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International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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Latest News
Argonne’s METL gears up to test more sodium fast reactor components
Argonne National Laboratory has successfully swapped out an aging cold trap in the sodium test loop called METL (Mechanisms Engineering Test Loop), the Department of Energy announced April 23. The upgrade is the first of its kind in the United States in more than 30 years, according to the DOE, and will help test components and operations for the sodium-cooled fast reactors being developed now.
C. E. Thomas, Jr., J. H. Harris, G. R. Haste, C. C. Klepper, J. T. Hogan, S. Tobin, F. W. Baity, R. C. Isler, T. Uckan, D. B. Batchelor, M. D. Carter, P. M. Ryan, D. J. Hoffman, the Oak Ridge National Laboratory/Fusion Energy Division Team, B. Saoutic, B. Beaumont, A. Becoulet, H. Kuus, D. Fraboulet, A. Grosman, D. Guilhem, W. Hess, J. Walter, T. Loarer, M. Chatelier, Equipe Tore Supra
Fusion Science and Technology | Volume 30 | Number 1 | September 1996 | Pages 1-39
Technical Paper | Plasma Heating System | doi.org/10.13182/FST96-A30760
Articles are hosted by Taylor and Francis Online.
Understanding ion cyclotron range of frequency (ICRF) antenna interaction with the edge/scrape-off-layer (SOL) plasma is crucial to building antennas that can survive long-pulse or steady-state high-power operation in plasmas. The global effects of ICRF/edge interactions are discussed. The present knowledge of ICRF-induced sheath interactions with the edge and SOL plasmas in magnetic fusion experiments is quantitatively reviewed and added to. The design principles and equations governing plasma heat loading and the sputtering of Faraday shields and the bumper limiters of ICRF antennas for long-pulse and steady-state devices are presented. Electrostatic sheaths on Faraday shields and bumper limiters are discussed, and an analytic estimate of the induced direct-current (dc) plasma potential at the lateral protection (bumper limiters) of ICRF antennas is given. This is a new result. This estimated dc voltage is used to give the total power flow to the lateral protection, and an expression for the power flux is given—also with new results. Equations to use in estimating impurity production (sputtering) and principles for minimizing impurity production are reviewed. Similar equations and estimates for electromotive radio-frequency sheaths are given, and new scaling laws for the dc voltage and power flow to the ICRF antenna lateral protection due to electromotive sheaths are proposed. The initial results from the ICRF/edge interaction experiments on Tore Supra are presented and discussed in light of the theoretical and heuristic results given.
