China hits new fusion milestone: one minute in H-mode | SCMP

Martian

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Step by step, China is marching forward in developing fusion. The latest milestone was achieved in August at China's Experimental Advanced Superconducting Tokamak (EAST).

Chinese scientists with the assistance of American scientists were able to tame the plasma into a steady flow, instead of turbulent flow.
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China one step closer to harnessing clean, limitless energy from nuclear fusion | South China Morning Post

“Professor Luo Guangnan, deputy director of the Experimental Advanced Superconducting Tokamak (EAST) facility in Anhui’s provincial capital said some previous fusion experiments had lasted for more than 100 seconds, but they were like 'like riding a bucking bronco', with plasma that was volatile and difficult to control.

However, the experiment conducted at EAST in August was more like a dressage event, with the plasma tamed in a high-performance steady state, known as H-mode, in a donut-shaped chamber shielded by a extremely strong electromagnetic field.

'It is a milestone event, a confidence boost for humanity to harness energy from fusion,' Luo told the South China Morning Post.

Physicists view H-mode as an optimal working scenario for a future fusion power plant, and the one-minute breakthrough owed a great deal to the Chinese government’s heavy investment on fusion research in recent years.
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'China is the only nation in the world increasing its budget for fusion research,' he said. 'The funding in Europe has been dwindling, a proposal for the construction of new research facilities in the US was rejected by Congress, and progress in Japan has also stagnated.'

The one-minute H-mode breakthrough at EAST was made possible by financial support from the central government, which allowed the EAST team to undertake a series of major upgrades in the past few years.
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Many American researchers were involved in EAST’s one-minute H-mode experiment.

'In each of our experiments in recent years, the number of foreign participants easily exceeded 100,' Luo said, acknowledging that the progress in China would not have been so fast without a collective effort by international community."




"The donut-shaped chamber at the Experimental Advanced Superconducting Tokamak (EAST) in Hefei. Photo: Chinese Academy of Sciences"


"An experiment conducted at the Experimental Advanced Superconducting Tokamak in January. Photo: Chinese Academy of Sciences"
Notice the temperature of 50 million degrees.
 
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