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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Researchers use one-of-a-kind expertise and capabilities to test fuels of tomorrow
At the Idaho National Laboratory Hot Fuel Examination Facility, containment box operator Jake Maupin moves a manipulator arm into position around a pencil-thin nuclear fuel rod. He is preparing for a procedure that he and his colleagues have practiced repeatedly in anticipation of this moment in the hot cell.
R. J. Colchin
Fusion Science and Technology | Volume 29 | Number 3 | May 1996 | Pages 365-371
Technical Paper | Magnet System | doi.org/10.13182/FST96-A30722
Articles are hosted by Taylor and Francis Online.
START, a low-aspect-ratio tokamak located at Culham Laboratory in England, has a central copper rod that carries the whole of the toroidal field current. A small ohmic heating (OH) solenoid is wound around this central rod. The OH-driven currents in the solenoid are opposed by eddy currents in the copper rod, decreasing the volt-seconds available to drive plasma current. These eddy currents were measured and were modeled by a Laplace-transformed cylindrical heat equation. Slots in the central rod inhibit the eddy currents, increasing the effective poloidal resistance of the rod.
