Effective Low Magnetic Field Jc(B) Scaling of ITER Nb3Sn Strands by Magnetization and Critical Current Measurements

Jianfeng Huang*, Yury Ilyin, Denis Bessette, Chao Zhou, Ruben Lubkemann, Cris Vermeer, Sander Wessel, Arend Nijhuis

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

102 Downloads (Pure)

Abstract

For the International Thermonuclear Experimental Reactor magnets, a significant fraction of the Nb3Sn conductors will be operating at a low field (B < 4 T), such as the outer turns of the central solenoid modules and toroidal field winding packs, while so far, the Ic(B,T, ) parameterization has been derived from measurements carried out at higher fields (B ≥ 7 T). It may not be accurate enough to adopt this parameterization for the extrapolation of the conductors' operating performance in terms of critical current (Ic) and current sharing (Tcs). The critical current characteristic can be effectively extended to the lower field region by means of a relation between the magnetization and critical current. The parameterization of the derived critical current scaling law Jc(B) is processed for the field range of the magnetization measurement (0 < B ≤ 9 T) and the critical current measurements (7 ≤ B < 12 T) in order to cover the full range up to 12 T.

Original languageEnglish
Article number4204110
JournalIEEE transactions on applied superconductivity
Volume32
Issue number8
Early online date14 Jul 2022
DOIs
Publication statusPublished - Nov 2022

Keywords

  • Critical current
  • Hysteresis loss
  • International Thermonuclear Experimental Reactor (ITER)
  • Magnetization
  • NbSn
  • Parametrization
  • 22/4 OA procedure

Fingerprint

Dive into the research topics of 'Effective Low Magnetic Field Jc(B) Scaling of ITER Nb3Sn Strands by Magnetization and Critical Current Measurements'. Together they form a unique fingerprint.

Cite this