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CERN Accelerating science

CERN Document Server Znaleziono 23 rekordów  1 - 10następnykoniec  skocz do rekordu: Szukanie trwało 1.24 sekund. 
1.
MuCol Milestone Report No. 5: Preliminary Parameters / MuCoL Collaboration
This document is comprised of a collection of updated preliminary parameters for the key parts of the muon collider. [...]
arXiv:2411.02966.
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Fermilab Library Server - Fulltext - Fulltext
2.
Reduced Order Hysteretic Magnetization Model for Composite Superconductors / Dular, Julien (CERN) ; Verweij, Arjan (CERN) ; Wozniak, Mariusz (CERN)
In this paper, we propose the Reduced Order Hysteretic Magnetization (ROHM) model to describe the magnetization and instantaneous power loss of composite superconductors subject to time-varying magnetic fields. [...]
arXiv:2409.13653.
- 20.
Fulltext
3.
Helicoidal Transformation Method for Finite Element Models of Twisted Superconductors / Dular, Julien (CERN) ; Henrotte, François (Liege U.) ; Nicolet, André (Aix-Marseille U.) ; Wozniak, Mariusz (CERN) ; Vanderheyden, Benoît (Liege U.) ; Geuzaine, Christophe (Liege U.)
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 simulations in a Cartesian coordinate system. [...]
2024 - 15 p. - Published in : IEEE Trans. Appl. Supercond. 34 (2024) 8200615 Fulltext: PDF;
4.
Coupled Axial and Transverse Currents Method for Finite Element Modelling of Periodic Superconductors / Dular, Julien (CERN) ; Magnus, Fredrik (CERN ; Norwegian U. Sci. Tech.) ; Schnaubelt, Erik (CERN ; Darmstadt, Tech. Hochsch.) ; Verweij, Arjan (CERN) ; Wozniak, Mariusz (CERN)
In this paper, we propose the Coupled Axial and Transverse currents (I) (CATI) method, as an efficient and accurate finite element approach for modelling the electric and magnetic behavior of periodic composite superconducting conductors. The method consists of a pair of two-dimensional models coupled via circuit equations to account for the conductor geometrical periodicity. [...]
arXiv:2404.09775.- 2024-07-29 - 18 p. - Published in : Supercond. Sci. Technol. 37 (2024) 095002 Fulltext: 2404.09775 - PDF; document - PDF;
5.
Parallel-in-Time Integration of Transient Phenomena in No-Insulation Superconducting Coils Using Parareal / Schnaubelt, Erik (CERN ; Darmstadt, Tech. U.) ; Wozniak, Mariusz (CERN) ; Dular, Julien (CERN) ; Cortes Garcia, Idoia (Eindhoven, Tech. U.) ; Verweij, Arjan (CERN) ; Schöps, Sebastian (Darmstadt, Tech. U.)
High-temperature superconductors (HTS) have the potential to enable magnetic fields beyond the current limits of low-temperature superconductors in applications like accelerator magnets. [...]
arXiv:2404.13333.
- 9 p.
Fulltext
6.
An open-source 3D FE quench simulation tool for no-insulation HTS pancake coils / Atalay, Sina (CERN ; Bogazici U.) ; Schnaubelt, Erik (CERN ; Darmstadt, Tech. Hochsch.) ; Wozniak, Mariusz (CERN) ; Dular, Julien (CERN) ; Zachou, Georgia (CERN ; Natl. Tech. U., Athens) ; Schöps, Sebastian (Darmstadt, Tech. Hochsch.) ; Verweij, Arjan (CERN)
A new module, Pancake3D, of the open-source Finite Element Quench Simulator (FiQuS) has been developed in order to perform transient simulations of no-insulation (NI) high-temperature superconducting (HTS) pancake coils in 3-dimensions. FiQuS/Pancake3D can perform magnetodynamic or coupled magneto-thermal simulations. [...]
arXiv:2311.09177.- 2024-05-08 - 11 p. - Published in : Supercond. Sci. Technol. 37 (2024) 065005 Fulltext: Publication - PDF; 2311.09177 - PDF;
7.
Mortar Thin Shell Approximation for Analysis of Superconducting Accelerator Magnets / Hahn, Robert (Darmstadt, Tech. U.) ; Schnaubelt, Erik (Darmstadt, Tech. U. ; CERN) ; Wozniak, Mariusz (CERN) ; Geuzaine, Christophe (Liege U.) ; Schöps, Sebastian (Darmstadt, Tech. U.)
Thin layers can lead to unfavorable meshes in a finite element (FE) analysis. [...]
arXiv:2405.01076.
- 9.
Fulltext
8.
Quench Protection of Stacks of No-Insulation HTS Pancake Coils by Capacitor Discharge / Mulder, Tim (CERN) ; Wozniak, Mariusz (CERN) ; Verweij, Arjan (CERN)
No-Insulation (NI) technology for HTS coils has been around for a decade and is a proven method to protect small pancake coils in case of a quench. Without turn-to-turn insulation, excess current can bypass a sudden resistive part, thereby possibly preventing damaging the conductor locally. [...]
2024 - 6 p. - Published in : IEEE Trans. Appl. Supercond. 34 (2024) 4703906
9.
Efficient Reduced Magnetic Vector Potential Formulation for the Magnetic Field Simulation of Accelerator Magnets / D'Angelo, Laura A.M. (Darmstadt, Tech. U.) ; Moll, Dominik (Darmstadt, Tech. U.) ; Vitrano, Andrea (CERN) ; Marsic, Nicolas (Darmstadt, Tech. U.) ; Schnaubelt, Erik (Darmstadt, Tech. U. ; CERN) ; Wozniak, Mariusz (CERN) ; De Gersem, Herbert (Darmstadt, Tech. U.) ; Auchmann, Bernhard (PSI, Villigen)
The major advantage of reduced magnetic vector potential formulations (RMVPs) is that complicated coil structures do not need to be resolved by a computational mesh. Instead, they are modeled by thin wires, whose source field is included into the simulation model along Biot-Savart's law. [...]
arXiv:2309.02004.- 2024-03 - 8 p. - Published in : IEEE Trans. Magn. 60 (2024) 7000808 Fulltext: PDF;
10.
Interpretable Anomaly Detection in the LHC Main Dipole Circuits With Nonnegative Matrix Factorization / Obermair, Christoph (CERN ; Graz, Tech. U.) ; Apollonio, Andrea (CERN) ; Charifoulline, Zinour (CERN) ; Felsberger, Lukas (CERN) ; Janitschke, Marvin (CERN ; U. Rostock) ; Pernkopf, Franz (Graz, Tech. U.) ; Ravaioli, Emmanuele (CERN) ; Verweij, Arjan (CERN) ; Wollmann, Daniel (CERN) ; Wozniak, Mariusz (CERN)
CERN's Large Hadron Collider (LHC), with its eight superconducting main dipole circuits, has been in operation for over a decade. During this time, relevant operational parameters of the circuits, including circuit current, voltages across magnets and their coils, and current to ground, have been recorded. [...]
2024 - 12 p. - Published in : IEEE Trans. Appl. Supercond. 34 (2024) 4004112 Fulltext: PDF;

CERN Document Server : Znaleziono 23 rekordów   1 - 10następnykoniec  skocz do rekordu:
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