Influence of Indentation on the Critical Current of Nb3Sn Strands

The Japan Atomic Energy Agency (JAEA) is procuring Central Solenoid (CS) conductorsfor all modules forITER. The superconducting properties of the Nb3Sn CS conductors will have to sustain 60,000 electromagnetic (EM) cycles. The current sharing temperatures (Tcs) were stable with EM cycles in short tw...

Full description

Saved in:
Bibliographic Details
Published inPhysics procedia Vol. 67; pp. 908 - 913
Main Authors Tomone, Suwa, Yoshihiro, Nabara, Yoshikazu, Takahashi, Masayuki, Oshikiri, Fumiaki, Tsutsumi, Kazuyuki, Shibutani, Yoshihiko, Nunoya, Yukinobu, Murakami, Katsumi, Miyashita, Sim, Ki-Hong, Kwon, Soun Pil
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2015
Subjects
critical current
deformation before heat treatment
degradation
ITER
Nb3Sn strand
Nb3Sn strand
ITER
degradation
deformation before heat treatment
critical current
Online AccessGet full text

Cover

More Information
Summary:The Japan Atomic Energy Agency (JAEA) is procuring Central Solenoid (CS) conductorsfor all modules forITER. The superconducting properties of the Nb3Sn CS conductors will have to sustain 60,000 electromagnetic (EM) cycles. The current sharing temperatures (Tcs) were stable with EM cycles in short twist pitch conductors.However, the short twist pitch and tight cabling increases indented strands at the contact point between strands before heat treatment. The results of Ic measurement on artificially indented Nb3Sn strands indicate that Ic was almost constant within a critical depth of the indentations.
ISSN:1875-3892
1875-3892
DOI:10.1016/j.phpro.2015.06.153