Patel, DipakAl Hossain, Md ShahriarMaeda, MinoruShahabuddin, MohammedYanmaz, EkremPradhan, SubrataTomsic, Mike2024-09-112024-09-1120160953-20481361-6668https://doi.org/10.1088/0953-2048/29/9/095001https://hdl.handle.net/11363/7829We report a new approach to a superconducting joining process for unreacted in situ carbon (C)-doped magnesium diboride (MgB2) wires. To operate a magnetic resonance imaging (MRI) magnet in the persistent mode, the superconducting joints between two conductors are as critical as the other key components. In addition, a stable and reliable joining process enables the superconducting magnet to operate without an external power supply. However, joint results using unreacted in situ C-doped MgB2 wires, which are used for high-field operation, have been limited, and only very poor performance has been obtained. By controlling the pressure inside a joint part, in this study, we successfully obtained current carrying retention in the joint of up to 72% compared to wire without a joint. The closedcircuit resistance of our closed-loop coil was less than 1.8 x 10(-13) Omega at 16.7 +/- 4.7 K, as measured by the field-decay measurement method. These results indicate that MgB2 has a promising future in MRI application.eninfo:eu-repo/semantics/closedAccessC-doped MgB2 wiresuperconducting jointspersistent-mode magnetsMRI applicationfield-decay measurementArticle29910.1088/0953-2048/29/9/0950012-s2.0-84985918221WOS:000383983500009Q2