logo Google Scholar

[2026]

  • G. Kim, J. Park, W. Jung, H. Park, Y. Yan, J. Kim, H. Yang, M. Ahn, J. Bang, G. Hahn, S. Choi, H. Kang, and S. Hahn, “Field uniformity enhancement in a prototype high-temperature superconducting dipole magnet,” Sci. Rep., vol. 16, 2026, Art. no. 3589
  • A. Musso, J. T. Lee, Y. Yan, J. Bang, N. Riva, C. Im, G. Kim, M. Bocchi, G. Angeli, and S. Hahn, “Preliminary Experimental Investigation of Graded Insulation on the Performance of HTS Pancake Coils,” IEEE Trans. Appl. Supercond., vol. 36, no. 3, 2026, Art. no. 4605207.
  • J. T. Lee, G. Kim, H. Park, J. Park, C. Im, W. Jang, J. Kim, and S. Hahn, “Stochastic Analysis on the Factors Affecting Critical Current and Index Value of Multi-Tape Co-Wound NI HTS Coil,” IEEE Trans. Appl. Supercond., vol. 36, no. 3, 2026, Art. no. 4604505.
  • C. Im, J. Yoon, W. Jang, G. Kim, H. S. Noh, J. Koo, H. Park, W. Jung, J. Kim, S. Yoon, H. Lee, S. Hahn, and S. Lee, “Study on Mechanical Movements of HTS Coils Due to Winding and Thermal Effect,” IEEE Trans. Appl. Supercond., vol. 36, no. 3, 2026, Art. no. 4901105.
  • H. Park, J. Kim, J. Cha, J. Koo, S. Lee, G. Berthet, Y. Kim, W. Jung, G. Kim, S. Yoon, H. Lee, S. Hahn, and S. Lee, “Design, Construction, and Experiment of Roller Shaped High-Temperature Superconducting Coil Joint Apparatus,” IEEE Trans. Appl. Supercond., vol. 36, no. 3, 2026, Art. no. 4602905.

[2025]

  • G. Kim, H. Park, W. Jang, J. Yoon, J. Park, C. Im, J. Kim, and S. Hahn, “Experimental Study on No-insulation HTS Coil with Solder-free Lap Joint Inserted,” IEEE Trans. Appl. Supercond., vol. 35, no. 5, 2025, Art. no. 4605205.
  • G. Kim, N. Riva, S. Cho, D. Lee, W. Jang, H. Park, C. Im, J. T. Lee, Y. Yan, J. Kim, J. Bang, W. Guo, N. Foppiani, S. Hahn, and S. Lee, “Numerical Study of Screening Current on HTS Stellarator Coil and Experimental Validation through Screening Current Induced Voltage,” IEEE Trans. Appl. Supercond., vol. 35, no. 5, 2025, Art. no. 4605105.
  • H. Jin, J. Ko, K. Nam, S. Shin, J. Lee, J. Kim, G. Jang, G. Kim, J. Park, and S. Hahn, “A study on beam optics and photon beam characteristics with a superbend in the Korea-4GSR,” J. Korean Phys. Soc., 2025, 1-9.
