A model for the prediction of Nb/sub 3/Sn critical current as a function of field, temperature, strain, and radiation damage

An empirical model is presented that predicts the critical current density (J/sub c/) of Nb/sub 3/Sn wires under the combined effects of temperature, strain, and radiation damage. The model, based on previous work of D.P. Hampshire et al. (1985) and J. W. Ekin (1980), predicts J/sub c/ with a reasonable degree of accuracy. The model can be used with a limited number of input parameters. eliminating the need for detailed characterization, particularly the difficult tasks of measuring critical current as a function of temperature and radiation damage.