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Division Spotlight
Young Members Group
The Young Members Group works to encourage and enable all young professional members to be actively involved in the efforts and endeavors of the Society at all levels (Professional Divisions, ANS Governance, Local Sections, etc.) as they transition from the role of a student to the role of a professional. It sponsors non-technical workshops and meetings that provide professional development and networking opportunities for young professionals, collaborates with other Divisions and Groups in developing technical and non-technical content for topical and national meetings, encourages its members to participate in the activities of the Groups and Divisions that are closely related to their professional interests as well as in their local sections, introduces young members to the rules and governance structure of the Society, and nominates young professionals for awards and leadership opportunities available to members.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Fusion Science and Technology
Latest News
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.”
V. Mertens, C. Aubanel, O. Gruber, M. Kaufmann, G. Neu, G. Raupp, H. Richter, W. Treutterer, D. Zasche, Th. Zehetbauer, ASDEX Upgrade Team, NBI Team, ICRH Team
Fusion Science and Technology | Volume 32 | Number 3 | November 1997 | Pages 459-467
Technical Paper | Plasma Control Issues for Tokamaks | doi.org/10.13182/FST97-A8
Articles are hosted by Taylor and Francis Online.
The International Thermonuclear Experimental Reactor (ITER) must run near operational limits to produce high-performance plasmas that, beyond position and shape control, rely on optimized control of additional plasma parameters. Control of single parameters, such as beta, plasma stored energy, or ion cyclotron resonance heating antenna coupling, has already been reported. Further performance improvements can be achieved by coordinated control of combinations of parameters. These may be specific to the different phases of a discharge, e.g., for radiative boundary concepts. A growing understanding of discharge behavior will lead to the identification of better control scenarios involving both new parameters and control methods. This requires a universal platform into which control algorithms can flexibly be integrated to adapt to interesting discharge scenarios. With the multitude of processes expected to be implemented, management of real-time processes becomes crucial. This paper explains how this issue is raised by the requirement specification of the controller and how it influences design, implementation, and operation of the plasma performance controller. Examples such as the achievement of completely detached H-mode plasmas demonstrate the working method and its effectiveness.