  • H. Park, G. Kim, J. Kim, C. Im, J. Park, W. Lee, W. Jang, G. Berthet, J. Cha, Y. Yan, W. Jung, and S. Hahn, “Experimental Study on Temperature-controlled Charging Sequence for Reduction of Screening Current Effect in HTS Magnet,” IEEE Trans. Appl. Supercond., vol. 35, no. 5, 2025, Art. no. 4606205
  • W. Jang, J. Kim, G. Kim, C. Im, S. Choi, J. H. Kim, J. H. Choi, D. G. Lee, S. Hahn, and S. Lee, “Design, Construction, and Operational Testing of Dry Wound Conduction Cooled React-and-Wind MgB2 Magnet,” IEEE Trans. Appl. Supercond., vol. 35, no. 5, 2025, Art. no. 4606705
  • J. Cha, G. Kim, C. Im, J. Yoon, J. Koo, and S. Hahn, “Post-Quench Analysis and Mechanical Considerations for No-Insulation HTS Racetrack Field Coils in a 5 MW Superconducting Motor,” IEEE Trans. Appl. Supercond., vol. 35, no. 5, 2025, Art. no. 5202905
  • J. T. Lee, J. Kim, H. Park, J. Yoon, J. Cha, J. Koo, W. Jung, G. Kim, C. Im, Y. Yan, S. Oh, and S. Hahn, “Experimental and Numerical Analysis on Non-Uniform Current Distribution in Two-Tape Co-Wound HTS Coil,” IEEE Trans. Appl. Supercond., vol. 35, no. 5, 2025, Art. no. 4602605
  • J. Park, Y. Yan, J. Kim, G. Kim, J. Yoon, W. Jang, and S. Hahn, “Numerical Study on Effect of Boundary Conditions and Winding Compressibility on Screening Current Induced Stress,” IEEE Trans. Appl. Supercond., vol. 35, no. 5, 2025, Art. no. 4801805
  • W. Jung, K. Choi, H. Park, G. Kim, J. Park, D. Lee, J. T. Lee, and S. Hahn, “Potential Joint Damage in a REBCO MRI Magnet due to the Gradient Coil-Induced Vibration,” IEEE Trans. Appl. Supercond., vol. 35, no. 5, 2025, Art. no. 4400505
  • D. Lee, J. Kim, W. Jang, G. Kim, H. Park, J. T. Lee, J. Park, J. Yoon, C. Im, W. Jung, G. Berthet, Y. Yan, M. K. Sun, H. Lee, S. Hahn, and S. Lee, “Experimental Study on Shrink-Fitted REBCO Pancake Coils,” IEEE Trans. Appl. Supercond., vol. 35, no. 5, 2025, Art. no. 4601705
  • W. Jang, L. Giannini, R. Bonifetto, J. T. Lee, K. Choi, G. Kim, Y. Yan, M. De Bastiani, A. Zappatore, S. Hahn, L. Muzzi, and V. Corato, “Feasibility Analysis of Partially Insulated Nb3Sn EU DEMO Toroidal Field Coil,” Supercond. Sci. Technol., vol. 38, no. 3, 2025, Art. no. 035003

