韓国における超電導応用研究

Abstract

Superconductivity research in Korea started in 1984, and the number of research groups engaged in high-Tc superconductor has greatly increased since 1986. Although superconductivity research has a short history, many attempts have been made to develop low-Tc superconducting machines and high-Tc superconducting devices. KERI has developed fabrication technology for superconducting wires and magnets since 1992. Accordingly, an active shielding-type MRI superconducting magnet was fabricated at 1996 and through collaboration with industry, KERI has attempted to produce 24 NbTi filament superconducting wires since 1992. EESRI and KEPCO developed a 0.5MJ SMES system and successfully conducted an energy transfer test between two NbTi coils in 1993. A superconducting current limiter has been under research at Yonse University since 1993. They manufactured a 220V/100A class superconducting current limiter in 1995 and have investigated applicability to power systems. On the other hand, the High-Temperature Superconductivity Research Association (HiTeSRA) was organized to promote the research of high-temperature superconductivity, and has taken the lead in the research activities for high-temperature superconductivity. KRISS and LG Electronics developed a directly coupled SQUID with single-layer YBCO thin film and successfully demonstrated MCG measurement using high-Tc SQUID magnetometers in 1996. ETRI has developed microwave superconducting coupled-line bandpass filters using YBCO thin film fabricated by laser ablation. Since 1995, a project for the development of a superconducting nuclear fusion device has been in progress. Such developments have led Korea to enter a new phase in the research of applied superconductivity.