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World’s Largest Nuclear Fusion Reactor "JT-60SA" Inaugurated in Japan.

Science & Technology | Dated: 03 Dec 2025

The world's largest and most advanced experimental nuclear fusion reactor, "JT-60SA", has been officially inaugurated in Japan's Ibaraki Prefecture. It is a joint initiative between the European Union (EU) and Japan. The reactor aims to replicate the energy of the sun to provide a clean, safe, and carbon-free energy source.

🎯 Key Highlights:

  • The six-story-high machine uses a doughnut-shaped "tokamak" vessel to contain swirling plasma heated to 200 million degrees Celsius.
  • JT-60SA is a precursor to the International Thermonuclear Experimental Reactor (ITER), currently under construction in France.
  • Fusion differs from fission (used in current nuclear plants) as it fuses atoms together rather than splitting them, producing no long-lived radioactive waste.

💡 Other Important Facts:

  • Reactor: JT-60SA.
  • Location: Ibaraki, Japan.
  • Partners: Japan and European Union.

📚 Test Your Knowledge:

Which country inaugurated the world's largest experimental nuclear fusion reactor "JT-60SA"?

Correct Answer: Japan

🚀 Quick Recap:

About Japan

  • Capital – Tokyo
  • Currency – Yen