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JET's DTE1 campaign sets the first deuterium-tritium fusion power record

In its first full deuterium-tritium campaign, JET reached a peak fusion power of 16.1 MW and produced 22 MJ of fusion energy in a single pulse of about six seconds, with roughly 675 MJ of fusion energy produced across the whole campaign. The ratio of fusion power to input heating power is commonly quoted at Q ≈ 0.62, with 0.67 also reported; both refer to a transient peak, and quasi-steady values were lower. JET consumed considerably more energy than it released, and produced no electricity.

Historical — it happened, and the record is settled.

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Evidence

Partly verified — Core facts are sourced; some optional detail is deliberately absent.

Recorded on Joint European Torus (JET)

  1. JET's DTE1 campaign sets the first deuterium-tritium fusion power record
  2. JET's DTE2 campaign releases 59 MJ in a single pulse
  3. NIF achieves target gain greater than unity for the first time
  4. JET ceases plasma operations after 105,842 pulses
  5. NIF repeats target gain and raises the yield to 3.88 MJ
  6. JET sets the single-pulse fusion energy record of 69.26 MJ
  7. ITER presents an updated project baseline to the ITER Council
  8. NIF achieves ignition for the sixth time
  9. EAST sustains a high-confinement plasma for 1,066 seconds
  10. NIF reaches 8.6 MJ yield and a target gain of 4.13
  11. Commonwealth Fusion Systems' declared target for net energy gain at SPARC
  12. ITER's declared target date for the start of deuterium-tritium operation

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