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Division Spotlight
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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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Latest News
X-energy receives federal tax credit for TRISO fuel facility
Advanced reactor company X-energy has been awarded $148.5 million in tax credits under the Inflation Reduction Act for construction of its TRISO-X fuel fabrication facility in Oak Ridge, Tenn.
Adam Davis, Donald J. Dudziak, Drew E. Kornreich
Nuclear Science and Engineering | Volume 178 | Number 1 | September 2014 | Pages 42-56
Technical Paper | doi.org/10.13182/NSE13-10
Articles are hosted by Taylor and Francis Online.
Photon buildup factors provide a convenient method for radiation protection professionals to calculate dose and exposure behind various shielding configurations. Examination of buildup factors can also provide insight into the behavior of photons in these shields. Recent work has developed dual-layer buildup factors for several shielding configurations and a limited number of energies while slant-path buildup factors have been developed for single-layer shields. This work develops slant-path buildup factors for slab-geometric, dual-layer shields comprising polyethylene and lead at 25 energies conforming to the energies used in the buildup factor standard ANSI/ANS-6.4.3-1991 (W2001), “Gamma-Ray Attenuation Coefficients and Buildup Factors for Engineering Materials,” between 10 keV and 10 MeV. Further, the increased energy resolution of the calculations performed in this work allows the energy at which the previously identified “buildup reversal” phenomenon occurs to be more precisely identified. The effect of mesh spacing and quadrature resolution on fluence through the shields is also considered.