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As Nuclear News has done since 2022, we have compiled a review of the nuclear news that filled headlines and sparked conversations in the year just completed. Departing from the chronological format of years past, we open with the most impactful news of 2025: a survey of actions and orders of the Trump administration that are reshaping nuclear research, development, deployment, and commercialization. We then highlight some of the top news in nuclear restarts, new reactor testing programs, the fuel supply chain and broader fuel cycle, and more.
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.