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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Fusion Science and Technology
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.
V. E. Bykov, A. V. Georgievskij, V. V. Demchenko, Yu. K. Kuznetsov, Yu. A. Litvinenko, A. V. Longinov, O. S. Pavlichenko, V. A. Rudakov, K. N. Stepanov, V. T. Tolok
Fusion Science and Technology | Volume 17 | Number 1 | January 1990 | Pages 140-147
Technical Paper | Stellarator System | doi.org/10.13182/FST90-A29177
Articles are hosted by Taylor and Francis Online.
The analysis of an l = 2 torsatron with a relatively small pitch angle of the helical winding, which requires an additional toroidal field (TF), is presented. The main advantage of this torsatron design, as compared with a conventional torsatron having a large helical winding pitch angle and no TF coils, is the reduction of the helical winding current and the helical ripple of the magnetic field. This facilitates construction and operation of the most complicated component of the magnetic system, the helical winding, and also reduces the plasma losses due to magnetic field ripple. An experimental device of this type, URAGAN-2M, now under construction at the Kharkov Institute of Physics and Technology, is described. The reactor prospects of this concept are also discussed.