A new design for JT-60SA toroidal field coils conductor and joints

L. Zani, A. Pizzuto, L. Semeraro, D. Ciazynski, A. Cucchiaro, P. Decool, A. Della Corte, A. Di Zenobio, N. Dolgetta, J.-L. Duchateau, P. Hertout, M. Kikuchi, B. Lacroix, F. Molinie, L. Muzzi, S. Nicollet, L. Petrizzi, C. Portafaix, G. Ramogida, S. RoccellaB. Turck, S. Turtù, J.-M. Verger, R. Villari, K. Yoshida

Research output: Contribution to journalArticle

5 Citations (Scopus)


The upgrade of JT-60U to JT-60 Super Advanced (JT-60SA), a fully superconducting tokamak, will be performed in the framework of the Broader Approach (BA) agreement between Europe (EU) and Japan. In particular, the Toroidal Field (TF) system, which includes 18 coils, is foreseen to be procured by France, Italy and Germany. This work covers activities from design and manufacturing to shipping to Japan. The present paper is mainly devoted to the analyses that lead to the conductor design and to the technical specifications of the Joints for the JT-60S A TF coils. The conductor geometry is described, which is derived from Cable-In-Conduit concept and adapted to the actual JT-60SA tokamak operating conditions, principally the ITER-like scenario. The reported simulations and calculations are particularly dealing with the stability analysis and the power deposition during normal and off-normal conditions (AC losses, nuclear heating). The final conductor solution was selected through a trade-off between scientific approach and industrial technical orientation. Besides, the TF system connections layout is shown, derived from the industrially assessed twin-box concept, together with the associated thermo-hydraulic calculations ensuring a proper temperature margin. © 2008 IEEE.
Original languageEnglish
Article number4520261
Pages (from-to)216 - 219
Number of pages4
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

Zani, L., Pizzuto, A., Semeraro, L., Ciazynski, D., Cucchiaro, A., Decool, P., ... Yoshida, K. (2008). A new design for JT-60SA toroidal field coils conductor and joints. IEEE Transactions on Applied Superconductivity, 18(2), 216 - 219. [4520261]. https://doi.org/10.1109/TASC.2008.921259