| Article | |
| Title | Design Comparison of Four-Layer Full-Nb$_{3}$Sn and Hybrid Nb$_{3}$Sn/NbTi Cos-Theta Dipoles for the CERN High Field Magnet R&D Programme |
| Author(s) | Musenich, R (INFN, Genoa) ; Novelli, D (U. Rome La Sapienza (main) ; INFN, Genoa) ; Pampaloni, A (INFN, Genoa) ; Prioli, M (INFN, Milan) ; Rossi, L (Milan U. ; INFN, Milan) ; Sala, N (CERN) ; Santini, C (INFN, Milan) ; Sorbi, M (Milan U. ; INFN, Milan) ; Sorti, S (Milan U. ; INFN, Milan) ; Spadotto, M (INFN, Milan ; Milan Polytechnic) ; Statera, M (INFN, Milan) ; Todesco, E (CERN) ; Valente, R U (INFN, Milan) |
| Publication | 2026 |
| Number of pages | 5 |
| In: | IEEE Trans. Appl. Supercond. 36 (2026) 1-5 |
| DOI | 10.1109/tasc.2025.3615181 |
| Subject category | Accelerators and Storage Rings |
| 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 cos-theta dipole able to achieve a bore field of 14T with at least 20% margin on the load-line. Two design options are under evaluation: a four-layer dipole entirely made of Nb$_{3}$Sn, and a hybrid configuration combining inner Nb$_{3}$Sn 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-Nb$_{3}$Sn solution satisfies the HFM requirements, but the Hybrid solution is a promising, cost-effective alternative that can be considered for next-generation colliders. |
| Copyright/License | publication: © 2025 The Author(s) (License: CC BY 4.0) |
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Record created 2025-10-17, last modified 2025-10-17