  New accelerator magnet technology based on Nb3Sn superconductor is being
developed at Fermilab since late 90's. Six short dipole models, seven short
quadrupole models and numerous individual dipole and quadrupole coils have been
built and tested, demonstrating magnet performance parameters and their
reproducibility. The technology scale up program has built and tested several
dipole and quadrupole coils up to 4-m long. The results of this work are
summarized in the paper.
