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1.
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Advanced Composite Insulation Systems in Nb$_{3}$Sn Superconducting Magnets for Accelerators: Electrical Characterization of Laminates at Cryogenic Temperatures
/ Osuna, J (CERN) ; Piccin, R (CERN) ; Pincot, F O (CERN) ; Polvani, D (CERN ; Bologna U.) ; Scheuerlein, C (CERN)
The electrical insulation system in wind-and-react Nb3Sn superconducting magnets must be robust, such that it can sustain the mechanical stresses, high radiation doses, and thermal cycles involved in the operation of the magnets. The chosen cable insulation material, currently a thin layer of braided S2 Glass, must also withstand a high-temperature heat treatment in an inert atmosphere, required to develop the superconducting phase in the cable. [...]
2025 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng.: 1327 (2025) , no. 1, pp. 012210
Fulltext: PDF;
In : 29th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2024, Geneva, Switzerland, 22 - 26 July 2024, pp.012210
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2.
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3.
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Construction and Analysis of a Modified Nb3Sn 11 T Short Dipole Model
/ Cabrera, Carmen Abad (CERN) ; Perini, Diego (CERN) ; Bampton, Tavis Alexander (CERN) ; Bahmane, Oussama Id (CERN) ; Izquierdo Bermudez, Susana (CERN) ; Bourcey, Nicolas (CERN) ; Devred, Arnaud (CERN) ; Vez, Ruth Diaz (CERN) ; Garion, Cedric (CERN) ; Guinchard, Michael (CERN) et al.
The 5.2-m-long, 11 T double-aperture Nb3Sn Dipole
Magnet was designed to replace some of the standard, 15-m-long
8.3 T Nb–Ti main dipole magnets in the Large Hadron Collider.
After the production and test of several of 2-m-long models, the
test of full-length 11 T series magnets revealed signs of performance
degradation in the coil ends after a sequence of electromagnetic and
thermal cycles. The possible sources for performance degradation
were categorized into two groups: issues internal to the coils and
issues with the coil support structure, in particular in the magnet
ends. [...]
2025 - 7 p.
- Published in : IEEE Trans. Appl. Supercond. 35 (2025) 1-7
Fulltext: PDF;
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4.
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Curved-Canted-Cosine-Theta (CCCT) Dipole Prototype Development at CERN
/ Haziot, Ariel (CERN) ; Kirby, Glyn (CERN) ; Dallocchio, Alessandro (CERN) ; Devred, Arnaud (CERN) ; Foussat, Arnaud (CERN) ; Gentini, Luca (CERN) ; Mangiarotti, Franco J (CERN) ; Pentella, Mariano (CERN) ; Petrone, Carlo (CERN) ; Pincot, Francois-Olivier (CERN) et al.
Due to its flexibility in generating advanced field harmonic corrections and potential for low cost compared to traditional designs, the Canted Cosine Theta (CCT) configuration is particularly interesting for compact particle accelerators and gantries for medical applications. This article presents the design of a curved demonstrator named Fusillo, a Canted Cosine Theta Nb-Ti dipole magnet that is being developed at CERN, featuring a large aperture of 236 mm, a small bending radius of 1 m, a bending angle of 90$^{\circ }$, and multi-harmonic field correction, with a 3.61 T conductor peak field. [...]
2024 - 8 p.
- Published in : IEEE Trans. Appl. Supercond. 34 (2024) 4002608
Fulltext: PDF;
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5.
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Fabrication and Test of the Fourth Prototype of the D2 Orbit Corrector Dipole for HL-LHC
/ Ilardi, Veronica (CERN) ; Felice, Hélène (CERN ; IRFU, Saclay, DACM) ; Feuvrier, Jerome (CERN) ; Fiscarelli, Lucio (CERN) ; Foussat, Arnaud P (CERN) ; Kirby, Glyn (CERN) ; Kosowski, Filip (CERN) ; Mangiarotti, Franco J (CERN) ; Pincot, Francois-Olivier (CERN) ; Rogacki, Piotr T (CERN) et al.
As part of the High-Luminosity upgrade project (HL-LHC) for the Large Hadron Collider (LHC) at CERN, new double-aperture beam orbit corrector magnets will be installed near the recombination dipole (D2). These magnets are 2.2 m long Nb–Ti dipoles based on the Canted Cosine-Theta (CCT) design. [...]
2024 - 6 p.
- Published in : IEEE Trans. Appl. Supercond. 34 (2024) 4002006
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6.
