Search Results - "Choi, Kibum"

Analytical methods to calculate electromagnetic stress of superconducting solenoid magnets by Park, Jeonghwan, Choi, Kibum, Yan, Yufan, Kim, Jaemin, Hahn, Seungyong

“…Compressive magnetic radial stress is favored, over tensile one, for a high field magnet, mainly because it lowers the overall peak magnetic stress within the…”
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A Feasibility Study on "Magnetic Dam" to Absorb Magnetic Energy in NI HTS Magnet During Quench by An, Soobin, Choi, Kibum, Noguchi, So, Im, Chaemin, Bang, Jeseok, Bong, Uijong, Kim, Jaemin, Hahn, Seungyong

“…When a quench occurs in a no-insulation (NI) high temperature superconductor (HTS) magnet that consists of a stack of double-pancake (DP) coils, a large amount…”
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Design and Performance Analysis of Gradient Coil for High-Field HTS REBCO MRI Magnet by Park, Hyunsoo, Kim, Geonyoung, Choi, Kibum, Park, Jeonghwan, Kim, Jaemin, Choi, Seyong, Sim, Kideok, Hahn, Seungyong

“…In this study, we designed gradient coils for a 6 T high-temperature superconducting (HTS) MRI magnet and analyzed their effects on the main magnet which was…”
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Minimum Volume Optimal Design Method of Hybrid MRI Magnet by Liu, Quanyue, Lee, Sangjin, Choi, Kibum, Hahn, Seungyong

“…The purpose of this paper is to present a minimum volume optimal design method of hybrid magnetic resonance imaging (MRI) magnet using field superposition. The…”
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Computing the Non-Uniform Current Effects on the Magnetic Field in Sector Coil Dipoles by Park, Hyunsoo, Park, Jeonghwan, Kim, Geonyoung, Choi, Kibum, Bang, Jeseok, Hahn, Seungyong

“…In this study, we extend the previous 'Segmentation method', which was originally suggested to calculate harmonic coefficients of solenoid magnets, to apply to…”
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Fast Current Distribution Simulation Method for No-Insulation HTS Coil With Defects by Kim, Geonyoung, Bang, Jeseok, Im, Chaemin, Choi, Kibum, Bong, Uijong, Lee, Jung Tae, Hahn, Seungyong

“…This paper presents a numerical method for fast simulation of current distribution in a no-insulation (NI) high temperature superconductor (HTS) coil with…”
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Quench Test and Analysis on D-Shaped No-Insulation High Temperature Superconductor Single Pancake Coil by Lee, Jung Tae, Choi, Kibum, Kim, Geonyoung, Kim, Jaemin, Im, Chaemin, Bong, Uijong, Bang, Jeseok, Hahn, Seungyong

“…No-insulation (NI) high temperature superconductor (HTS) magnets are indeed an innovative technology in various fields that require a high magnetic field. In…”
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Mesh Dependency on a Partial Element Equivalent Circuit Model for an NI HTS Coil by Im, Chaemin, Kim, Geonyoung, Bang, Jeseok, Choi, Kibum, An, Soobin, Han, Ki Jin, Hahn, Seungyong

“…In general, when evaluating a performance of a high-temperature superconductor (HTS) no-insulation (NI) magnet, current, voltage, and center magnetic field are…”
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Comparative Design Study of HTS Synchronous Motor With Inner and Outer Rotor Type Based on Multi-Objective Optimization by Jung, Seok-Won, Yoon, Jonghoon, Choi, Kibum, Bang, Jeseok, Bong, Uijong, Hahn, Seungyong

“…In this paper, we report a design comparison between the inner and the outer rotor type for a partial high temperature superconductor (HTS) synchronous motor…”
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Nonlinear Characteristics of Metal-Insulated REBCO Magnet Under Various Switching Frequencies of Half-Bridge Inverter Circuit by Im, Chaemin, Ham, Jisun, Maeng, Junyeol, Kim, Geonyoung, Park, Seong Hyeon, Kim, Jaemin, Lee, Jaekeun, Park, Gayoung, Lee, Jung Tae, Choi, Kibum, Bong, Uijong, Cui, Shenghui, Hahn, Seungyong, Lee, Sangjin

“…This paper presents the experiment and analysis on the control of current in Metal Insulation (MI) magnet using a DC power supply and power semiconductor…”
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Experimental Study of a Room-Temperature Shimming Technology Employing Genetic Algorithm for NMR/MRI Superconducting Magnets by Jang, Jae Young, Hwang, Young Jin, Kim, Jaemin, Song, Seunghyun, Kim, Geonyoung, Choi, Kibum, Hahn, Seungyong, Ahn, Minchul, Lee, SangGap

“…We present a recently developed shimming method that uses a system of room-temperature (RT) orthogonal shimming coils to improve the spatial field homogeneity…”
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Experimental and Equivalent Circuit Analysis Approach to Estimate Contact Resistances on Different Sections in a D-Shaped NI HTS Coil by Lee, Jung Tae, Kim, Geonyoung, Kim, Jaemin, Bang, Jeseok, Im, Chaemin, Jang, Wonseok, Choi, Kibum, Yoon, Miyeon, Kim, Woo-Seok, Hahn, Seungyong

“…With well-known self-protecting behaviors of no-insulation (NI) high temperature superconductor (HTS) coils, their performance was verified by numerous high…”
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Upper Limit Estimation of Resistive Heating Made by No-Insulation HTS Magnet Having Defects by Choi, Kibum, Bong, Uijong, Kim, Jaemin, Park, Jeonghwan, Lee, Jung Tae, Bang, Jeseok, Kim, Geonyoung, Jung, Seok-Won, Hahn, Seungyong

“…Seoul National University and Hanmi Techwin Inc. have launched a program for the development of a large bore, low field, and low-cost high temperature…”
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A Design Study on No-Insulation HTS Isochronous Cyclotron Magnet for Carbon Ion Therapy by Park, Jeonghwan, Hahn, Garam, Bang, Jeseok, Bong, Uijong, Choi, Kibum, Lee, Jung Tae, Hahn, Seungyong

“…Provided that a cyclotron system requires DC magnetic field, the no-insulation (NI) high temperature superconductor (HTS) magnet may be a good candidate as it…”
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A Numerical Method to Calculate Spatial Harmonic Coefficients of Magnetic Fields Generated by Screening Currents in an HTS Magnet by Bang, Jeseok, Lee, Jung Tae, Choi, Kibum, Park, Seong Hyeon, Bong, Uijong, An, Soobin, Im, Chaemin, Park, Jeonghwan, Kim, Jaemin, Bhattarai, Kabindra, Hahn, Seungyong

“…This paper presents a numerical method, named "Segmentation" method, to calculate spatial harmonic coefficients of magnetic fields generated by both transport…”
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Shape optimization of superconducting transmon qubit for low surface dielectric loss by Eun, Sungjun, Park, Seong Hyeon, Seo, Kyungsik, Choi, Kibum, Hahn, Seungyong

“…Surface dielectric loss of superconducting transmon qubit is believed as one of the dominant sources of decoherence. Reducing surface dielectric loss of…”
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