[2024]

  • G. Kim, H. Park, C. Im, J. Park, J. Koo, W. Jung, J. T. Lee, W. Jang, J. Cha, Y. Yan, J. Kim, J. Bang, G. Hahn, S. Choi, H. Kang, and S. Hahn, “Distributed-Circuit Method for Replication of Fast-Ramping of Saddle-Shaped REBCO Dipole Magnet Wound With Two-Tape Bundled Conductor,” IEEE Trans. Appl. Supercond., vol. 34, no. 5, 2024, Art. no. 4000405.
  • G. Kim, W. Jung, J. Koo, J. Park, H. Park, J. Cha, J. T. Lee, W. Jang, S. H. Park, Y. Yan, J. Kim, J. Bang, G. Hahn, S. Choi, H. Kang, S. Hahn, and S. Lee, “Experimental Study for Modified Lumped-Circuit Model to Analyze Saddle-Shaped No-Insulation HTS Coil Operated in Overcurrent Situation,” IEEE Trans. Appl. Supercond., vol. 34, no. 5, 2024, Art. no. 4600905.
  • Y. Yan, J. Park, G. Kim, J. Kim, F. Gömöry, and S. Hahn, “Effects of lateral critical current nonuniformity on stresses in dry-wound high-field REBCO coils,” Supercond. Sci. Technol., vol. 37, no. 12, 2024, Art. no. 125015.
  • K. Koo, C. Im, G. Kim, J. Kim, S. Hahn, and S. Lee, “Design, Construction, and Operation of Liquid Nitrogen Cooled MHD Miniature Ship with No-insulation High Temperature Superconductor Magnet,” IEEE Trans. Transp. Electrif., vol. 10, no. 4, p. 7774-7784, 2024
  • W. Jang, J. Kim, G. Kim, H. Park, S. Choi, J. H. Kim, J. H. Choi, D. G. Lee, S. Hahn, and S. Lee, “Conceptual Design of 1-T/360-mm Dry Wound Conduction Cooled MgB2 Magnet for Long Term Operation,” IEEE Trans. Appl. Supercond., vol. 34, no. 5, 2024, Art. no. 4903905.
  • C. Im, J. Ham, J. Maeng, G. Kim, S. H. Park, J. Kim, J. Lee, G. Park, J. T. Lee, K. Choi, U. Bong, S. Cui, S. Hahn, and S. Lee, “Nonlinear Characteristics of Metal-insulated REBCO Magnet Under Various Switching Frequencies of Half-bridge Inverter Circuit,” IEEE Trans. Appl. Supercond., vol. 34, no. 5, 2024, Art. no. 4604906.
  • H. Park, G. Kim, K. Choi, J. Park, S. Choi, K. Sim, and S. Hahn, “Design and Performance Analysis of Gradient Coil for High-Field HTS REBCO MRI Magnet,” IEEE Trans. Appl. Supercond., vol. 34, no. 5, 2024, Art. no. 4402705.
  • J. T. Lee, K. Choi, G. Kim, J. Kim, C. Im, U. Bong, J. Bang, and S. Hahn, “Quench Test and Analysis on D-Shaped No-Insulation High Temperature Superconductor Single Pancake Coil,” IEEE Trans. Appl. Supercond., vol. 34, no. 5, 2024, Art. no. 4603605.
  • W. Song, J. Park, G. Kim, H. Park, S. Kim, T. Ha, S. Hahn, S. Choi, H. Kang, G. Yun, and G. Hahn, “A Case Study of Advanced Ramp-up Profile for HTS Magnet Based Carbon Therapy Synchrotron,” IEEE Trans. Appl. Supercond., vol. 34, no. 5, 2024, Art. no. 4402404.
  • Y. Yan, J. Park, J. Kim, U. Bong, G. Kim, W. Jang, and S. Hahn, “Electromagnetic-mechanical Simulation of High-field Test Coils and Conductor Degradation,” IEEE Trans. Appl. Supercond., vol. 34, no. 5, 2024, Art. no. 4602605.
  • S. H. Park, G. Choi, G. Kim, J. Jo, B. Lee, G. Kim, K. Park, Y.-H. Lee, and S. Hahn, “Characterization of broadband Purcell filters with compact footprint for fast multiplexed superconducting qubit readout,” Appl. Phys. Lett., vol. 124, 2024, Art. no. 044003.
  • S. Yang, W. Song, J. Park, G. Kim, J. Y. Huang, S. Hahn, S. Choi, H. Kang, and G. Hahn, “Development of a 5-Axis Winding Method for Saddle-Shaped Coils Using ReBCO Coated Conductorsusing Coated ReBCO High Temperature Superconductors,” IEEE Trans. Appl. Supercond., vol. 34, no. 5, 2024, Art. no. 4801304.

[2023]

