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A system solution for a 100 kA class high temperature superconducting line for HL-LHC and for wider energy applications
/ Ballarino, Amalia (CERN) ; Bailey, Wendell (U. Southampton (main)) ; Barth, Christian (CERN) ; Cruikshank, Paul (CERN) ; Gahier, Vanessa (CERN) ; Leclercq, Yann (CERN) ; Pasdeloup, Florian (CERN) ; Willering, Gerard (CERN) ; Yang, Yifeng (U. Southampton (main))
The powering of the High Luminosity magnets of the Large Hadron Collider relies on Cold Powering Systems incorporating direct current superconducting lines, called Superconducting Links, based on magnesium diboride cables. A Cold Powering System interconnects the magnets in the accelerator existing tunnel to the power converters in newly excavated galleries that are about 8 m higher than the accelerator tunnel and up to about 100 m distant from the magnets. [...]
2025 - 15 p.
- Published in : Sci. Rep. 15 (2025) 20428
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Result of Powering and Field Measurements on the GaToroid Demonstrator
/ Bottura, L (CERN) ; Breschi, M (CERN) ; Haziot, A (Bologna U.) ; Lehtinen, T (CERN) ; Liebsch, M (CERN) ; Mangiarotti, F J (CERN) ; Pentella, M (CERN) ; Perez, J C (CERN) ; Petrone, C (CERN) ; Sedlak, K (Ecole Polytechnique, Lausanne) et al.
GaToroid is a novel idea of a steady-state, toroidal magnet that directs multiple charged particle beams for hadron or electron therapy without rotating parts or magnet ramping. GaToroid has the potential of conformal radiotherapy with a configuration that can be simpler and lighter than conventional rotating gantries, also offering FLASH capability well beyond what is presently possible. [...]
2025 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 35 (2025) 4400605
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Manufacturing and Testing of the First Nb3Sn Subscale Stress-Managed Common-Coils: 2-in-1 Dipole Magnet Developed at the Paul Scherrer Institute
/ Araujo, D (PSI, Villigen) ; Auchmann, B (PSI, Villigen ; CERN) ; Brem, A (PSI, Villigen) ; Michlmayr, T (PSI, Villigen) ; Müller, C (PSI, Villigen) ; Stampfli, A (CERN) ; Bonasia, A (CERN) ; Boutboul, T (CERN) ; Fleiter, J (CERN) ; Haziot, A (CERN) et al.
The magnet development (MagDev) laboratory at the Paul Scherrer Institute (PSI) has designed the subscale stress-managed common-coils (subSMCC1) 2-in-1 dipole magnet as part of the CHART (Swiss Accelerator Research and Technology) contribution to the CERN HFM (High-Field Magnet) programme. This R&D; vehicle is part of the CHART/MagDev high-field roadmap. [...]
2025 - 7 p.
- Published in : IEEE Trans. Appl. Supercond. 35 (2025) 4002807
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5.
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Measurement and Modeling of Initial Quench Development in Nb3Sn Accelerator Magnets
/ Keijzer, Ruben (Twente U., Enschede) ; Willering, Gerard (CERN) ; Rogacki, Piotr (CERN) ; Fiscarelli, Lucio (CERN) ; Russenschuck, Stephan (CERN) ; Dhallé, Marc (Twente U., Enschede) ; Kate, Herman Ten (Twente U., Enschede)
Accelerator magnets are equipped with voltage taps and, on the test bench, with so-called quench antenna's to monitor the transient effects occurring during a magnet quench. Proper identification and localization of a quench origin is vital for understanding performance issues in Nb3Sn accelerator magnets. [...]
2025 - 7 p.
- Published in : IEEE Trans. Appl. Supercond. 35 (2025) 4003007
In : Applied Superconductivity Conference (ASC 2024), Salt Lake City, Utah, United States, 1 - 6 Sep 2024, pp.4003007
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6.
