Abstract
This paper reports on the relaxation of a trapped magnetic field in aMgB2 solenoid coil in persistent current (PC) mode operation. For thePC mode test, we fabricated a closed-loop circuit with a smallMgB2 test coil, a persistent current switch (PCS) and some superconducting joints. TheMgB2 testcoil was fabricated using a wind-and-react method employing a 96 m long powder-in-tube processedMgB2 wire. Thecritical current Ic of the coil reached 88 A at 4.2 K without an external field. The resistance of the fabricated joints between theMgB2 and NbTi conductors(MgB2–NbTi) was estimatedto be less than 1.0 × 10−13 Ω. In PC mode with a closed-loop circuit, a magnetic field of 0.68 T wastrapped for more than 8 h. These results demonstrate the possible use of theMgB2 conductor for applications in fields such as MRI and NMR superconducting magnets.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
