France's WEST Tokamak reactor maintained a plasma reaction for over 22 minutes, setting a new record.

The milestone was achieved on February 12, 2025, at the Commissariat à l'énergie atomique et aux énergies alternatives (CEA).

The plasma in the WEST reactor reached a temperature of 50 million degrees Celsius.

The WEST Tokamak reactor's reaction duration of 1,337 seconds surpassed China's previous record of 1,066 seconds set in January 2025.

The information gathered from the WEST reactor will be used to improve future fusion projects, including the International Thermonuclear Experimental Reactor (ITER).