The Future Circular Collider study for hadron-hadron collisions (FCC-hh) foresees a collision energy of 100 TeV. This means that the detector magnets have to provide strong magnetic fields over longer distances compared to the LHC experiments. One of the conceptual detector magnet designs currently being developed for FCC-hh is the “Twin Solenoid”, which features two concentric superconducting solenoids.