Powder-in-Tube (PIT) Nb3Sn conductors for high-field magnets

J.H. Lindenhovius, E.M. Hornsveld, A. den Ouden, W.A.J. Wessel, H.H.J. ten Kate

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New Nb3Sn conductors, based on the powder-in-tube (PIT) process, have been developed for application in accelerator magnets and high-field solenoids. For application in accelerator magnets, SMI has developed a binary 504 filament PIT conductor by optimizing the manufacturing process and adjustment of the conductor lay-out. It uniquely combines a non-copper current density of 2680 A/mm2@10 T with an effective filament diameter of about 20 μm. This binary conductor may be used in a 10 T, wide bore model separator dipole magnet for the LHC, which is being developed by a collaboration of the University of Twente and CERN. A ternary (Nb/7.5wt%Ta)3Sn conductor containing 37 filaments is particularly suited for application in extremely high-field superconducting solenoids. This wire features a copper content of 43%, a non-copper current density of 217 A/mm2@20 T and a Bc2 of 25.6 T. The main issues and the experimental results of the development program of PIT Nb3Sn conductors are presented and discussed in this paper
Original languageEnglish
Pages (from-to)975-978
Number of pages4
JournalIEEE transactions on applied superconductivity
Issue number1
Publication statusPublished - 2000
Event16th International Conference on Magnet Technology, MT-16 1999 - Ponte Vedra Beach, United States
Duration: 29 Sep 19991 Oct 1999
Conference number: 16


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