Benoît Vanderheyden
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View article: Impact of border defects on the magnetic flux penetration in superconducting films
Impact of border defects on the magnetic flux penetration in superconducting films Open
Defects in superconducting systems are ubiquitous and nearly unavoidable. They can vary in nature, geometry, and size, ranging from microscopic-size defects such as dislocations, grain boundaries, twin planes, and oxygen vacancies, to macr…
View article: Acceleration of Multi-Scale LTS Magnet Simulations with Neural Network Surrogate Models
Acceleration of Multi-Scale LTS Magnet Simulations with Neural Network Surrogate Models Open
While the prediction of AC losses during transients is critical for designing large-scale low-temperature superconducting (LTS) magnets, brute-force finite-element (FE) simulation of their detailed geometry down to the length scale of the …
View article: Impact of border defects on the magnetic flux penetration in superconducting films
Impact of border defects on the magnetic flux penetration in superconducting films Open
Defects in superconducting systems are ubiquitous and nearly unavoidable. They can vary in nature, geometry, and size, ranging from microscopic-size defects such as dislocations, grain boundaries, twin planes, and oxygen vacancies, to macr…
View article: Magnetic Field Conforming Formulations for Foil Windings
Magnetic Field Conforming Formulations for Foil Windings Open
We extend the foil winding homogenization method to magnetic field conforming formulations. We first propose a full magnetic field foil winding formulation by analogy with magnetic flux density conforming formulations. We then introduce th…
View article: Magnetic Shielding in a Planar Geometry: Using Ferromagnetic Washers to Screen In-Plane Fields
Magnetic Shielding in a Planar Geometry: Using Ferromagnetic Washers to Screen In-Plane Fields Open
peer reviewed
View article: AC Loss Computation in Large-Scale Low-Temperature Superconducting Magnets: Multi-Scale and Semi-Analytical Procedures
AC Loss Computation in Large-Scale Low-Temperature Superconducting Magnets: Multi-Scale and Semi-Analytical Procedures Open
In this paper, we introduce two complementary approaches for the accurate prediction of AC losses in large-scale low-temperature superconducting (LTS) magnets. These methods account for the temperature rise within the LTS coil and its impa…
View article: Enhancing the magnetic field gradient between two superconductors with rotational motion under a background DC field
Enhancing the magnetic field gradient between two superconductors with rotational motion under a background DC field Open
The ability of bulk high-temperature superconductors to trap magnetic flux densities up to one order of magnitude larger than the saturation magnetization of conventional ferromagnetic materials offers the prospect of generating large magn…
View article: Helicoidal Transformation Method for Finite Element Models of Twisted Superconductors
Helicoidal Transformation Method for Finite Element Models of Twisted Superconductors Open
This article deals with the modeling of superconducting and resistive wires with a helicoidal symmetry, subjected to an external field and a transport current. Helicoidal structures are 3-D, and therefore yield computationally intensive si…
View article: Electrothermal modeling of HTS coils using homogenization and different formulations
Electrothermal modeling of HTS coils using homogenization and different formulations Open
International audience
View article: Finite Element Models for Magnetic Shields Made of Stacked Superconducting Tape Annuli
Finite Element Models for Magnetic Shields Made of Stacked Superconducting Tape Annuli Open
Stacks of high-temperature superconducting tape annuli can be used as magnetic shields operating efficiently for both axial and transverse fields. However, due to their layered geometry and hybrid electrical and magnetic properties, implem…
View article: Magneto-Thermal Thin Shell Approximation for 3D Finite Element Analysis of No-Insulation Coils
Magneto-Thermal Thin Shell Approximation for 3D Finite Element Analysis of No-Insulation Coils Open
For finite element (FE) analysis of no-insulation (NI) high-temperature superconducting (HTS) pancake coils, the high aspect ratio of the turn-to-turn contact layer (T2TCL) leads to meshing difficulties which result in either poor quality …
View article: Helicoidal Transformation Method for Finite Element Models of Twisted Superconductors
Helicoidal Transformation Method for Finite Element Models of Twisted Superconductors Open
This paper deals with the modelling of superconducting and resistive wires with a helicoidal symmetry, subjected to an external field and a transport current. Helicoidal structures are three-dimensional, and therefore yield computationally…
View article: Magneto-Thermal Thin Shell Approximation for 3D Finite Element Analysis of No-Insulation Coils
Magneto-Thermal Thin Shell Approximation for 3D Finite Element Analysis of No-Insulation Coils Open
For finite element (FE) analysis of no-insulation (NI) high-temperature superconducting (HTS) pancake coils, the high aspect ratio of the turn-to-turn contact layer (T2TCL) leads to meshing difficulties which result in either poor quality …
View article: Finite Element Models for Magnetic Shields Made of Stacked Superconducting Tape Annuli
Finite Element Models for Magnetic Shields Made of Stacked Superconducting Tape Annuli Open
Stacks of high-temperature superconducting tape annuli can be used as magnetic shields operating efficiently for both axial and transverse fields. However, due to their layered geometry and hybrid electrical and magnetic properties, implem…
View article: How to overcome the demagnetization of superconducting Halbach arrays?
