Design and manufacture of a Nb

A. Della Corte, R. Bruzzese, S. Chiarelli, M. Spadoni, V. Cavaliere, M. Mariani, G. Masullo, A. Matrone, E. Petrillo, R. Quarantiello

Research output: Contribution to journalArticle


In the framework of the characterization and quality control of the Nb3Sn strand for the manufacturing of the ITER (International Thermonuclear Experimental Reactor) Model Coils, the Applied Superconductivity Laboratory at ENEA (Ente per le Nuove Tecnologie Energia Ambiente) Frascati decided to increase the background field of its facility for ICmeasurements from 14.5 T up to 16 T. The upgrade was obtained by an insert coil designed and manufactured by Ansaldo CRIS (Consorzio Ricerche Innovative per il Sud) Naples, Italy. The Nb3Sn strand provided by Europa Metalli is an internal tin diffusion high critical current density 0.90 mm wire with the following characteristic: IC= 160 A ## 4.2 K, 16.5 T; Cu/nonCu ratio 1. The solenoid (outer diameter 80 mm, inner bore 37 mm) was manufactured by winding the insulated Nb3Sn strand onto an AISI 316L stainless steel former and reacting it up to 650 °C. A self consistent unit has then been assembled, consisting of the insert module mechanical structure and separate current leads. This allows easy installation of the insert inside the 14.5 T, 80 mm background magnet; removal is possible also in cold conditions without damage. The operational current (113.7 A) was achieved at the first energization with a maximum field on the windings of 16.49 T. This test has been done connecting electrically in series the background magnet and the insert, being therefore limited by the maximum allowable current (114 A) in the background magnet. Further tests with an independent current supply to the insert will be carried out to evaluate its performance limits.
Original languageEnglish
Pages (from-to)458 - 461
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number1
Publication statusPublished - 2000
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Della Corte, A., Bruzzese, R., Chiarelli, S., Spadoni, M., Cavaliere, V., Mariani, M., ... Quarantiello, R. (2000). Design and manufacture of a Nb. IEEE Transactions on Applied Superconductivity, 10(1), 458 - 461.