June 28, 2015 to July 2, 2015
JW Marriott Starr Pass Resort
Etc/GMT-7 timezone

Suppression of persistent-current magnetization of Nb3Sn strands by transport current

Jun 30, 2015, 9:00 AM
Exhibit Hall (Arizona Ballroom)

Exhibit Hall (Arizona Ballroom)

Poster Presentation ICMC-01 - NbTi/Nb3Sn/A15 Processing and Properties M2PoA - Superconductors Materials II: Nb3Sn, FeAs-based


Xingchen Xu (the Ohio State University)


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 we investigated this influence on a cylindrical wire with constant Jc(B) by finite element modeling (FEM). In this work we experimentally measure the magnetization of a practical Nb3Sn strand with transport current using a lab-designed device equipped with two Hall probe magnetometers. This experiment yields a quantitative estimation of the dependences of the strand magnetization on transport current and magnetic field.

Primary author

Xingchen Xu (the Ohio State University)


Mike Sumption (The Ohio State University) Dr Milan Majoros (the Ohio State University) Dr Ted Collings (the Ohio State University)

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