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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Latest News
Russia withdraws from 25-year-old weapons-grade plutonium agreement
Russia’s lower house of Parliament, the State Duma, approved a measure to withdraw from a 25-year-old agreement with the United States to cut back on the leftover plutonium from Cold War–era nuclear weapons.
J. Mandrekas, W.M. Stacey, H. He
Fusion Science and Technology | Volume 19 | Number 3 | May 1991 | Pages 1307-1312
Result of Large Experiment and Plasma Engineering | doi.org/10.13182/FST91-A29522
Articles are hosted by Taylor and Francis Online.
Reference operating scenarios for the physics phase of the International Thermonuclear Experimental Reactor (ITER) rely on low temperature, high density operation for good divertor performance. Operating points in this region are usually thermally unstable, and active burn control is required in order to maintain the selected operating point. We present transport simulations of ITER burn control scenarios with modulated neutral beam heating, using the 1-1/2D transport code WHIST. Our results indicate that control is possible, except at high densities (≥ 1.75 × 1020 m−3) where off-axis heating due to the poor beam penetration makes control problematic, especially for negative perturbations.