Overview and status of the Next European Dipole Joint Research Activity

A. Devred, B. Baudouy, D.E. Baynham, T. Boutboul, S. Canfer, M Chorowski, P. Fabbricatore, S. Farinon, A. den Ouden, R. van Weelderen, P. Vedrine, G. Volpini

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The Next European Dipole (NED) Joint Research Activity was launched on 1 January 2004 to promote the development of high-performance Nb3Sn conductors in collaboration with European industry (aiming at a non-copper critical current density of 1500 A mm−2 at 4.2 K and 15 T) and to assess the suitability of Nb3Sn technology to the next generation of accelerator magnets (aiming at an aperture of 88 mm and a conductor peak field of ~15 T). It is part of the Coordinated Accelerator Research in Europe (CARE) project, which involves eight collaborators, and is half-funded by the European Union. After briefly recalling the Activity organization, we report the main progress achieved over the last year, which includes: the manufacturing of a double-bath He II cryostat for heat transfer measurements through Nb3Sn conductor insulation, detailed quench computations for various NED-like magnet configurations, the award of two industrial subcontracts for Nb3Sn conductor development, the first results of a cross-calibration programme of test facilities for Nb3Sn wire characterization, detailed investigations of the mechanical properties of heavily cold-drawn Cu/Nb/Sn composite wires, and the preliminary assessment of a new insulation system based on polyimide-sized glass fibre tapes. Last, we briefly review the efforts of an ongoing Working Group on magnet design and optimization.
Original languageUndefined
Pages (from-to)67-83
Number of pages16
JournalSuperconductor science and technology
Issue number3
Publication statusPublished - 2006


  • IR-74430
  • METIS-233832
  • EC Grant Agreement nr.: FP6/506395

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