| [](https://en.wikipedia.org/wiki/File:ITER_Logo_NoonYellow.svg) | | [](https://en.wikipedia.org/wiki/File:ITER_participants.svg) Participating members as of 2021 (partners not shown) | | Formation | 24 October 2007; 18 years ago (2007-10-24) | | Headquarters | Saint-Paul-lès-Durance, France | | Members | - China - European Union - India - Japan - South Korea - Russia - United States - Partners: Australia - Canada - Kazakhstan - Thailand | | Director-General | Pietro Barabaschi | | Website | iter.org |

| [](https://en.wikipedia.org/wiki/File:ITER_Exhibit_(01810402)_(12219071813)_(cropped).jpg) Small-scale model of ITER | | Device type | Tokamak | | Location | Saint-Paul-lès-Durance, France | | Technical specifications | | Major radius | 6.2 m (20 ft) | | Plasma volume | 840 m3 | | Magnetic field | 11.8 T "Tesla (unit)") (peak toroidal field on coil) 5.3 T "Tesla (unit)") (toroidal field on axis) 6 T "Tesla (unit)") (peak poloidal field on coil) | | Heating power | 320 MW (electrical input) 50 MW (thermal absorbed) | | Fusion power | 0 MW (electrical generation) 500 MW (thermal from fusion) | | Discharge duration | Up to 1,000 seconds | | History | | Date(s) of construction | 2013–2034 |

**ITER** (originally an acronym for **International Thermonuclear Experimental Reactor**, and also meaning "the way" or "the path" in Latin)[\[1\]](https://en.wikipedia.org/wiki/ITER#cite_note-1)[\[2\]](https://en.wikipedia.org/wiki/ITER#cite_note-2)[\[3\]](https://en.wikipedia.org/wiki/ITER#cite_note-3) is an international nuclear fusion research and engineering project designed to demonstrate the feasibility of fusion power. The facility is under construction near the Cadarache research center in southern France.[\[4\]](https://en.wikipedia.org/wiki/ITER#cite_note-4)[\[5\]](https://en.wikipedia.org/wiki/ITER#cite_note-Claessens-2020-5) ITER has been under construction since 2013. It is expected to achieve first plasma in 2033–2034,[\[6\]](https://en.wikipedia.org/wiki/ITER#cite_note-ITER-2024-6)[\[7\]](https://en.wikipedia.org/wiki/ITER#cite_note-auto-7) at which point it will be the world's largest fusion reactor, with a plasma volume about six times that of Japan's JT-60SA, previously the largest…