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영구전류모드 운전을 위한 coated conductor의 가공 및 자석 제조
이희균,김재근,이선왕,김우석,이승욱,최경달,홍계원,고태국,Lee, Hee-Gyoun,Kim, Jae-Geun,Lee, Sun-Wang,Kim, Woo-Seok,Lee, Seung-Wook,Choi, Kyung-Dal,Hong, Gye-Won,Ko, Tae-Kuk 한국초전도학회 2006 Progress in superconductivity Vol.7 No.2
Coated conductors suitable for the fabrication of persistent mode high $T_c$ magnets are suggested and the fabrication method of persistent mode magnets using coated conductor are demonstrated. Persistent current was observed in a small piece of coated conductor. Closed loop of coated conductor with a diameter of around 1 em was successfully prepared and was cooled with a magnetic field of about 500 Gauss in order to induce supercurrent. Coated conductor with a $I_c$ of 100 A/cm-width was used for the preparation of closed loop of coated conductor. Persistent current was confirmed by measuring the magnetic field generated from closed loop of coated conductor by using Gauss meter. Magnetic field of 4.4 Gauss was detected from the supercurrent of closed loop of coated conductor. It shows that superconducting joint of coated conductor is not a prerequisite for the construction of persistent mode magnets. It is thought that this work opens the possibility to use coated conductor for the construction of persistent mode high $T_c$ magnets for MRI, NMR and magnetic separation applications.