How to overcome the demagnetization of superconducting Halbach arrays? Open
Assembling trapped-field superconducting magnets with mutually orthogonal magnetizations directions in a Halbach array configuration offers the prospect of generating both high fields and large field gradients. A major issue when assemblin…
View article: Magnetic shielding up to 0.67 T at 77 K using a stack of high temperature superconducting tape annuli of 26 mm bore
Magnetic shielding up to 0.67 T at 77 K using a stack of high temperature superconducting tape annuli of 26 mm bore Open
In this work we demonstrate the magnetic shielding ability of a stack of YBa 2 Cu 3 O 7 tape annuli. The annuli are cut from a 46 mm wide second generation coated conductor deposited on a Ni-5at.%W alloy ferromagnetic (FM) substrate. The i…
View article: Measurement of Magnetic Hysteresis Loops of the Ni-5at.%W Alloy Substrate as a Function of Temperature in a Stack of 2G HTS-Coated Conductor Annuli
Measurement of Magnetic Hysteresis Loops of the Ni-5at.%W Alloy Substrate as a Function of Temperature in a Stack of 2G HTS-Coated Conductor Annuli Open
peer reviewed
View article: Annuli of coated conductors with a ferromagnetic substrate: magnetic shielding properties at 77 K and at room temperature
Annuli of coated conductors with a ferromagnetic substrate: magnetic shielding properties at 77 K and at room temperature Open
International audience
View article: 3D Modelling of the Currents Induced in a Superconducting Linear Halbach array
3D Modelling of the Currents Induced in a Superconducting Linear Halbach array Open
International audience
View article: Trapped magnetic field distribution above a superconducting linear Halbach array
Trapped magnetic field distribution above a superconducting linear Halbach array Open
In applications requiring a large magnetic force, permanent magnets with non-parallel magnetization directions can be assembled in a Halbach array to generate a large gradient of magnetic flux density. The saturation magnetization of perma…
View article: What Formulation Should One Choose for Modeling a 3-D HTS Motor Pole With Ferromagnetic Materials?
What Formulation Should One Choose for Modeling a 3-D HTS Motor Pole With Ferromagnetic Materials? Open
We discuss the relevance of several finite-element formulations for nonlinear\nsystems containing high-temperature superconductors (HTS) and ferromagnetic\nmaterials (FM), in the context of a 3D motor pole model. The formulations are\neval…
View article: What Formulation Should One Choose for Modeling a 3D HTS Magnet Motor Pole with a Ferromagnetic Material?
What Formulation Should One Choose for Modeling a 3D HTS Magnet Motor Pole with a Ferromagnetic Material? Open
International audience
View article: 3D Finite Element Models of Stacked Tapes Magnetic Shields
3D Finite Element Models of Stacked Tapes Magnetic Shields Open
peer reviewed
View article: On the Stability of Mixed Finite-Element Formulations for High-Temperature Superconductors
On the Stability of Mixed Finite-Element Formulations for High-Temperature Superconductors Open
In this work, we present and analyze the numerical stability of two coupled finite element formulations. The first one is the h-a-formulation and is well suited for modeling systems with superconductors and ferromagnetic materials. The sec…
View article: Design of a superconducting magnetic shield closed on both ends for a high-sensitivity particle detector
Design of a superconducting magnetic shield closed on both ends for a high-sensitivity particle detector Open
International audience
View article: Stability of H-A and T-A Finite Element Formulations
Stability of H-A and T-A Finite Element Formulations Open
International audience
View article: Numerical investigation of critical states in superposed superconducting films
Numerical investigation of critical states in superposed superconducting films Open
International audience
View article: Metamorphosis of discontinuity lines and rectification of magnetic flux avalanches in the presence of noncentrosymmetric pinning forces
Metamorphosis of discontinuity lines and rectification of magnetic flux avalanches in the presence of noncentrosymmetric pinning forces Open
peer reviewed
View article: Selective triggering of magnetic flux avalanches by an edge indentation
Selective triggering of magnetic flux avalanches by an edge indentation Open
We numerically investigate the effect of an edge indentation on the threshold field of thermomagnetic instabilities in superconducting films subjected to a ramping magnetic field, applied perpendicular to the plane of the film. In particul…
View article: Numerical investigation of critical states in superposed superconducting films
Numerical investigation of critical states in superposed superconducting films Open
peer reviewed