학술논문
Overview and status of the Next European Dipole Joint Research Activity
Document Type
Article
Author
Devred, A; Baudouy, B; Baynham, D E; Boutboul, T; Canfer, S; Chorowski, M; Fabbricatore, P; Farinon, S; Félice, H; Fessia, P; Fydrych, J; Granata, V; Greco, M; Greenhalgh, J; Leroy, D; Loverige, P; Matkowski, M; Michalski, G; Michel, F; Oberli, L R; den Ouden, A; Pedrini, D; Pietrowicz, S; Polinski, J; Previtali, V; Quettier, L; Richter, D; Rifflet, J M; Rochford, J; Rondeaux, F; Sanz, S; Scheuerlein, C; Schwerg, N; Sgobba, S; Sorbi, M; Toral-Fernandez, F; van Weelderen, R; Védrine, P; Volpini, G
Source
Superconductor Science and Technology; March 2006, Vol. 19 Issue: 3 pS67-S83, 17p
Subject
Language
ISSN
09532048; 13616668
Abstract
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?2at 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.