The study of niobium(3) tin superconducting magnet systems for magnetic resonance spectrometer

The design and manufacture of a high magnetic field {dollar}Nbsb3Sn{dollar} superconducting magnet with a highly uniform field for NMR spectrometer constitutes a challenging problem in view of the wide range of applications. A new approach for the design of high-homogeneity solenoid magnet systems for NMR spectrometer was studied and an algorithm to calculate the zonal harmonics near the magnet center was applied successfully to design the magnet. A computer code was created to combine physics and engineering design together, and the design efficiency was improved greatly. Persistent joints were investigated and new techniques to make superconducting joints of both NbTi and {dollar}Nbsb3Sn{dollar} strands were developed. Quench behavior of {dollar}Nbsb3Sn{dollar} coils was studied and the quench propagation velocity was measured in the lab.