Thermomechanical design of the conduction cooled EuroSIG superconducting magnet

Hadron therapy is a cancer treatment that employs hadrons: a crucial component of a treatment facility is the gantry, a rotating machine that irradiates the patient from multiple angles, significantly improving treatment effectiveness. Currently, several initiatives are developing the first European ion gantry using superconducting magnets to reduce both weight and cost compared to existing ones. Among these initiatives, the EuroSIG project is working on new technologies for this gantry, including the development of bending superconducting magnets that guide the particles toward the patient, facing the challenge of combining strong curvature, moderate ramp rate and conduction cooling. The project is manufacturing a demonstrator magnet for this application, which will first be tested in a helium bath. The design, however, is also compatible with a subsequent test in conduction, marking the first step toward developing the prototype. This paper presents the preliminary design of the conduction cooling system of the EuroSIG dipole magnet, including both the demonstrator and prototype, and its integration into the mechanical structure designed by INFN-Genoa. This work constitutes the first step in assessing the feasibility of conduction cooling for this novel magnet layout. Experimental validation of the proposed cooling concept, assembly and manufacturing approach will be the subject of future activities.