Speaker
Description
The Superconducting Ion Gantry (SIG) project is part of a collaborative effort between INFN, CERN, CNAO, and MedAustron to improve cancer treatment through the development of lightweight, compact ion gantries. These systems aim to enhance patient care by enabling precise, non-coplanar irradiation with reduced damage to surrounding healthy tissues. Central to this effort is the design of a 4 T curved superconducting dipole magnet, based on Nb-Ti Rutherford cables, with a curvature radius of 1.65 m and an 80 mm aperture, tailored for a 430 MeV/u carbon ion gantry.
This work focuses on the mechanical challenges posed by the magnet’s high curvature, maintained by two curved steel clamps, and the use of indirect cooling systems. A 30° demonstrator is under development as a proof of concept for the final 45° dipole, validating both the magnet's design and the proposed assembly technique.
Building on previous studies, this work presents a complete 3D FEM analysis of the SIG dipole magnet’s support structure. The vertical tie-rod system is dimensioned to provide preload, compensating for differential thermal contractions and maximizing contact between the coil, collars, and yoke, while respecting structural limits. Additionally, the horizontal preload system is designed.
