Paper | Title | Page |
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TUPB053 | Research on MgB2 at LANL for the Application to SRF Structures | 700 |
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Funding: U.S. Department of Energy (DOE) Office of Science Office of Nuclear Physics Early Career Research Program This paper is focused on the development of MgB2 coating technique at LANL. Using boron film samples obtained at a large furnace system, we succeeded in obtaining superconducting MgB2 films (Tc of up to 37 K so far) by reacting them with Mg vapor. The major improvements were 1) confinement of the Mg vapor in a hot zone to mitigate the insufficient Mg pressure due to condensation on low temperature surfaces of the connected vacuum pipes and 2) reduction of cooldown time, i.e., ~13 minutes instead of ~1 day with the large system to prevent MgB2 from decomposing. |
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