EAST sustains a high-confinement plasma for 1,066 seconds
China's EAST tokamak in Hefei sustained a steady-state high-confinement (H-mode) plasma for 1,066 seconds at a reported ion temperature of order 100 million degrees Celsius, breaking its own 2023 record of 403 seconds. This is a confinement-duration result achieved without deuterium-tritium fuel; essentially no fusion energy was produced. Duty cycle is one of the engineering gaps between a physics result and a power station, and this is the clearest public marker of progress on it.
Observed — measured or witnessed, with the observation cited.
Subjects
- EAST (Experimental Advanced Superconducting Tokamak) · research facility · China · not located
- Tokamak (toroidal magnetic confinement) · confinement concept · not located
- Fusion triple product (n·T·τ_E) · physical condition · not located
Evidence
Partly verified — Core facts are sourced; some optional detail is deliberately absent.
Chinese 'artificial sun' sets new record in milestone step toward fusion power generation
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
Chinese Academy of Sciences (Institute of Plasma Physics, Hefei) · 2025-01-21 · Partly verified
CAS news release, english.cas.cn/newsroom/cas_media/202501/t20250121_899052.shtml; EAST sustained steady-state high-confinement plasma for 1,066 s on 20 January 2025, breaking its own 2023 record of 403 s
Recorded on EAST (Experimental Advanced Superconducting Tokamak)
- JET's DTE1 campaign sets the first deuterium-tritium fusion power record
- JET's DTE2 campaign releases 59 MJ in a single pulse
- NIF exceeds the Lawson criterion for ignition
- JET sets the single-pulse fusion energy record of 69.26 MJ
- ITER presents an updated project baseline to the ITER Council
- EAST sustains a high-confinement plasma for 1,066 seconds
- Wendelstein 7-X sets a triple product record for long-duration plasmas
- Commonwealth Fusion Systems' declared target for net energy gain at SPARC
Related
Related because they share a subject in the Atlas — never because the text looks similar.
- Wendelstein 7-X sets a triple product record for long-duration plasmas · 2025-05-22
- ITER presents an updated project baseline to the ITER Council · 2024-06-19
- Commonwealth Fusion Systems' declared target for net energy gain at SPARC · 2027
- JET sets the single-pulse fusion energy record of 69.26 MJ · 2023-10-03
- NIF exceeds the Lawson criterion for ignition · 2021-08-08
- JET's DTE2 campaign releases 59 MJ in a single pulse · 2021-12
- JET's DTE1 campaign sets the first deuterium-tritium fusion power record · 1997