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TY - CPAPER AU - Tajima, T. AU - Civale, L. AU - Schulze, R.K. TI - Research on MgB2 at LANL for the Application to SRF Structures J2 - Proc. of International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept. 13-18, 2015 AB - 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. PB - JACoW CY - Geneva, Switzerland SP - 700 EP - 702 KW - SRF KW - vacuum KW - superconductivity KW - status KW - electron DA - 2015/12 PY - 2015 SN - 978-3-95450-178-6 DO - 10.18429/JACoW-SRF2015-TUPB053 UR - http://srf2015.vrws.de/papers/tupb053.pdf ER -