Beneficial influence of Hf and Zr additions to Nb4at.%Ta on the vortex pinning of Nb${}_3$Sn with and without an O source

Shreyas Balachandran, Chiara Tarantini, Peter J. Lee +5

Here we show that addition of Hf to Nb4Ta can significantly improve the high field performance of Nb${}_3$Sn, making it suitable for dipole magnets for Future Circular Collider (FC…