16 Tesla block-coil dipole for future hadron colliders

Several new concepts in magnetic design and coil fabrication are being incorporated into a design for an ultra-high field dipole magnet for future hadron colliders. The 16 Tesla block-coil dual dipole uses Nb/sub 3/Sn cable, a simple pancake coil construction, and face-loaded prestress geometry to achieve high magnetic efficiency and stable stress distribution at the limit of Nb/sub 3/Sn performance. A reverse-field end coil is used to cancel the concentration of field and stress at the coil ends and thereby eliminate the dipole ends as a limit to performance.