Design and Characterization of the Interlayer Joint between Low-Field Nb3Sn Conductors of a Layer Wound DEMO TF Coil
| Autor: | Simonetta Turtu, Kamil Sedlak, Riccardo Righetti, Chiarasole Fiamozzi Zignani, A. Anemona, Luigi Muzzi, R. Freda, Antonio della Corte, A. Bragagni, Andrea Formichetti, Mithlesh Kumar, G. Molino, Boris Stepanov, Lucio Merli, Gianluca De Marzi, Massimo Seri, Mohammed Arabi, Pierluigi Bruzzone, Marco Roveta, L. Affinito, G. Roveta, Stefano Galignano, Valentina Corato, Aldo Di Zenobio, S. Chiarelli |
|---|---|
| Přispěvatelé: | Muzzi, Luigi, Affinito, Luigi, Chiarelli, Sandro, Corato, Valentina, Della Corte, Antonio, De Marzi, Gianluca, Di Zenobio, Aldo, Fiamozzi Zignani, Chiarasole, Freda, Rosa, Turtu, Simonetta, Anemona, Alessandro, Formichetti, Andrea |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Superconductivity
Materials science Mechanical engineering Fusion Magnets AC loss Superconducting magnet Condensed Matter Physics 7. Clean energy 01 natural sciences Electronic Optical and Magnetic Materials Conductor Conceptual design Electromagnetic coil Magnet Cable-in-Conduit-Conductor 0103 physical sciences Electrical and Electronic Engineering 010306 general physics Electrical conductor Joint (geology) DEMO Joint Resistance |
| Zdroj: | IEEE Transactions on Applied Superconductivity |
| Popis: | In the frame of the conceptual design studies for the Toroidal Field (TF) coils of DEMO, a solution based on a layer-wound magnet, rectangular-shaped Cable-in-Conduit conductors and W&R manufacturing approach, is being developed. The feasibility and performance of a large-size Nb3Sn conductor operating at about 82 kA in a 13 T field has been proven in the past. Another key technology to be demonstrated for a layer-wound TF coil, is that of a joint between two different conductor grades, to be possibly manufactured in-line during winding. The proposed joint solution would provide the minimum room occupancy, with the joint embedded within the winding pack volume. A joint between two low-field conductor grades, i.e., constituted of a small number of superconducting strands and a high number of stabilization copper wires, has been designed and manufactured. The two conductor lengths are characterized by a different number of superconducting wires and different outer dimensions. A joint sample has been assembled and instrumented, in the configuration allowing testing at the SULTAN facility of the Swiss Plasma Center. Both DC and AC performance of the joint has been characterized at the DEMO TF operating conditions. The present paper reports the main manufacturing steps for the joint and its main test results. The implications on the performance and design approach of the TF coil are also discussed, based on the outcome of such tests. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|