Design Comparison of Four-Layer Full-Nb3Sn and Hybrid Nb3Sn/NbTi Cos-Theta Dipoles for the CERN High Field Magnet R&D Programme
Year: 2025
Type: article
Abstract: The High Field Magnet (HFM) R&D programme at CERN aims to find technological solutions for the construction of accelerator magnets to be installed in future post-LHC colliders. The Italian Institute for Nuclear Physics (INFN) and CERN are collaborating to design and fabricate a new four-layer costheta dipole able to achieve a bore field of 14 T with at least 20% margin on the load-line. Two design options are under evaluation: a four-layer dipole entirely made of Nb3Sn, and a hybrid configuration combining inner Nb3Sn layers with outer NbTi layers. Both options are being assessed for feasibility as short models, with scalable design choices for longer magnet prototypes suitable for accelerator integration. This paper presents a comparative study of the performance of the two design options. The results provide insights into the trade-offs between performance, complexity, and protection constraints in the development of next-generation high-field dipole magnets. The Full-Nb3Sn solution satisfies the HFM requirements, but the Hybrid solution is a promising, cost-effective alternative that can be considered for next-generation colliders.
Authors: M. Elisei, E. Beneduce, A. Bersani, M. Bracco, S. Burioli, B. Caiffi, M. Cannavo, G. Crespi, E. De Matteis, S. Dotti, S. Farinon, A.P. Foussat, A. Gagno, T. Maiello, S. Mariotto, R. Musenich, D. Novelli, A. Pampaloni, M. Prioli, L. Rossi, N. Sala, C. Santini, M. Sorbi, S. Sorti, M. Spadotto, M. Statera, E. Todesco, R.U. Valente
Institutions: Sapienza University of Rome, Istituto Nazionale di Fisica Nucleare, Istituto Nazionale di Fisica Nucleare, Laboratori Acceleratori e Superconduttività Applicata, Istituto Nazionale di Fisica Nucleare, Sezione di Genova, University of Genoa, University of Milan, European Organization for Nuclear Research, Politecnico di Milano
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,645
OpenAlex ID: W4414693333
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