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November 9–12, 2025
Washington, DC|Washington Hilton
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Fusion Science and Technology
Latest News
NNSA awards BWXT $1.5B defense fuels contract
The Department of Energy’s National Nuclear Security Administration has awarded BWX Technologies a contract valued at $1.5 billion to build a Domestic Uranium Enrichment Centrifuge Experiment (DUECE) pilot plant in Tennessee in support of the administration’s efforts to build out a domestic supply of unobligated enriched uranium for defense-related nuclear fuel.
Vasily K. Gusev, Nikolai V. Sakharov, Vitaly V. Shpeizman, Vladimir A. Korotkov, Anatoly G. Panin, Vladimir F. Soikin, Seppo O. J. Kivivuori, Asko J. Helenius, Jukka V. A. Somerkoski, Jukka A. Heikkinen
Fusion Science and Technology | Volume 34 | Number 2 | September 1998 | Pages 137-146
Technical Paper | doi.org/10.13182/FST98-A59
Articles are hosted by Taylor and Francis Online.
The central solenoid is a critical component of the spherical tokamak Globus-M (plasma major radius R = 0.36 m, plasma minor radius a = 0.24 m, aspect ratio R/a = 1.5, toroidal magnetic field BT 0.62 T, plasma current Ip 0.5 MA). The two-layer solenoid, 1312 mm long with a 200-mm outer diameter, is located between the 112-mm-diam inner rod of the toroidal field coils and the 217-mm-diam inner cylinder of the vacuum vessel. Strong magnetic and thermal cyclic loads acting on the solenoid require that it be manufactured from a high-strength hollow conductor. The conductor material selected for the solenoid winding is CuAg0,1(OF). Advanced manufacturing technology has made it possible to increase the continuous length of conductor (with an ~20 × 20 mm2 cross section) up to the 66 m that is required for Globus-M. To verify the winding procedure, a one-sixth-length solenoid prototype has been constructed and tested with loads exceeding the design loads acting on the full-scale solenoid. The tests included magnetic and strain measurements. The results are in satisfactory agreement with structural analysis.