Abstract
Five Nb3Sn strands have been processed to achieve the compromise between high current density and low hysteresis losses. This work was performed in the framework of Phase II ITER program. Kilometric lengths have been industrially manufactured. As a result, Jcnon Cu (4.2K, 12T) up to 670 A/mm2 with non Cu hysteresis losses (±3T) of 590 mJ/cm3 have been measured. However superconducting properties should be enhanced by using heat treatments adapted to the specific strand design. Cr diffusion was identified as the major cause of RRR degradation. Feasibility of NbTi45.6wt% wires with an intermediate resistive barrier for poloidal coils is also demonstrated.
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© 1996 Springer Science+Business Media New York
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Bruzek, C.E., Suiten, P., Mocaer, P., Mougenot, P., Peltier, F., Grunblutt, G. (1996). Development of Superconducting Wires for Fusion Application. In: Summers, L.T. (eds) Advances in Cryogenic Engineering Materials . Advances in Cryogenic Engineering Materials , vol 42. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-9059-7_177
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DOI: https://doi.org/10.1007/978-1-4757-9059-7_177
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