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논문 기본 정보

자료유형
학술저널
저자정보
김명수 (Korea Basic Science Institute) 최연석 (Korea Basic Science Institute) 김동락 (Korea Basic Science Institute) 이윤아 (Korea Basic Science Institute)
저널정보
한국초전도학회 Progress in superconductivity Progress in superconductivity 제14권 제2호
발행연도
2012.1
수록면
122 - 127 (6page)

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초록· 키워드

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Current leads are one of the important components for carrying the current to the coil in the superconducting magnet system. Heat leakage through the current lead is the major factor of entire heat load in the cryogenic system because current leads carry the current from room temperature to near 4 K, connecting thermally each other. Therefore, minimization heat load through current lead can reduce the operating temperature of superconducting magnet. The semi-retractable current lead, composed of multi-contact connector and HTS element, is one of good options. Comprehension of Multi-contact connector's structure, contact resistance and heat generation is essential for estimating heat generation in current leads. Multi-contact connector has several louvers inside of socket and the shape, number, size of louvers are different with the size of connector. Therefore contact area, current path and contact resistance are also different. In this study, the contact resistance in multi-contact connector is measured using the electrical power as a function of connector's size and temperature. Also, the unique correlation of electrical contact resistance is derived and heat generation is estimated for superconducting magnet application.

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