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Effective Time Constants at 4.2 to 70 K in ReBCO Pancake Coils With Different Inter-Turn Resistances
/ Nes, T H (Twente U., Enschede ; CERN) ; Rijk, G De (CERN) ; Kirby, G (CERN) ; Pincot, F O (CERN) ; Liberadzka-Porret, J (CERN) ; Petrone, C (CERN) ; Richter, S C (CERN) ; van Nugteren, J (CERN) ; Kario, A (Twente U., Enschede) ; Ten Kate, H H J (Twente U., Enschede)
For future
Re
BCO tape based accelerator magnets it is proposed to use no- or partial inter-turn insulation to deal with quench detection and protection. In a non-insulated coil the turns are separated by a finite electrical resistance, providing a bypass for the current at hot-spots, improving thermal stability and quench detection time. [...]
2022 - 6 p.
- Published in : IEEE Trans. Appl. Supercond. 32 (2022) 4600806
In : 15th European Conference on Applied Superconductivity (EUCAS 2021), Online, 5 - 9 Sep 2021, pp.4600806
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7.
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High-temperature superconducting screens for magnetic field-error cancellation in accelerator magnets
/ Bortot, L. (CERN ; Darmstadt, Tech. U.) ; Mentink, M. (CERN) ; Petrone, C. (CERN) ; Van Nugteren, J. (CERN) ; Deferne, G. (CERN) ; Koettig, T. (CERN) ; Kirby, G. (CERN) ; Pentella, M. (CERN ; Turin Polytechnic) ; Perez, J.C. (CERN) ; Pincot, F.O. (CERN) et al.
Accelerators magnets must have minimal magnetic field imperfections for reducing particle-beam instabilities. In the case of coils made of high-temperature superconducting (HTS) tapes, the field imperfections from persistent currents need to be carefully evaluated. [...]
arXiv:2103.14354.-
2021-08-26 - 11 p.
- Published in : Supercond. Sci. Technol. 34 (2021) 105001
Fulltext: PDF;
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8.
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Test of the First Full-Length Prototype of the HL-LHC D2 Orbit Corrector Based on Canted Cosine Theta Technology
/ Mangiarotti, Franco J (CERN) ; Duda, Michal (Cracow, INP ; CERN) ; Fiscarelli, Lucio (CERN) ; Kirby, Glyn (CERN) ; Bajko, Marta (CERN) ; Coll, Dominic (Unlisted, GB) ; Desbiolles, Vincent ; Feuvrier, Jerome (CERN) ; Guyon, Jean-Luc (CERN) ; Mazet, Jacky (CERN) et al.
In the context of CERN's high-luminosity upgrade project (HL-LHC) for the Large Hadron Collider (LHC), a new double aperture beam orbit corrector magnets will be installed near the recombination dipole (D2). These 2.2 m long NbTi dipoles are built with the canted cosine theta (CCT) technique. [...]
2020 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 30 (2020) 4000505
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9.
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Assembly and Test of the HL-LHC Twin Aperture Orbit Corrector Based on Canted Cos-Theta Design
/ Kirby, G (CERN) ; Van Nugteren, J (CERN) ; Mentink, M (CERN) ; Canale, M (CERN) ; Gentini, L (CERN) ; Mazet, J (CERN) ; Pincot, F O (CERN) ; Mangiarotti, F J (CERN) ; Fiscarelli, L (CERN) ; Steckert, J (CERN) et al.
In the frame of the high-luminosity upgrade project (HL-LHC) at CERN, a double aperture, independently powered, family of beam orbit corrector magnets will be installed close to the two main LHC experiments Atlas and CMS. These 2.6 T magnets, built using a canted cos-theta design. [...]
IOP, 2020 - 10 p.
- Published in : J. Phys.: Conf. Ser. 1559 (2020) 012070
Published fulltext: PDF;
In : 14th European Conference on Applied Superconductivity, Glasgow, United Kingdom, 1 - 5 Sep 2019, pp.012070
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10.
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Test of short model and prototype of the HL-LHC D2 orbit corrector based on CCT technology
/ Mangiarotti, Franco (CERN) ; Kirby, Glyn (CERN) ; Duda, Michal (Cracow, INP ; CERN) ; Mentink, Matthias (CERN) ; Fiscarelli, Lucio (CERN) ; Bajko, Marta (CERN) ; Coll, Dominic (Unlisted, GB) ; Desbiolles, Vincent (CERN) ; Feuvrier, Jerome (CERN) ; Mazet, Jacky (CERN) et al.
In the frame of the high-luminosity upgrade project for the large hadron collider, new twin aperture beam orbit corrector magnets will be installed near the recombination dipole (D2). These magnets are 2.2 m long canted cosine theta NbTi dipoles, with two independently powered apertures oriented such that their field vectors are perpendicular to each other and to the direction of the beams. [...]
2019 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 29 (2019) 4002305
In : Applied Superconductivity Conference 2018, Seattle, United States Of America, 28 Oct - 2 Nov 2018, pp.4002305
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