Tokamak reactor

Oxford-based UK tech firm Tokamak Energy has reached a milestone in privately-funded fusion research after its ST-40 spherical tokamak reactor reached a temperature of 100 million °C (180 million °F), the threshold for commercial fusion energy.

Good news for fusion energy progress and a new world record for the Chinese Academy of Sciences, as its Experimental Advanced Superconducting Tokamak (EAST), or "artifical sun," maintains 70 million degrees Celsius (126 million °F) for 1,056 seconds.

A popular design in the pursuit of fusion power is the tokamak and an exciting example of these donut-shaped reactors can be found at the Korea Institute of Fusion Energy, where a new record for maintaining super-hot plasma has reportedly been set.

Chinese state media is reporting that scientists working on the EAST experimental nuclear fusion reactor have achieved a new world record by holding plasma of 120 million degrees Celsius for 101 seconds in their latest round of experiments.

For nearly a century, scientists have been tantalized by the prospect of attaining an inexhaustible source of energy through nuclear fusion. Achieving this goal is not so easy, as it turns out, but that doesn't mean exciting advances aren't being made.

The structure that will house one of the largest and most ambitious energy experiments in history is now complete, with engineers working on the ITER Tokamak Building swinging their last pylon into place in readiness for the reactor's assembly stage.

Nuclear fusion could be an essentially unlimited energy source, but large eruptions in the plasma can damage reactors. But now physicists have found a way to prevent those large eruptions, by triggering lots of small ones through the injection of tiny pellets of beryllium.

A relatively new player on the nuclear fusion scene, a UK company called Tokamak Energy, is claiming a new milestone in the area after heating its ST40 device to 15 million degrees Celsius, similar to temperatures found at the center of the Sun.