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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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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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WIPP’s SSCVS: A breath of fresh air
This spring, the Department of Energy’s Office of Environmental Management announced that it had achieved a major milestone by completing commissioning of the Safety Significant Confinement Ventilation System (SSCVS) facility—a new, state-of-the-art, large-scale ventilation system at the Waste Isolation Pilot Plant, the DOE’s geologic repository for defense-related transuranic (TRU) waste in New Mexico.
Y. Harima
Nuclear Science and Engineering | Volume 85 | Number 1 | September 1983 | Pages 45-51
Technical Note | doi.org/10.13182/NSE83-A17150
Articles are hosted by Taylor and Francis Online.
An empirical formula for gamma-ray buildup factors in two-layer shields is proposed. The values of the parameters are given for the formula when fitted to the dose buildup factors, calculated by the invariant imbedding method, for normally incident gamma rays penetrating two-layer shields comprised of combinations of water, iron, or lead slabs. The results from the present formula are in excellent agreement with the basic data in the 0.66- to 10-MeV energy range and for total thicknesses up to ∼20 mfp. The parameters used in the formula change smoothly with the source energy. Therefore; the buildup factor for any arbitrary energy can easily be estimated by interpolation of the parameters with respect to energy. The buildup factors provided by this formula also are in good agreement with those from transport calculations for two-layer shields consisting of water and lead. These factors also agree with those measured by two ionization chambers for 60Co radiation penetrating two-layer shields comprised of water, iron, or lead slabs.
