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Author(s)
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Rossi, Lucio (CERN) ; Badel, Arnaud (IUT, Grenoble) ; Bajas, Hugues (CERN) ; Bajko, Marta (CERN) ; Ballarino, Amalia (CERN) ; Barth, Christian (Geneva U.) ; Betz, Ulrich (SIS GmbH) ; Bottura, Luca (CERN) ; Broggi, Francesco (LASA, Segrate) ; Chiuchiolo, Antonella (CERN) ; Dhallé, Marc (Twente U., Enschede) ; Durante, Maria (Saclay) ; Fazilleau, Philippe (Saclay) ; Fleiter, Jerome (CERN) ; Gao, Peng (Twente U., Enschede) ; Goldacker, Wilfried (KIT, Karlsruhe) ; Kario, Anna (KIT, Karlsruhe) ; Kirby, Glyn (CERN) ; Haro, E (Nokia Res. Ctr., Tampere) ; Himbele, J (IUT, Grenoble) ; Lorin, C (Saclay) ; Murtomaki, J (CERN) ; Nugteren, Jeroen van (CERN) ; Petrone, Carlo (CERN) ; de Rijk, Gijs (CERN) ; Ruuskanen, J (Nokia Res. Ctr., Tampere) ; Senatore, Carmine (Geneva U.) ; Statera, Marco (LASA, Segrate) ; Stenvall, Antti (Nokia Res. Ctr., Tampere) ; Tixador, Pascal (IUT, Grenoble) ; Yang, Yifeng (Southampton U.) ; Usoskin, Alexander (SIS GmbH) ; Zangenberg, Nikolaj (Aarhus U.) |
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Abstract
| The EuCARD2 collaboration aims at the development of a 10 kA-class superconducting, high current density cable suitable for accelerator magnets, to be tested in small coils and magnets capable to deliver 3-5 T when energized in stand-alone mode, and 15-18 T when inserted in a 12-13 T background magnet. REBCO tape, assembled in a Roebel cable, was selected as conductor. The developed REBCO tape has reached a record engineering critical current density, at 4.2 K and 18 T of ${\text{956 A/mm}}^{2}$. Roebel cable carried up to 13 kA at 20 K when tested in a small coil (FeatherM0.4). Then a first dipole magnet, wound with two low-grade Roebel cables of 25 m each, was assembled and tested. The dipole reached the short sample critical current of 6 kA generating more than 3 T central field at about 5.7 K, with indications of good current transfer among cable strands and of relatively soft transition. The construction of a costheta dipole is also discussed. Eucard2 is reaching its objective and is continuing with the H2020-ARIES program aiming at doubling the Je at 20 T to obtain 6 T as standalone and 18 T as insert in a high field facility. |