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GAIN makes diverse selections for its third round of awards this year
The Department of Energy’s Gateway for Accelerated Innovation in Nuclear has recently awarded four third-round fiscal year 2026 vouchers to support the development of innovative nuclear technologies. Each company will get access to specific capabilities and expertise in the DOE’s national laboratory complex—in this round of awards Idaho National Laboratory, Oak Ridge National Laboratory, and Sandia National Laboratories are named—and will be responsible for a minimum 20 percent cost share, which can be an in-kind contribution.
R.E. Potok, H. Becker, L. Bromberg, D.R. Cohn, N. Diatchenko, P .B. Roemer, J.E.C. Williams
Fusion Science and Technology | Volume 4 | Number 2 | September 1983 | Pages 1314-1319
Alternate Concepts | doi.org/10.13182/FST83-A23038
Articles are hosted by Taylor and Francis Online.
We present an analytical and numerical analysis of a tokamak reactor with a set of helical coils added in order to eliminate plasma disruptions. The optimal helical configuration was found to be a set of continuous, = 2 stellarator coils which are made of copper and are internal to the toroidal field coils, being the number of poloidal field periods. (The optimization process did not include evaluation of the viability of a modular stellarator reactor). Scaling laws were developed for this optimal configuration, and a series of parametric scans are performed with varying assumptions for the forces on the helical coils and the ratio of helical coil transform to plasma transform (M*). The option space available for attractive reactor designs is strongly constrained and involves large forces on the helical coils, low q plasma operation (q being the plasma safety factor), and moderately low M* (3 to 5). Numerical calculations showed that M* must be > 3 in order to obtain well defined flux surfaces. This is in agreement with results from the JIPP-TII tokamak.