Japan Completes Cryogenic Test of World's Largest Superconducting Toroidal Field Coil for ITER
Japan's National Institutes for Quantum Science and Technology (QST) and Toshiba Corporation announced on August 25 that they had successfully completed the first cryogenic current test of the world's largest superconducting toroidal field coil at the construction site of the International Thermonuclear Experimental Reactor (ITER). The test was conducted at an operating temperature of approximately minus 269 degrees Celsius, marking a critical technical milestone before ITER's commissioning. The superconducting toroidal field coil, also known as the TF coil, installed in the test facility is a key component of ITER's superconducting magnet system, used to generate the strong magnetic field required to confine plasma. During the test, the team cooled the coil from room temperature to cryogenic conditions, confirmed its transition to the superconducting state, and for the first time achieved stable conduction of 10,000 amperes of current while the coil was in the superconducting state.
2026-08-25
