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Considerations Towards a High Field Accelerator Magnets Programme Part I: Motivation, Goals, Challenges and Program Drivers / Bottura, Luca (CERN)
The Large Hadron Collider (LHC) at CERN can be regarded as the ultimate collider built with Nb-Ti magnets. [...]
- 2021. - 21 p.
LHC Full Energy Exploitation Study: Upgrade for Operation Beyond Ultimate Energy of 7.5TeV / Bruning, Oliver (CERN) ; Apollonio, Andrea (CERN) ; Izquierdo Bermudez, Susana (CERN) ; Bottura, Luca (CERN) ; Brodzinski, Krzysztof (CERN) ; Claudet, Serge (CERN) ; Delikaris, Dimitri (CERN) ; De Maria, Riccardo (CERN) ; Giovannozzi, Massimo (CERN) ; Goddard, Brennan (CERN) et al.
This report looks at the feasibility and limitations of upgrading the HL-LHC for operation beyond the ultimate beam energy of 7.5 TeV by means of replacing a fraction of the nominal LHC dipole magnets with 11 T Nb3Sn magnets [...]
- 2020. - 22 p.
Full text

© 2013-2018 CERN
Nb$_{3}$Sn based coils for High Field Magnet built at CERN for the HL-LHC program
03 Oct 2013
Keywords: HL-LHC
Tirage(s): 16
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Residual strain in the Nb$_3$Sn 11 T dipole magnet coils for HL-LHC / Scheuerlein, C (CERN) ; Di Michiel, M (ESRF, Grenoble) ; Hofmann, M (Forschungsreaktor Munich) ; Lorentzon, M (CERN) ; Lackner, F (CERN) ; Flükiger, R (CERN) ; Savary, F (CERN) ; Bottura, L (CERN)
Nb$_{3}$Sn magnets are presently built for the HL-LHC accelerator upgrade and are developed for the Future Circular Collider study. The knowledge of the Nb$_{3}$Sn strain state distribution in these magnets is required in order to predict their ultimate performance limit. [...]
2017 - Published in : Supercond. Sci. Technol. 30 (2017) 125002 Fulltext: PDF;
The CERN FCC Conductor Development Program: A Worldwide Effort for the Future Generation of High Field Magnets / Ballarino, Amalia (CERN) ; Hopkins, Simon (CERN) ; Bordini, Bernardo (CERN) ; Richter, David (CERN) ; Tommasini, Davide (CERN) ; Bottura, Luca (CERN) ; Benedikt, Michael (CERN) ; Sugano, Michinaka ; Ogitsu, Toru ; Kawashima, Shinya (Kobe Steel) et al.
The study of next-generation high-energy accelerators based on 16 T dipoles has emphasized the need for higher performance, cost-effective Nb$_3$Sn superconducting wires. A Conductor Development Program aiming to reach a non-copper critical current density ($J_c$) of 1500 A/mm2 at 16 T and 4.2 K has been launched by CERN, with the involvement of industry and laboratories worldwide. [...]
CERN-ACC-2019-0001.- Geneva : CERN, 2018 - 9 p. - Published in : IEEE Trans. Appl. Supercond. 29 (2019) 6000709 Fulltext: PDF;
In : Applied Superconductivity Conference 2018, Seattle, United States Of America, 28 Oct - 2 Nov 2018
Magnetic Measurements and Analysis of the First 11-T Nb$_{3}$Sn Dipole Models Developed at CERN for HL-LHC / Fiscarelli, L (CERN) ; Auchmann, B (CERN) ; Izquierdo Bermudez, S (CERN) ; Bordini, B (CERN) ; Dunkel, O (CERN) ; Karppinen, M (CERN) ; Loffler, C (CERN) ; Russenschuck, S (CERN) ; Savary, F (CERN) ; Smekens, D (CERN) et al.
The high-luminosity upgrade for the LHC (HL-LHC) envisages the replacement of some 15-m-long NbTi dipoles in the dispersion suppressor area by shorter Nb_3Sn magnets with a nominal field of 11 T. The new magnets must be compatible with the lattice and other main systems of the LHC. [...]
