Effects of Low-Temperature Fusion Neutron Irradiation on Critical Properties of a Monofilament Niobium-Tin Superconductor

摘要

The objective of this work was to irradiate a Nb sub 3 Sn superconductor with 14.8 MeV neutrons at 4 K and measure critical current in transverse fields of up to 12 T, irradiating up to a fluence sufficient to decrease the critical current to below its initial value. Critical temperatures were also to be measured. The samples were to be kept near 4 K between the irradiation and the measurement of critical properties. This work is directed toward establishing an engineering design fluence limit for Nb sub 3 Sn when used in fusion reactor superconducting magnets. (ERA citation 09:021571)