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NASA NTRS · 20220010640

DC Performance Testing of MgB2 Superconducting Straight Wire Samples

Jason W Hartwig·Gerald V Brown·Benjamin B Choi·Frederick W Van Keuls·Christian Llanes·Christopher S Hall
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Abstract

To enable turboelectric aircraft that utilize fully superconducting motors and generators, testing of high-current, low-AC-loss superconducting wires and coils must be performed. A preliminary investigation was conducted on the critical current capabilityof a magnesium diboride sample and on the complications that arise from testing the sample with a cryocooler. While a cryocooler provides the benefit of a wide and continuous operating temperature range, cooling a sample by conduction through solid media without a heat-exchange gas is difficult. This paper outlines the hardware and software used to conduct the first DC performance tests on magnesium diboride superconducting samples, along with several check-out tests and mitigation steps needed to produce quality superconducting data using a cryocooler rather than a cryogen

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Jason W Hartwig, Gerald V Brown, Benjamin B Choi, Frederick W Van Keuls, Christian Llanes, Christopher S Hall. DC Performance Testing of MgB2 Superconducting Straight Wire Samples. https://ntrs.nasa.gov/citations/20220010640

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