Conceptual design of superconducting magnet system for JT-60SA

K. Yoshida, K. Kizu, K. Tsuchiya, H. Tamai, M. Matsukawa, M. Kikuchi, A. Delia Corte, L. Muzzi, S. Turtù, A.Di. Zenobio, A. Pizzuto, C. Portafaix, S. Nicollet, B. Lacroix, P. Decool, J.-L. Duchateau, L. Zani

Research output: Contribution to journalArticle

23 Citations (Scopus)


The upgrade of JT-60U magnet system to superconducting coils (JT-60SA) has been decided by both parties of Japanese government (JA) and European commission (EU) in the framework of the Broader Approach (BA) agreement. The magnet system for JT-60SA consists of 18 Toroidal Field (TF) coils, a Central Solenoid (CS) with four modules, seven Equilibrium Field (EF) coils. The TF case encloses the winding pack and is the main structural component of the magnet system. The CS consists of independent winding pack modules, which is hung from the top of the TF coils through its pre-load structure. The seven EF coils are attached to the TF coil cases through supports which include flexible plates allowing radial displacements. The CS modules operate at high field and use Nb3Sn type superconductor. The TF coils and EF coils use NbTi superconductor. The magnet system has a large heat load from nuclear heating from DD fusion and large AC loss. This paper describes the technical requirements, the operational interface and the outline of conceptual design of the superconducting magnet system for JT-60SA. © 2008 IEEE.
Original languageEnglish
Article number4512965
Pages (from-to)441 - 446
Number of pages6
JournalIEEE Transactions on Applied Superconductivity
Issue number2
Publication statusPublished - Jun 2008
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Yoshida, K., Kizu, K., Tsuchiya, K., Tamai, H., Matsukawa, M., Kikuchi, M., ... Zani, L. (2008). Conceptual design of superconducting magnet system for JT-60SA. IEEE Transactions on Applied Superconductivity, 18(2), 441 - 446. [4512965].