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Complex Impedance of the LHC Main Dipole Magnet in the Presence of Artificial Short Circuits
/ Janitschke, M (CERN ; U. Rostock) ; Ravaioli, E (CERN) ; Verweij, A P (CERN) ; Willering, G (CERN) ; van Rienen, U (U. Rostock)
Interturn short circuits inside the coil-winding pack of superconducting magnets can lead to severe damage to the magnet during a quench or fast current ramps. Investigating their impact and finding ways to detect these nonconformities could save considerable run-time of an accelerator. [...]
2025 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 35 (2025) 4002905
Fulltext: PDF;
In : Applied Superconductivity Conference (ASC 2024), Salt Lake City, Utah, United States, 1 - 6 Sep 2024, pp.4002905
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7.
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Status of Production of Beam Separation Dipole Magnets for the High-Luminosity LHC Upgrade
/ Sugano, M (KEK, Tsukuba) ; Suzuki, K (KEK, Tsukuba) ; Nakamoto, T (KEK, Tsukuba) ; Ikemoto, Y (KEK, Tsukuba) ; Kawamata, H (KEK, Tsukuba) ; Ogitsu, T (KEK, Tsukuba) ; Okada, N (KEK, Tsukuba) ; Tanaka, K (KEK, Tsukuba) ; Takahashi, N (KEK, Tsukuba) ; Terashima, A (KEK, Tsukuba) et al.
Beam separation dipole magnets (D1 magnet, MBXF) will be installed on both sides of two interaction points (ATLAS and CMS) for the High-Luminosity Large Hadron Collider upgrade (HL-LHC). High Energy Accelerator Research Organization (KEK) is responsible for delivering one full-scale prototype and six series production cold masses to the HL-LHC project. [...]
2025 - 6 p.
- Published in : IEEE Trans. Appl. Supercond.
- Published in : IEEE Trans. Appl. Supercond.
In : Applied Superconductivity Conference (ASC 2024), Salt Lake City, Utah, United States, 1 - 6 Sep 2024, pp.4003806
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Quench Modeling of the GaToroid Demonstrator Magnet for Hadron Therapy
/ Soldati, Luca (Genoa U.) ; Breschi, Marco (Bologna U.) ; Haziot, Ariel (CERN) ; Willering, Gerard (CERN) ; Vernassa, Gianluca (CERN) ; Bottura, Luca (CERN)
In the design of superconducting magnets, ensuring thermal stability during operation is of paramount importance. This study aims to predict heat propagation and temperature distribution during a quench event in the Low Temperature Superconductor (LTS) demonstrator of the GaToroid coil. [...]
2025 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 35 (2025) 4702305
In : Applied Superconductivity Conference (ASC 2024), Salt Lake City, Utah, United States, 1 - 6 Sep 2024, pp.4702305
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High Field Magnet Programme -- European Strategy Input
/ Alfonso, L. (INFN, Parma) ; Ambrosio, G. (Fermilab) ; Araujo, D. (PSI, Villigen) ; Arpaia, P. (INFN, Parma) ; Auchmann, B. (PSI, Villigen ; CERN) ; Axensalva, J. (CERN) ; Balconi, L. (INFN, Milan ; Milan U. ; INFN, Parma) ; Ballarino, A. (CERN) ; Barzi, E. (Ohio State U. ; Unlisted) ; Baskys, A. (CERN) et al.
In this submission, we describe research goals, implementation, and timelines of the High Field Magnet Programme, hosted by CERN. [...]
FERMILAB-PUB-25-0283-TD ; arXiv:2504.16885.
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Fermilab Library Server - Fulltext - Fulltext
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Physics-driven lumped-element modelling for impedance simulations of superconducting accelerator magnets
/ Janitschke, M (CERN ; U. Rostock) ; Bednarek, M (CERN) ; Ravaioli, E (CERN) ; Verweij, A P (CERN) ; Willering, G (CERN) ; van Rienen, U (U. Rostock)
Superconducting magnets in particle accelerators are subject to various forces, radiation, high voltages, or thermal gradients. These can cause failures such as inter-turn shorts, which can be very challenging to detect after the magnets are installed in the accelerator. [...]
2024 - 22 p.
- Published in : Supercond. Sci. Technol. 38 (2025) 015013
Fulltext: PDF;
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