Detailed design of the large-bore 8 T superconducting magnet for the NAFASSY test facility. (5th February 2015)

• Record Type: Journal Article
• Authors: Corato, V; Affinito, L; Anemona, A; Vetrella, U Besi; Zenobio, A Di; Zignani, C Fiamozzi; Freda, R; Messina, G; Muzzi, L; Perrella, M; Reccia, L; Tomassetti, G; Turtù, S; Corte, A della
• Is Part Of: Superconductor science & technology. Volume 28:Number 3(2015:Mar.)
• Publication Date: 2015-02-05
• Subjects: superconducting magnet -- large bore test facility -- Nb3Sn cable in conduit conductor; Superconductivity -- Periodicals; Superconductors -- Periodicals; 537.623
• DOI: 10.1088/0953-2048/28/3/034005
• Languages: English
• ISSNs: 0953-2048

Abstract

Abstract: The 'NAFASSY' (NAtional FAcility for Superconducting SYstems) facility is designed to test wound conductor samples under high-field conditions at variable temperatures. Due to its unique features, it is reasonable to assume that in the near future NAFASSY will have a preeminent role at the international level in the qualification of long coiled cables in operative conditions. The magnetic system consists of a large warm bore background solenoid, made up of three series-connected grading sections obtained by winding three different Nb3 Sn Cable-in-Conduit Conductors. Thanks to the financial support of the Italian Ministry for University and Research the low-field coil is currently under production. The design has been properly modified to allow the system to operate also as a stand-alone facility, with an inner bore diameter of 1144 mm. This magnet is able to provide about 7 T on its axis and about 8 T close to the insert inner radius, giving the possibility of performing a test relevant for large-sized NbTi or medium-field Nb3 Sn conductors. The detailed design of the 8 T magnet, including the electro-magnetic, structural and thermo-hydraulic analysis, is here reported, as well as the production status.