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A group of Chinese researchers conducted an experiment called the "Chinese Artificial Sun" using the Tokamak (EAST) advanced experimental superconducting fusion device. The EAST device is conducting a four month experiment to see how hot the electron temperature is in the fuser. Scientists were able to achieve an electron core temperature of more than 100 million degrees.
The experiment has made progress on China's roadmap for tokamak fusion energy. Catching with all fusion energy production experiments right now is that no one has ever produced net energy gains so far. The EAST team used four types of heating energy in their experiment, such as lower hybrid wave heating, electron beam wave heating, ion beam resonance heating and infrared beam beam heating.
The power injection in the experiment exceeded 10MW and the stored plasma energy was amplified to 300 kJ after the team optimized the coupling of the various heating techniques together with the use of an advanced plasma control and predictive theory / simulation. Experiments on plasma balance and instability along with constraint and transport, plasma-wall interaction and energy particle physics have been demonstrated.
The team says that they were able to achieve a fully non-inductive steady-state scenario with increased restriction factor, high density, and increased energy concentration during the tests. A key to this experiment was the team's work on particle solving and exhausting, which says it is critical for high-performance steady-state operation.
The results of these tests have provided scientists with basic data on the validation of heat exhaust, transport and current-flow models. Researchers are focusing on optimizing the third-wave fusion engine with greater 7m radium, 2m minor radium, ring magnet field at 6.5-7 Tesla, and 13MA plasma stream. A US-based team is currently working on new magnets that believe they could help increase power output in the fusion experiment.
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