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Fusion Energy
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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2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott Downtown
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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Smarter waste strategies: Helping deliver on the promise of advanced nuclear
At COP28, held in Dubai in 2023, a clear consensus emerged: Nuclear energy must be a cornerstone of the global clean energy transition. With electricity demand projected to soar as we decarbonize not just power but also industry, transport, and heat, the case for new nuclear is compelling. More than 20 countries committed to tripling global nuclear capacity by 2050. In the United States alone, the Department of Energy forecasts that the country’s current nuclear capacity could more than triple, adding 200 GW of new nuclear to the existing 95 GW by mid-century.
G. L. Varsamis, D. Steiner, M. J. Embrechts
Fusion Science and Technology | Volume 19 | Number 3 | May 1991 | Pages 1974-1978
Neutronic | Proceedings of the Ninth Topical Meeting on the Technology of Fusion Energy (Oak Brook, Illinois, October 7-11, 1990) | doi.org/10.13182/FST91-A29631
Articles are hosted by Taylor and Francis Online.
This work presents the analysis of neutron streaming through a tungsten-based shield, modelled as a set of interconnecting tungsten plates, cooled by an aqueous lithium salt solution. The plates are connected with right-angle bends, and then merge to a stainless-steel casing. Discrete neutron streaming paths exist through the right-angle connections and through the stainless steel joints. The analysis was performed in one and two dimensions, with discrete ordinates codes, and in three dimensions with a Monte Carlo code. The results indicate clear streaming paths, both behind ducts and also in cases were materials with very different neutron mean free paths are connected. The neutron flux was observed to peak behind the stainless-steel joints, when compared to adjoining tungsten shield sections. Streaming through the right-angle connections between tungsten plates was limited. The discrete ordinate codes (with low order quadrature sets), generally underestimated the neutron streaming. Higher order approximations required extensive computing time approaching that of the Monte Carlo analysis.
