Testing of Full Size High Current Superconductors in SULTAN III

B. Blau, I. Rohleder, G. Vécsey, G. Pasotti, M.V. Ricci, N. Sacchetti, P. Bruzzone, H. Katheder, N. Mitchell, D. Bessette, J.L. Duchateau

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The high field test facility SULTAN III in operation at PSI/Switzerland tests full size industrial prototype superconductors for fusion applications such as ITER. The facility provides a background Field of up to 11 T over a length of 58 cm. A 50 kA superconducting transformer works as a very low noise current source which allows a criterion of 0.1 µV/cm to determine the superconducting to normal transition. Three 3.6 m long cable-in-conduit conductors based on both NbTi and Nb3Sn, developed by different manufacturers, suitable for the central solenoid and toroidal field coils of ITER, have been tested so far. This paper presents the results of extensive measurements of critical current and current sharing temperature of the Nb3Sn conductors in the 8 - 11 T range for temperatures between 4.5 K and 11 K. Voltage versus current curves have been analyzed with respect to the n value. The manufacturing of a high quality joint between two Nb3Sn conductors after heat treatment is reported, together with some measurements of the joint resistance. © 1994 IEEE
Original languageEnglish
Pages (from-to)1934 - 1937
Number of pages4
JournalIEEE Transactions on Magnetics
Issue number4
Publication statusPublished - 1994
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Blau, B., Rohleder, I., Vécsey, G., Pasotti, G., Ricci, M. V., Sacchetti, N., ... Duchateau, J. L. (1994). Testing of Full Size High Current Superconductors in SULTAN III. IEEE Transactions on Magnetics, 30(4), 1934 - 1937. https://doi.org/10.1109/20.305642