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Wendelstein 7-X Sets New Performance Records in Nuclear Fusion Research

  • On May 22, 2025, during the OP 2.3 experimental run, the Wendelstein 7-X fusion device in Greifswald, Germany, established a new record for plasma performance in magnetic confinement fusion.
  • This achievement followed deliberate reductions of the confining magnetic field and aiming to elevate plasma pressure, surpassing previous tokamak benchmarks like JET and JT-60U.
  • W7-X sustained a triple product record continuously for 43 seconds, increased energy turnover to 1.8 gigajoules over 360 seconds, and reached plasma pressure of 3% across the full volume.
  • Thomas Klinger, Head of Stellarator Dynamics, stated that achieving tokamak-comparable triple product values during extended plasma pulses represents a significant step forward in developing a stellarator capable of functioning as a fusion power plant.
  • These advances validate stellarators as a viable fusion path, suggesting international collaborations move fusion power plants closer to providing clean and limitless energy worldwide.
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The stellarator was long regarded as too complicated for practice. But Wendelstein 7-X defies all doubts: with new record values, the technical outsider could turn out to be a real hope. (Read more)

A German and a French startup want to build independently of each other until the beginning of the 2030 fusion reactors. Why they rely on a technology that has so far been neglected and how they want to implement their plans.read more on t3n.de

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Heise broke the news in Germany on Tuesday, June 3, 2025.
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