Speaker
Description
Future high-energy proton colliders will require high-field accelerator magnets beyond the capabilities of Nb-Ti technology. The Nb₃Sn quadrupole magnets developed for the High-Luminosity LHC upgrade represent the first large-scale application of this technology in an operational accelerator. Following an extensive short-model R&D program—comprising about 40 coils and seven 1.5 m-long magnets—a full-scale prototyping phase established the basis for series production. The series fabrication phase is now nearing completion, with more than 120 coils of 4.5 m length produced within the US-Accelerator Upgrade Project and over 70 coils of 7.2 m length manufactured at CERN. This large-scale effort across several manufacturing sites provides a unique insight in the scalability of Nb₃Sn technology in terms of magnet length, production volume and throughput. We present an overview of the production timeline, learning curve, major non-conformities and process improvements focusing on coil fabrication.
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