The optimization of NbTi-Nb/sub 3/Sn high field superconducting magnet used for physics experiments

An approach to optimum-cost design of a multigraded NbTi-Nb/sub 3/Sn high-field superconducting magnet is proposed. Investigation shows that by reasonable choice of the contribution of NbTi and Nb/sub 3/Sn coils to the central field and by properly increasing the beta of both, an optimum-cost design of the NbTi-Nb/sub 3/Sn solenoid magnet can be obtained. As an example, a calculation of a 14-T three-graded NbTi-Nb/sub 3/Sn superconducting magnet with a bore of 31-mm diameter is given.<
>