Design features of internal tin superconductors for ITER magnetic system

The influence of parameters of internal tin superconductor design on the main working characteristics such as critical current density and hystereris losses were analyzed. It was shown that having the value of hysteresis losses at the acceptable level of 400-600 mJ/cm/sup 3/, the critical current density 20 30% higher than the value typical for bronze route processed superconductors was attainable in principle. The results or experimental work on the design of new types of internal tin superconductors for ITER magnetic system are given.