ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
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.
2020 ANS Virtual Winter Meeting
November 15–19, 2020
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!
Latest Magazine Issues
Latest Journal Issues
Nuclear Science and Engineering
Fusion Science and Technology
UWC 2020: A call for transformational change
Bowing to current COVID-19 realities but buoyed by the success of June’s virtual Annual Meeting, ANS event planners returned to the virtual realm for this year’s Utility Working Conference. Originally scheduled for August 9–12 at Marco Island, Fla., the condensed event was held Wednesday, August 11, wherever registrants’ computer devices happened to be located.
In addition to 26 educational sessions and workshops, UWC 2020 featured an opening plenary session titled “Achieving Transformational Change: A leadership discussion,” moderated by Bob Coward, MPR Associates principal officer and ANS past president (2017–2018). Plenary panelists included representatives from three utilities—Arizona Public Service (APS), Exelon, and Xcel Energy—plus the Institute of Nuclear Power Operations (INPO) and the Nuclear Regulatory Commission.
M. Yoda, S. I. Abdel-Khalik
Fusion Science and Technology | Volume 72 | Number 3 | October 2017 | Pages 285-293
Technical Paper | dx.doi.org/10.1080/15361055.2017.1333825
Articles are hosted by Taylor and Francis Online.
Developing ways to effectively remove the extremely high heat fluxes incident on the plasma-facing components is an important challenge for magnetic fusion energy (MFE). In most cases, the target plates of the divertor, which removes helium ash and other impurities from the core plasma, are subject to the most extreme conditions, with steady-state incident heat fluxes of at least 10 MW/m2. Starting from the early 1990s, a variety of divertor designs with target plates of tungsten (W), cooled for the most part by impinging jets of helium (He), have been investigated.
This paper reviews and discusses a number of these impinging-jet concepts, including the modular He-cooled finger-type configurations developed by the Karlsruhe Institute of Technology (KIT), as well as the T-tube divertor, the helium-cooled flat-plate (HCFP) divertor, and the combined plate/finger divertor, all evaluated as part of the ARIES studies. Over the last 15 years, a number of studies have shown that the steady-state thermal and structural performance of single units of a number of these divertor designs can be evaluated with reasonable accuracy under prototypical conditions using a combination of numerical simulations and experimental studies. The helium-cooled modular jet (HEMJ) design has been successfully tested at incident heat fluxes as great as 13 MW/m2 at prototypical conditions. Although it remains unclear how much neutron irradiation damage will affect W, or other armor materials, He jet-impingement cooling is a leading candidate for resolving power exhaust heat removal issues in plasma-material interactions.