Study of HTS Energy-Saving Superconducting Magnet Options for the PSI Particle Beam Lines

In recent years, particle accelerator facilities have become more aware of the sustainability of their scientific research activity investing in new energy-efficient technologies and energy management of their infrastructure. To address this issue, focusing on medium- to high-energy range proton and heavy ion beamlines, a growing interest in using superconducting magnets instead of energy-demanding resistive configurations has been observed. The proposed study, conducted by the research team from the University of Milan and the Istituto Nazionale di Fisica Nucleare (INFN), Milano, Laboratorio di Acceleratori e Superconduttività Applicata (LASA) lab, focuses on the development of steady-state magnet designs based on high-temperature superconductor (HTS) ReBCO (rare earth copper oxide) tapes. The paper presents a comparative analysis of energy consumption reduction in superferric dipole case studies for the Paul Scherrer Institut (PSI) accelerator complex, focusing on replacing conventional resistive coils with HTS windings optimized at 50 K in a window frame or h-type iron yoke. The outcomes of the proposed designs are compared against the existing resistive magnet performances, showing a strong advantage of this innovative approach for large-scale research facilities in terms of energy consumption and cost-effectiveness.