2016 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 26 (2016) 4003805
In : 24th International Conference on Magnet Technology, Seoul, Korea, 18 - 23 Oct 2015, pp.4003805
Targets for R&D on Nb$_3$Sn conductor for High Energy Physics / Ballarino, A (CERN) ; Bottura, L (CERN)
High Energy Physics has been consistently pushing the performance of technical superconductors, for the benefit of high field magnet technology. So far the workhorse for particle accelerators has been Nb-Ti, but the practical performance limit has been attained with the LHC. [...]
CERN-ACC-2015-0021.- Geneva : CERN, 2015 - 6 p. - Published in : IEEE Trans. Appl. Supercond. 25 (2015) 6000906 Fulltext: PDF; IEEE Open Access article: PDF;
In : Applied Superconductivity Conference 2014, Charlotte, NC, USA, 10 - 15 Aug 2014, pp.6000906
Evaluation of critical current density and residual resistance ratio limits in powder in tube Nb$_{3}$Sn conductors / Segal, Christopher (Natl. High Mag. Field Lab.) ; Tarantini, Chiara (Natl. High Mag. Field Lab.) ; Sung, Zu Hawn (Natl. High Mag. Field Lab.) ; Lee, Peter J (Natl. High Mag. Field Lab.) ; Sailer, Bernd (Heraeus, Hanau) ; Thoener, Manfred (Heraeus, Hanau) ; Schlenga, Klaud (Heraeus, Hanau) ; Ballarino, Amalia (CERN) ; Bottura, Luca (CERN) ; Bordini, Bernardo (CERN) et al.
High critical current density ( Jc) Nb$_{3}$Sn A15 multifilamentary wires require a large volume fraction of small grain (SG), superconducting A15 phase, as well as Cu stabilizer with high Residual Resistance Ratio (RRR) to provide electromagnetic stabilization and protection. In powder-in-tube (PIT) wires the unreacted Nb7.5 wt%Ta outer layer of the tubular filaments acts as a diffusion barrier and protects the interfilamentary Cu stabilizer from Sn contamination. [...]
CERN-ACC-2016-0340.- 2016 - 10. - Published in : Supercond. Sci. Technol. 29 (2016) 085003 Fulltext: PDF;
Nb$_{3}$Sn 11 T Dipole for the High Luminosity LHC (CERN) / Bordini, Bernardo (CERN) ; Bottura, Luca (CERN) ; Devred, Arnaud (CERN) ; Fiscarelli, Lucio (CERN) ; Karppinen, Mikko (CERN) ; de Rijk, Gijs (CERN) ; Rossi, Lucio (CERN ; Milan Bicocca U.) ; Savary, Frédéric (CERN) ; Willering, Gerard (CERN)
This chapter describes the design of, and parameters for, the 11 T dipole developed at the European Organization for Nuclear Research (CERN) for the High Luminosity Large Hadron Collider (HL-LHC) project. The results for testing the short models as well as the first 5 m long magnet are also presented. [...]
2019 - 36 p. - Published in : 10.1007/978-3-030-16118-7_9
In : Nb$_{3}$Sn accelerator magnets, pp.223-258
High-field Magnet Development toward the High Luminosity LHC / Apollinari, Giorgio (Fermilab)
The upcoming Luminosity upgrade of the LHC (HL-LHC) will rely on the use of Accelerator Quality Nb$_{3}$Sn Magnets which have been the focus of an intense R&D; effort in the last decade. This contribution will describe the R&D; and results of Nb$_{3}$Sn Accelerator Quality High Field Magnets development efforts, with emphasis on the activities considered for the HL-LHC upgrades..
FERMILAB-CONF-14-326-TD.- 2014 - 4 p. - Published in : , pp. TUOCB02 Fulltext: tuocb02 - PDF; fermilab-conf-14-326-td - PDF; External links: Published version from JACoW; FERMILABCONF
In : 5th International Particle Accelerator Conference, Dresden, Germany, 15 - 20 Jun 2014, pp.983

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