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Design, Performance and Cabling Analysis of Nb3Sn Wires for the FCC Study
/ Hopkins, Simon C (CERN) ; Baskys, Algirdas (CERN) ; Bordini, Bernardo (CERN) ; Fleiter, Jerome (CERN) ; Ballarino, Amalia (CERN)
The hadron collider proposed by the Future Circular Collider (FCC) study would require high-field superconducting magnets capable of producing a dipole field of around 16 T in a 50 mm aperture. To develop a suitable conductor for these magnets, CERN is coordinating a conductor development programme aiming to obtain Nb$_3$Sn wire with a non-copper critical current density of 1500 A mm$^{-2}$ at 16 T and 4.2 K, in lengths suitable for manufacturing 14 m long magnets, and able to withstand cabling without significant degradation. [...]
IOP, 2020 - 10 p.
- Published in : J. Phys.: Conf. Ser. 1559 (2020) 012026
Published fulltext: PDF;
In : 14th European Conference on Applied Superconductivity, Glasgow, United Kingdom, 1 - 5 Sep 2019, pp.012026
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Quantitative Analysis and Optimization of Nb$_3$Sn Wire Designs Toward Future Circular Collider Performance Targets
/ Hopkins, Simon C (CERN) ; Baskys, Algirdas (CERN) ; Valero, Adrià Canós (CERN) ; Ballarino, Amalia (CERN)
In the context of the Future Circular Collider (FCC) study, industrial and academic partners are developing novel Nb3Sn superconducting wires with a wide variety of layouts, production methods, and compositions, with the aim of achieving challenging performance targets including a non-copper critical current density of 1500 A mm-2at 16 T and 4.2 K. There is a clear need for a systematic and quantitative approach to analyze these conductors, identifying correlations between performance, microstructure, and wire design, in order to optimize designs and heat treatments, and to identify the most promising directions for future trials. [...]
2019 - 7 p.
- Published in : IEEE Trans. Appl. Supercond. 29 (2019) 6001307
In : Applied Superconductivity Conference 2018, Seattle, United States Of America, 28 Oct - 2 Nov 2018, pp.6001307
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Transverse-pressure susceptibility of high-$J_c$ RRP and PIT types of Nb$_3$Sn Rutherford cables for accelerator magnets
/ Gao, P (Hefei, Inst. Plasma Phys. ; Twente U., Enschede) ; Dhallé, M (Twente U., Enschede) ; Bordini, B (CERN) ; Ballarino, A (CERN) ; Ten Kate, H H J (Twente U., Enschede)
In the frame of the High-Luminosity Large Hadron Collider construction and Future Circular Collider development program, the magnetic field in the accelerator dipole magnets is being enhanced to 11 T, and 15 T to 16 T level, respectively. Advanced Nb3Sn superconductors with a non-copper critical current density exceeding 2500 A mm$^{−2}$ at 4.2 K and 12 T, are being developed using the Restacked-Rod-Process (RRP) and Powder-In-Tube (PIT) wire technologies. [...]
2020 - 18 p.
- Published in : Supercond. Sci. Technol. 33 (2020) 125005
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Critical Current Measurements Under Transverse Pressure of a Nb3Sn Rutherford Cable Based on 1 mm RRP Wires
/ Duvauchelle, Jean-Eudes (CERN) ; Bordini, Bernardo (CERN) ; Fleiter, Jérôme (CERN) ; Ballarino, Amalia (CERN)
In order to achieve higher magnetic fields and/or larger magnet apertures, next generation accelerator magnets will be based on high-$J_{c}$ Nb$_{3}$Sn Rutherford cables. For the HighLuminosity LHC project, CERN is manufacturing dipole and quadrupole magnets based on state-of-the-art high-$J_{c}$ Nb$_{3}$Sn superconductor. [...]
2018 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 28 (2018) 4802305
In : 13th European Conference on Applied Superconductivity, ICCG, Geneva, Switzerland, 17 - 21 Sep 2017, pp.4802305
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Quench Propagation in Nb$_3$Sn Rutherford Cables for the Hi-Lumi Quadrupole Magnets
/ Fleiter, J (CERN) ; Bordini, B (CERN) ; Ballarino, A (CERN) ; Oberli, L (CERN) ; Izquierdo, S (CERN) ; Bottura, L (CERN)
The quadrupole magnets for the LHC High Luminosity (Hi-Lumi) upgrade will be based on Nb_3Sn Rutherford cables that operate at 1.9 K and experience magnetic fields larger than 12 T. Because of the large stored energy, one of the major issues in the design of these magnets is their protection. [...]
CERN-ACC-2015-0161.-
2015 - 4 p.
- Published in : IEEE Trans. Appl. Supercond. 25 (2015) 4802504
In : Applied Superconductivity Conference 2014, Charlotte, NC, USA, 10 - 15 Aug 2014, pp.4802504
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Irreversible degradation of Nb$_3$Sn Rutherford cables due to transverse compressive stress at room temperature
/ Ebermann, Patrick (CERN ; Vienna, Tech. U., Atominst.) ; Bernardi, Johannes (Vienna, Tech. U.) ; Fleiter, Jerome (CERN) ; Lackner, Friedrich (CERN) ; Meuter, Florian (CERN) ; Pieler, Magdalena (Vienna, Tech. U.) ; Scheuerlein, Christian (CERN) ; Schoerling, Daniel (CERN) ; Wolf, Felix (CERN ; T.U. Bergakademie Freiberg) ; Ballarino, Amalia (CERN) et al.
In the framework of the Future Circular Collider design study for a 100 TeV circular collider, 16 T superconducting bending magnets based on Nb$_3$Sn technology are being developed. A pre-stress on the conductor during magnet assembly at room temperature (RT) is needed to counteract the Lorentz forces during operation. [...]
2018 - 10 p.
- Published in : Supercond. Sci. Technol. 31 (2018) 065009
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