  • G. Kim, J. Park, J. Bang, G. Hahn, S. H. Park, C. Im, H. Park, J. Kim, S. Choi, H. Kang, S. Hahn, and S. Lee, “Investigation on nonuniform current density and shape deformation affecting magnetic field performance of a saddle-shaped no-insulation HTS cosine-theta dipole magnet,” Supercond. Sci. Technol., vol. 36, no. 8, 2023, Art. no. 084002.
  • G. Kim, U. Bong, C. Im, J. Yoon, H. Park, J. Bang, C. Lee, J. Kim, and S. Hahn, “Analysis of Nonuniform Contact Resistivity Distribution on No-Insulation HTS Racetrack Coil,” IEEE Trans. Appl. Supercond., vol. 33, no. 5, 2023, Art. no. 4601305.
  • Y. Yan, J. Kim, U. Bong, W. Jang, G. Kim, J. Park, and S. Hahn, “Measurement and analysis of winding stresses in dry-wound pancake coils considering nonlinear compressive behaviors,” Supercond. Sci. Technol., vol. 36, no. 11, 2023, Art. no. 115019.
  • J. Bang, J. Park, K. Choi, G. Kim, and S. Hahn, “A numerical method to calculate screening current-dependent self and mutual inductances of REBCO coils,” Supercond. Sci. Technol., vol. 36, no. 8, 2023, Art. no. 085003.
  • B. Afif, S. Oh, M. Jeong, J. Park, W. Shin, U. Jo, R. Handito, J. Park, G. Kim, G. Hahn, S. Choi, S. Hahn, and H. Kang, “Degradation Characteristics of REBCO Tapes according to Electrical Breakdown,” IEEE Trans. Appl. Supercond., vol. 33, no. 5, 2023, Art. no. 8001005.
  • J. Bang, A. Musso, N. Riva, J. T. Lee, G. Kim, W. Jang, and S. Hahn, “Experiment and Analysis on Temperature-Dependent Electric Contact Resistivity of an NI HTS Coil,” IEEE Trans. Appl. Supercond., vol. 33, no. 5, 2023, Art. no. 6602105.
  • W. Jang, J. Bang, J. Kim, G. Kim, J. T. Lee, H. S. Noh, M. K. Sun, H. Lee, S. Hahn, and S. Lee, “An Experimental Study on Manipulation of Individual Coil Current in Parallel Connected HTS Pancake Coils,” IEEE Trans. Appl. Supercond., vol. 33, no. 5, 2023, Art. no. 4602105.
  • J. Park, G. Kim, G. Hahn, D. Kim, T. Ha, J. Bang, J. Kim, S. Shin, and S. Hahn, “Estimation of Screening Current Induced Field on Short Period Planar HTS Undulator,” IEEE Trans. Appl. Supercond., vol. 33, no. 5, 2023, Art. no. 4100505.
  • J. Y. Jang, Y. J. Hwang, J. Kim, S. Song, G. Kim, K. Choi, S. Hahn, M. Ahn, and S. Lee, “Experimental Study of a Room-Temperature Shimming Technology Employing Genetic Algorithm for NMR/MRI Superconducting Magnets,” IEEE Trans. Appl. Supercond., vol. 33, no. 5, 2023, Art. no. 4300705.
  • J. T. Lee, G. Kim, J. Kim, J. Bang, C. Im, W. Jang, K. Choi, M. Yoon, W.-S. Kim, and S. Hahn, “Experimental and Equivalent Circuit Analysis Approach to Estimate Contact Resistances on Different Sections in a D-shaped NI HTS Coil,” IEEE Trans. Appl. Supercond., vol. 33, no. 5, 2023, Art. no. 4603205.
  • H. Park, J. Park, G. Kim, K. Choi, J. Bang, and S. Hahn, “Computing the Non-Uniform Current Effects on the Magnetic Field in Sector Coil Dipoles,” IEEE Trans. Appl. Supercond., vol. 33, no. 5, 2023, Art. no. 4900705.
  • Q. Liu, Y. Kwon, J. Mun, J. Choi, K. Sim, G. Kim, S. Hahn, and S. Kim, “Thermal Analysis and In-Field Critical Current Estimation of Conduction-Cooled REBCO Magnet Considering Nonuniform Temperature Distribution,” IEEE Trans. Appl. Supercond., vol. 33, no. 5, 2023, Art. no. 8000405.
  • J. Choi, Q. Liu, C. Lee, J. Mun, J. Yoon, G. Kim, U. Bong, J. Kim, S. Hahn, K. Sim, and S. Kim, “Thermal Analysis of Leakage Currents of No-Insulation HTS Racetrack Coils Using a Three-Dimensional Turn-Distributed Equivalent Circuit FEA Model,” IEEE Trans. Appl. Supercond., vol. 33, no. 5, 2023, Art. no. 5201106.
  • W. Jung, G. Kim, K. Choi, H. Park, and S. Hahn, “Discretized solenoid design of a 1.5 T and a 3.0 T REBCO wholebody MRI magnets with cost comparison according to magnetic flux,” Prog. Supercond. Cryog., vol. 25, no. 4, p. 75-80, 2023.

[2022]

