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A design for the superconducting outsert of a 45-T hybrid magnet system using cable-in-conduit conductors

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9 Author(s)
Miller, J.R. ; NHMFL, Florida State Univ., Tallahassee, FL, USA ; van Sciver, S.W. ; Markiewicz, W.D. ; Schneider-Muntau, H.-J.
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A part of the mission of the new NHMFL is to have available for users in 1995 a hybrid magnet system capable of producing at least 45-T steady field on axis in a 33-mm working bore. Approximately 31 T of the combined field will be produced by a water-cooled insert. The superconducting outsert, which combines NbTi and Nb/sub 3/Sn conductor technologies, will provide more than 14 T. The authors describe an option for this superconducting outsert based on the cable-in-conduit-conductor (CICC) approach, where cabled strands of conductor are contained in intimate contact with helium coolant inside a strong steel sheath that also acts as distributed structure. A departure from the usual practice for CICC technology is in the application of static Hell cooling, which simultaneously provides higher conductor performance and nearly passive extraction of the rather modest heat loads during normal operation of the magnet system.<>

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Applied Superconductivity, IEEE Transactions on  (Volume:3 ,  Issue: 1 )