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논문 기본 정보

자료유형
학술저널
저자정보
Sukjin Choi (연세대학교) Young Jin Hwang (연세대학교) Tae Kuk Ko (연세대학교)
저널정보
한국자기학회 Journal of Magnetics Journal of Magnetics Vol.16 No.3
발행연도
2011.9
수록면
312 - 317 (6page)

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초록· 키워드

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NMR over 1 ㎓ (23.5 T) level has difficulties in design and fabrication with only low temperature superconducting (LTS) wire because of its material characteristics such as the decay of critical current under the magnetic field. Because High temperature superconducting (HTS) tape has a good performance under the extremely high magnetic field, it has been developed for high-field magnet over 23.5 T. In this paper, the LTS magnet was made for applying magnetic fields externally and the HTS coil was designed and fabricated. The electromagnetic field analysis has been done with respect to the structure and the operating current of the LTS and HTS coil. Considering to the field homogeneity and the center field, the design parameters which is suitable for the HTS coil were found. The HTS insert coil was impregnated with epoxy resin in order to prevent the movement of winding during energizing the magnet. The hybrid magnet (LTS/HTS) magnet was fabricated and tested based on the design parameters. The experimental result shows that the LTS background magnet and the HTS insert coil can be operated stable beyond 220 A and 210 A. The final value 4.32 T at the center was acquired.

목차

1. Introduction
2. Design and Fabrication
3. Preliminary Experiment and Joint
4. Experiment and Result
5. Conclusion
Acknowledgements
References

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