Construction of a Mirror-Configuration Stress-Managed $rm Nb_3rm Sn$ Block-Coil Dipole

The second phase of development of a new high-field dipole technology has been completed. A model dipole employing wind/react Nb 3 Sn cable and stress-managed block coil geometry was fabricated and will soon be tested at LBNL. The dipole features stress-strain management in its internal windings and metal-filled bladder preload. Pending validation of performance of these new features, the new technology should result in improved cost-effective fabrication of dipoles for 16 T and beyond. Construction experience and plans for the next phase of development are presented