  • G. Kim, J. Bang, C. Im, K. Choi, U. Bong, J. T. Lee, and S. Hahn, “Fast Current Distribution Simulation Method for No-Insulation HTS Coil With Defects,” IEEE Trans. Appl. Supercond., vol. 32, no. 6, 2022, Art. no. 4602905.
  • G. Kim, S. H. Park, J. Bang, C. Im, J. Kim, J. Yoon, K. J. Han, S. Noguchi, and S. Hahn, “Experimental Study and Frequency Domain Analysis on Metal-Insulation HTS Coil,” IEEE Trans. Appl. Supercond., vol. 32, no. 4, 2022, Art. no. 4600505.
  • J. Bang, J. Kim, J. T. Lee, G. Kim, J. Park, S. H. Park, S. Noguchi, and S. Hahn, “A Customized Electric Heater to Mitigate Screening Current by Optimal Control on Temperature Distribution in a High-temperature Superconductor Coil,” J. Appl. Phys., vol. 132, no. 18, 2022, Art. no. 183911.
  • U. Bong, K. Choi, J. Kim, J. Bang, J. T. Lee, C. Im, J. Park, J. Yoon, G. Kim, H. Ku, W. Kang, and S. Hahn, “Design, construction, and operation of a 2 T 240 mm conduction cooled defect-irrelevant winding (RE) Ba2Cu3O7- x magnet,” Rev. Sci. Instrum., vol. 93, no. 7, 2022, Art. no. 073302.
  • J. Bang, S. H. Park, J. Park, G. Kim, J. T. Lee, K. Kim, S. Hahn, and D. C. Larbalestier, “A Real-Time Monitoring System for Investigating Electromagnetic Behaviors of an HTS Coil,” IEEE Trans. Appl. Supercond., vol. 32, no. 6, 2022, Art. no. 9001505.
  • J. T. Lee, J. Bang, G. Kim, J. Kim, J. Park, C. Im, W. S. Jang, H. W. Kim, Y. Ryu, H. Lee, S. Oh, and S. Hahn, “Test and Analysis of Laboratory-scale D-shaped Co-wound No-insulation HTS Single Pancake Coil for TF Coil Application,” IEEE Trans. Appl. Supercond., vol. 32, no. 6, 2022, Art. no. 4602605.
  • A. Musso, J. Bang, U. Bong, M. Breschi, C. Im, G. Kim, J. Kim, J. Park, and S. Hahn, “Analysis of a No-Insulation HTS pancake coil including multiple resistive joints,” IEEE Trans. Appl. Supercond., vol. 32, no. 6, 2022, Art. no. 4604505.
  • J. Bang, J. Park, S. H. Park, J. T. Lee, C. Im, G. Kim, and S. Hahn, “An HTS Magnet With Individually Controllable Coil Currents Energized by a Single Power Source,” IEEE Trans. Appl. Supercond., vol. 32, no. 4, 2022, Art. no. 4603005.

[2021]

  • G. Kim, A. Musso, J. Bang, J. T. Lee, C. Im, K. Choi, J. Kim, M. Breschi, K. J. Han, and S. Hahn, “A numerical method for spatially-distributed transient simulation to replicate nonlinear ‘defect-irrelevant’ behaviors of no-insulation HTS coil,” Supercond. Sci. Technol., vol. 34, no. 11, 2021, Art. no. 115004.
  • S. An, C. Im, J. Bang, J. Kim, U. Bong, J. T. Lee, G. Kim, K. J. Han, and S. Hahn, “Fast Distributed Simulation of “Defect-Irrelevant” Behaviors of No-Insulation HTS Coil,” IEEE Trans. Appl. Supercond., vol. 31, no. 5, 2021, Art. no. 4601605.
  • C. Im, G. Kim, J. Bang, K. Choi, S. An, K. J. Han, and S. Hahn, “Mesh Dependency on a Partial Element Equivalent Circuit Model for an NI HTS Coil” IEEE Trans. Appl. Supercond., vol. 31, no. 5, 2021, Art. no. 4901105.
  • K. Choi, U. Bong, J. Kim, J. Park, J. T. Lee, J. Bang, G. Kim, S-W Jung, and S. Hahn, “Upper Limit Estimation of Resistive Heating Made by No-Insulation HTS Magnet Having Defects,” IEEE Trans. Appl. Supercond., vol. 31, no. 5, 2021, Art. no. 4603005.
  • W. S. Jang, G. Kim, K. Choi, J. Park, J. Bang, and S. Hahn, “Electromagnetic design study of a 7 T 320 mm high-temperature superconducting MRI magnet with multi-width technique incorporated,” Prog. Supercond. Cryog., vol. 23, no. 4, p. 30-34, 2021.

[2020]

  • G. Kim, K. Choi, J. Park, U. Bong, J. Bang, and S. Hahn, “A simulation-based design study of superconductor zonal shim coil for a 9.4 T whole-body MRI magnet,” Prog. Supercond. Cryog., vol. 22, no. 1, p. 12-16, 2020.