Test Results of CCT1—A 2.4 T Canted-Cosine-Theta Dipole Magnet

A two-layer Canted-Cosine-Theta (CCT) superconducting dipole magnet was built and tested. The magnet´s unique mandrel design uses machined channels and spars to guide the windings, intercept Lorentz forces, and circumvent tangential stress accumulation. The CCT magnet design provides a “near-perfect” current density distribution and requires minimal coil prestress. The CCT magnet design, with these inherent features, makes it a desirable option for a high field accelerator magnet. A two layer dipole (CCT1) using NbTi cable and a 50.8-mm clear bore was built and tested generating a 2.4 T dipole field. We report on the winding experience, measured field quality and quench history.