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.
