1–6 Jul 2025
Omni Boston Hotel at the Seaport
US/Eastern timezone

Fri-Af-Po.06-01: Progress report and future plans for a 20 T, 50 mm room temperature bore high-homogeneity all-HTS magnet with conduction-cooled system

4 Jul 2025, 14:00
2h
Ensemble Ballroom, Level 2

Ensemble Ballroom, Level 2

Speaker

Dr Wooseung Lee (Korea Basic Science Institute)

Description

High-temperature superconductors (HTS) are indispensable for producing magnetic fields exceeding 20 T, a subject that has attracted substantial research efforts in recent years. This study aims to develop a conduction-cooled all-HTS magnet capable of generating a 20 T magnetic field with a 50 mm room temperature bore. The magnet has been designed to operate at a maximum temperature of 20 K using hybrid HTS tapes. To address mechanical and electrical challenges, the design incorporates a stainless steel co-winding approach to mitigate high stress while maintaining optimal turn-to-turn contact resistance. Additionally, a solderless joint method has been employed for connecting double pancake coils (DPCs), effectively eliminating corrosion issues caused by flux. So far, 8 out of the 18 DPCs required for the full magnet have been partially fabricated and tested, achieving a magnetic field of approximately 5.4 T. Moving forward, the remaining components will be integrated to complete the 20 T magnet.

This research was supported by National R&D Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science an ICT (2022M319A1072464).

Author

Dr Wooseung Lee (Korea Basic Science Institute)

Co-authors

Dr Yojong Choi (Korea Basic Science Institute) Hyunsoo ­Park (Seoul National University) Kibum Choi (Seoul National University) JuKyung ­Cha (Department of Electrical and Computer Engineering, Seoul National University, Seoul 08826, Korea) Dr Chaemin Im (Seoul National University) Dr Jaemin Kim (Standard Magnet Inc.) An Jin Nam (Standard Magnet Inc.) Hongmin Yang (Korea Basic Science Institute) Uijin Jeong (Korea Basic Science Institute) Dr Hankil Yeom (Korea Institute of Machinery and Materials) Prof. Minchul Ahn (Kunsan National University) Prof. Jae young Jang (Korea University of Technology & Education) Prof. Young Jin Hwang (Korea Maritime and Ocean University) Prof. Seungyong Hahn (Seoul National University) Dr SangGap Lee (Korea Basic Science Institute)

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