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Extensive Characterization of the 1 mm PIT {\rm Nb}_{3}{\rm Sn} Strand for the 13-T FRESCA2 Magnet

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9 Author(s)
Bordini, B. ; Technol. Dept., CERN, Geneva, Switzerland ; Bottura, L. ; Mondonico, G. ; Oberli, L.
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In the framework of the EuCARD program, CERN is participating in the development of a 13 T 100-mm-aperture dipole magnet to upgrade the superconducting cable test facility FRESCA at CERN. The conductor candidates for building this magnet are two 1-mm Nb3Sn strands: the Powder In Tube (PIT) produced by Bruker-EAS and the 132/169 RRP by Oxford Superconducting Technology (OST). Recently the PIT strand has been extensively characterized by CERN in collaboration with the University of Geneva (UniGe). The critical current dependence on the magnetic field and on the axial strain has been measured at different temperatures. Furthermore, the strand magnetization has been measured at different temperature using a vibrating sample magnetometer. Finally the magneto-thermal stability of this strand was studied by measuring the quench current between 0 T and 12 T at 1.9 K and 4.3 K. The experimental results are compared with an optimized scaling law for the critical current of Nb3Sn strands. In this paper the results obtained for the PIT strand are summarized and discussed.

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Applied Superconductivity, IEEE Transactions on  (Volume:22 ,  Issue: 3 )