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Investigations on NbTi superconducting racetrack coils under pulsed-current excitations
/ Abusaif, F (KIT, Karlsruhe) ; Bernhard, A (KIT, Karlsruhe) ; Bründermann, E (KIT, Karlsruhe) ; Gancarcik, D (KIT, Karlsruhe ; CERN) ; Glamann, N (KIT, Karlsruhe) ; Grau, A (KIT, Karlsruhe) ; Saez de Jauregui, D (KIT, Karlsruhe) ; Müller, A-S (KIT, Karlsruhe)
One of the key issues in the technology of superconductors is the protection against quenches. When designing a superconductor as a magnet, a coil or even current leads, the design should be made such that the superconductor withstands all operational conditions as fast discharges, pulsed loads or even rapid transient background fields.Computational modeling of pulsed-current characterization in a self-field NbTi racetrack sample coil has been performed using the finite element modelling software Opera as a step towards understanding the thermal and electromagnetic processes during a quench. [...]
2024 - 7 p.
- Published in : J. Phys. : Conf. Ser.: 2687 (2024) , no. 8, pp. 082015
- Published in : JACoW IPAC: 2023 (2023) , pp. WEPM070
Fulltext: PublicationJACoW - PDF; PublicationIOP - PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.082015
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Energy deposition simulations for a damage experiment with superconducting sample coils
/ Abusaif, F (KIT, Karlsruhe) ; Bernhard, A (KIT, Karlsruhe) ; Gancarcik, D (CERN ; KIT, Karlsruhe) ; Glamann, N (KIT, Karlsruhe) ; Gnacadja, E (U. Brussels (main)) ; Grau, A (KIT, Karlsruhe) ; Hernalsteens, C (CERN) ; Jauregui, D (KIT, Karlsruhe) ; Müller, A S (KIT, Karlsruhe) ; Pauwels, L (U. Brussels (main)) et al.
An experiment to study damage caused by the impact of 440 GeV/c protons on sample superconducting racetrack coils made from NbTi and Nb3Sn strands was recently carried out at CERN's HiRadMat facility. This paper reports on the detailed Monte Carlo simulations performed with FLUKA and Geant4 to evaluate the energy deposition of the 440 GeV/c proton beam on the sample coils positioned in the experimental setup. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) WEPM058
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.WEPM058
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Damage experiment with superconducting sample coils - experimental setup and observations during beam impact
/ Gancarcik, D (CERN ; KIT, Karlsruhe) ; Abusaif, F (KIT, Karlsruhe) ; Bordini, B (CERN) ; Bernhard, A (KIT, Karlsruhe) ; Bonura, M (Geneva U.) ; Favre, M (CERN) ; Glamann, N (KIT, Karlsruhe) ; Grau, A (KIT, Karlsruhe) ; Hernalsteens, C (CERN) ; de Jauregui, D Saez (KIT, Karlsruhe) et al.
The damage mechanisms and limits of superconducting accelerator magnets caused by the impact of high-intensity particle beams have been the subject of extensive studies at CERN in the recent years. Recently, an experiment with dedicated racetrack coils made of Nb-Ti and Nb$_3$Sn strands was performed in CERN’s HiRadMat facility. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) WEPM059
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.WEPM059
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Status and Powering Test Results of HTS Undulator Coils at 77 K for Compact FEL Designs
/ Richter, Sebastian (CERN ; KIT, Karlsruhe, EKP) ; Ballarino, Amalia (CERN) ; Bernhard, Axel (KIT, Karlsruhe, EKP) ; Müller, Anke-Susanne (KIT, Karlsruhe, EKP) ; Nes, Thomas (CERN) ; Schoerling, Daniel (CERN)
The production of low emittance positron beams for future linear and circular lepton colliders, like CLIC or FCC-ee, requires high-field damping wigglers. Just as compact free-electron lasers (FELs) require high-field but as well short-period undulators to emit high energetic, coherent photons. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 2726-2729
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2726-2729
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A Simplified Approach to Simulate Quench Development in a Superconducting Magnet
/ Janitschke, Marvin (CERN ; Berlin, Tech. U.) ; Mentink, Matthias (CERN) ; Murgia, Federica (CERN ; U. Bologna (main)) ; Pracht, Dimitri (CERN ; QUEST, Hannover) ; Ravaioli, Emmanuele (CERN) ; Verweij, Arjan P (CERN)
Cross-sectional 2D models often represent a computationally efficient alternative to full 3D models, when simulating complex multi-physical magnet systems. However, especially for the case of self-protected, superconducting magnets, where the stored energy has to be dissipated within the magnet coils, the thermal diffusion and the quench development in all three dimensions become key aspects. [...]
2021 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 31 (2021) 4000905
Fulltext: PDF;
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Impact of 440 GeV Proton beams on Superconductors in a Cryogenic Environment
/ Will, A (CERN ; KIT, Karlsruhe, IPE) ; Bernhard, A (KIT, Karlsruhe, IPE) ; Bonura, M (Geneva U.) ; Bordini, B (CERN) ; Mentink, M (CERN) ; Mueller, A S (KIT, Karlsruhe, IPE) ; Oslandsbotn, A (CERN) ; Schmidt, R (CERN) ; Schubert, J (CERN) ; Senatore, C (CERN ; Geneva U.) et al.
The superconducting magnets used in high energy particle accelerators such as CERN’s LHC can be impacted by the circulating beam in case of specific failures. This leads to interaction of the beam particles with the magnet components, like the superconducting coils, through direct beam impact or via secondary particle showers. [...]
IOP, 2020 - 10 p.
- Published in : J. Phys.: Conf. Ser. 1559 (2020) 012060
Published fulltext: PDF;
In : 14th European Conference on Applied Superconductivity, Glasgow, United Kingdom, 1 - 5 Sep 2019, pp.012060
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Design of Nb$_{3}$Sn Wiggler Magnets for the Compact Linear Collider and Manufacturing of a Five-Coil Prototype
/ Fajardo, L García (CERN) ; Antoniou, F (CERN) ; Bernhard, A (KIT, Karlsruhe) ; Ferracin, P (CERN) ; Mazet, J (CERN) ; Papadopoulou, S (CERN) ; Papaphilippou, Y (CERN) ; Pérez, J C (CERN) ; Schoerling, D (CERN)
To achieve the luminosity requirements of the Compact Linear Collider (CLIC) at the collision point, damping rings (DRs) equipped with superconducting wiggler magnets should be used to produce ultralow emittance with high bunch charge. Although Nb-Ti wigglers meet the specifications for CLIC DRs, the more challenging Nb$_{3}$Sn technology could be used to increase the magnetic flux density amplitude in the gap and reduce the total length of wigglers in the DRs. [...]
2016 - 6 p.
- Published in : IEEE Trans. Appl. Supercond. 26 (2016) 4100506
In : 24th International Conference on Magnet Technology, Seoul, Korea, 18 - 23 Oct 2015, pp.4100506
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