Siwoo Yoon — Biographical Profile
Primary Academic Discipline: Experimental Plasma Physics|Active Research Era: Contemporary
Vice President of KFE and KSTAR Principal Investigator; led KSTAR to 100 million-degree ion temperature records and pioneered 3D field ELM suppression techniques.
- Korea Institute of Fusion Energy (KFE)
- KSTAR
Academic Career & Impact on Plasma Physics
Siwoo Yoon is the Vice President of the Korea Institute of Fusion Energy (KFE) and a central figure in the success of the Korea Superconducting Tokamak Advanced Research (KSTAR) facility — often called the "Korean artificial sun." Under his guidance, KSTAR has repeatedly broken world records, including sustaining ultra-high ion temperatures above 100 million degrees Celsius in steady state. Yoon represents South Korea at IAEA World Fusion Energy Group ministerial meetings. His research focuses on 3D magnetic field physics, edge-localized-mode (ELM) control, and the transition of plasmas into hybrid and steady-state operation — work now considered vital for avoiding catastrophic disruptions in commercial reactors.
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