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EAST (Experimental Advanced Superconducting Tokamak)

node · earth · Anhui

EAST is a superconducting tokamak at the Institute of Plasma Physics of the Chinese Academy of Sciences in Hefei, Anhui province. Its purpose is long-pulse operation: holding a high-confinement, or H-mode, plasma steady for the timescales a power plant would need. On 20 January 2025 it sustained a steady-state high-confinement plasma for 1,066 seconds, breaking its own 2023 record of 403 seconds. The result is a confinement-duration result, not an energy result: EAST does not burn deuterium-tritium and produces no meaningful fusion power. It is included because duty cycle is one of the engineering gaps between a physics demonstration and a power station, and EAST is the clearest public marker of progress on it.

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Assembled from 23 blocks · 1 evidence · 24 related

  1. Story
  2. EAST is a superconducting tokamak at the Institute of Plasma Physics of the Chinese Academy of Sciences in Hefei, Anhui province. Its purpose is long-pulse operation: holding a high-confinement, or H-mode, plasma steady for the timescales a power plant would need. On 20 January 2025 it sustained a steady-state high-confinement plasma for 1,066 seconds, breaking its own 2023 record of 403 seconds. The result is a confinement-duration result, not an energy result: EAST does not burn deuterium-tritium and produces no meaningful fusion power. It is included because duty cycle is one of the engineering gaps between a physics demonstration and a power station, and EAST is the clearest public marker of progress on it.
  3. Knowledge
  4. Tokamak (toroidal magnetic confinement)
  5. EAST (Experimental Advanced Superconducting Tokamak)
  6. Connections
  7. Tokamak (toroidal magnetic confinement)
  8. EAST sustains a high-confinement plasma for 1,066 seconds
  9. Fusion triple product (n·T·τ_E)
  10. Tritium
  11. Deuterium
  12. Stellarator
  13. ITER
  14. Joint European Torus (JET)
  15. EAST (Experimental Advanced Superconducting Tokamak)
  16. JET's DTE1 campaign sets the first deuterium-tritium fusion power record
  17. JET's DTE2 campaign releases 59 MJ in a single pulse
  18. JET sets the single-pulse fusion energy record of 69.26 MJ
  19. ITER presents an updated project baseline to the ITER Council
  20. EAST sustains a high-confinement plasma for 1,066 seconds
  21. Commonwealth Fusion Systems' declared target for net energy gain at SPARC
  22. Evidence
  23. Long-pulse steady-state high-confinement operation has advanced from hundreds to over a thousand seconds, which bears on duty cycle rather than on energy gain
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