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The JT-60SA experiment has been officially recognized by Guinness World Records as the world's largest tokamak, as measured in terms of plasma volume.
On 4 September 2024 the device, built and exploited by Japan's National Institutes for Quantum and Radiological Science and Technology (QST) in conjunction with Europe's Fusion for Energy (F4E), achieved a plasma volume of 160 cubic metres, exceeding the previous world record of 100 cubic metres. A certification ceremony is planned on Saturday 19 October at the Naka Institute for Fusion Science and Technology.
JT-60SA has been designed to support the operation of ITER by following a complementary research and development program, and to investigate how best to optimize the operation of fusion power plants that are built after ITER. Further details of its experimental program are explained in the JT-60SA Research Plan.
At the Korea Institute of Fusion Energy (KFE), the KSTAR tokamak recommenced operations in December after a major upgrade to replace the…
KSTAR aims for longer plasmas
At the Korea Institute of Fusion Energy (KFE), the KSTAR tokamak recommenced operations in December after a major upgrade to replace the device's carbon divertor with a tungsten divertor.
According to an article on the KFE website, the original carbon divertors could take a thermal load of 5MW/m², whereas the tungsten divertor can take 10MW/m². The upgrade is critical to the goal of sustaining a 100-million-degree plasma for 300 seconds by 2026. Data from the operational campaign will be directly relevant to ITER, which will operate a tungsten divertor under similar plasma conditions in terms of shape and structure.
This testing campaign will continue through February 2024. Read more about the plans in this article in English on the KFE website, or in Korean in the Chosun Biz.