caa a22 4500 445380802 CHVBK 20180317143016.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10948-010-0871-0 doi (NATIONALLICENCE)springer-10.1007/s10948-010-0871-0 Cryogen-Free 23 T Superconducting Magnet Employing anYBa2Cu3O7 Coated Conductor Insert [Elektronische Daten] [K. Watanabe, S. Awaji, G. Nishijima, S. Hanai] We have successfully constructed an 18.1T superconducting magnet conductively cooled by a GM/JT cryocooler. The double-pancake insert using Ag-sheathed Bi2Sr2Ca2Cu3O10 (Bi2223) tape with stainless steel reinforcement tape generated 2.5T in a 15.6T background magnet. In order to develop a cryogen-free high-field superconducting magnet producing over 20T, an YBa2Cu3O7 (Y123) coated conductor insert is intended for upgrading the cryogen-free 18T superconducting magnet. The Bi2223 insert, whose size is 176mm outer diameter, 90mm inner diameter, and 252mm coil height, is now excited at 162A operation current, and will be replaced by a new Y123 insert. We have already confirmed excellent mechanical properties of 1000MPa hoop stress tolerance for Y123 coated conductor tape with Hastelloy substrate. This means that we no longer need stainless steel reinforcement for the insert. As a result, an Y123 insert with almost the same size as the Bi2223 insert is designed to generate 7.5T at 187A, because the number of turns can be improved extremely. Acryogen-free 23T superconducting magnet can sufficiently be developed for a long-term experiment at a constant high magnetic field. Springer Science+Business Media, LLC, 2010 Watanabe K. High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University, 980-8577, Sendai, Japan aut Awaji S. High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University, 980-8577, Sendai, Japan aut Nishijima G. High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University, 980-8577, Sendai, Japan aut Hanai S. Toshiba Corporation, 230-0045, Yokohama, Japan aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 993-997 1557-1939 24:1-2<993 2011 24 10948 https://doi.org/10.1007/s10948-010-0871-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-010-0871-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Watanabe K. High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University, 980-8577, Sendai, Japan aut NATIONALLICENCE 700 1- Awaji S. High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University, 980-8577, Sendai, Japan aut NATIONALLICENCE 700 1- Nishijima G. High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University, 980-8577, Sendai, Japan aut NATIONALLICENCE 700 1- Hanai S. Toshiba Corporation, 230-0045, Yokohama, Japan aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 993-997 1557-1939 24:1-2<993 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer