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This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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Vogtle-3 shuts down for valve issue
One of the new Vogtle units in Georgia was shut down unexpectedly on Monday last week for a valve issue that has since been investigated and repaired. According to multiple local news outlets, Georgia Power reported on July 17 that Unit 3 was back in service.
Southern Company spokesperson Jacob Hawkins confirmed that Vogtle-3 went off line at 9:25 p.m. local time on July 8 “due to lowering water levels in the steam generators caused by a valve issue on one of the three main feedwater pumps.”
Ian H. Hutchinson, Steve F. Horne, Gerasimos Tinios, Stephen M. Wolfe, Robert S. Granetz
Fusion Science and Technology | Volume 30 | Number 2 | November 1996 | Pages 137-150
Technical Paper | Special Section: Plasma Control Issues for Tokamaks / Plasma Engineering | doi.org/10.13182/FST96-A30746
Articles are hosted by Taylor and Francis Online.
A general approach to plasma shape control and its application to the Alcator C-Mod tokamak are described. The method is linear in the magnetic measurements but is entirely algorithmic, requiring no fitting of databases. Estimators of the shape parameters are based on a complete vacuum reconstruction of the flux, so that control points can be defined anywhere within the reconstructed region. The conversion of flux differences into flux-surface distances and the calculation of appropriate coil currents for controlling each parameter require a specific reference equilibrium. However, the control is very insensitive to the choice of reference equilibrium provided that the shape parameters are chosen appropriately. Control current combinations that are orthogonal, in the sense of changing one parameter and not the others, are obtained. Experiments with these estimators and controllers show them to be accurate and robust over a wide range of plasma shapes.