Conveners
M2PoA - Superconductors Materials II: Nb3Sn, FeAs-based
- Carlo Ferdeghini (CNR-SPIN)
- Xuan Peng (Hyper Tech Research Inc.)
Mr
David McGuire
(National High Magnetic Field Laboratory)
6/30/15, 9:00 AM
ICMC-01 - NbTi/Nb3Sn/A15 Processing and Properties
Poster Presentation
Due to the potential spatial temperature variations during heat treatment of the large central solenoid (CS) coils, it is necessary to study the strand’s heat treatment sensitivity by characterizing the strands heat treated with slightly different temperature profiles. We present critical current (Ic) and residual resistivity ratio (RRR) results of ITER Nb3Sn strands made by two manufacturers...
Dr
David Foley
(Shear Form, Inc.)
6/30/15, 9:00 AM
ICMC-01 - NbTi/Nb3Sn/A15 Processing and Properties
Poster Presentation
Ta diffusion barrier integrity is critical in the development of higher Nb ratios in internal-tin (IT) conductors. Current fabrication methodologies predominantly employ conventional wrapped Ta sheet, which deform non-uniformly during wire drawing. This leads to non-uniform Ta layers, with thickness varying between 10-2 microns as evident from IT cross-sectional images. The objective of this...
Xingchen Xu
(the Ohio State University)
6/30/15, 9:00 AM
ICMC-01 - NbTi/Nb3Sn/A15 Processing and Properties
Poster Presentation
For Nb3Sn strands used in magnets, persistent-current magnetization must be carefully considered because it is an important contributor to field errors in magnets. Compared with the usual measurements by magnetometers, the true magnetizations of Nb3Sn strands used in magnets are in fact smaller because the transport currents they are carrying suppress their magnetizations. In an earlier work...
