablotskii

Polyakova

Dejneka

2020

Bioelectromagnetics

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To explore cellular responses to high magnetic fields (HMF), we present a model of the interactions of cells with a homogeneous HMF that accounts for the magnetic force exerted on paramagnetic/ diamagnetic species. There are various chemical species inside a living cell, many of which may have large concentration gradients. Thus, when an HMF is applied to a cell, the concentrationgradient magnetic forces act on paramagnetic or diamagnetic species and can either assist or oppose large particle movement through the cytoplasm. We demonstrate possibilities for changing the machinery in living cells with HMFs and predict two new mechanisms for modulating cellular functions with HMFs via (i) changes in the membrane potential and (ii) magnetically assisted intracellular diffusiophoresis of large proteins. By deriving a generalized form for the Nernst equation, we find that an HMF can change the membrane potential of the cell and thus have a significant impact on the properties and biological functionality of cells. The elaborated model provides a universal framework encompassing current studies on controlling cell functions by high static magnetic fields.

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45.5-tesla direct-current magnetic field generated with a high-temperature superconducting magnet

Cited by 483 publications

References 30 publications

Review of the AC loss computation for HTS using H formulation

Review of the AC loss computation for HTS using H formulation

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

Modulation of the Cell Membrane Potential and Intracellular Protein Transport by High Magnetic Fields

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