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Division Spotlight
Education, Training & Workforce Development
The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
Meeting Spotlight
2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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
New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
W. L. Filippone
Nuclear Science and Engineering | Volume 62 | Number 1 | January 1977 | Pages 69-91
Technical Paper | doi.org/10.13182/NSE77-A26940
Articles are hosted by Taylor and Francis Online.
Several new formulations of the response matrix doubling technique, which employ the combined use of a coarse and fine angular mesh, have been developed. The fine angular mesh is used to represent particle distributions that are highly anisotropic, while the coarse angular mesh is used for angular distributions that are more nearly isotropic. The fine and coarse mesh distributions are related by nonsquare response matrices. Calculations of transmitted and reflected currents for simple one-speed slab problems indicate that the new formulations can greatly improve the efficiency of response matrix calculations. Reflected currents calculated by using one of the new response matrix formulations were found to be 9 to 40 times more accurate than those obtained from conventional response matrix calculations using comparable computational effort. Improvements in transmitted current calculations were nearly as great. The new formulations also are applicable to more realistic calculations. The results of a multigroup calculation were quite encouraging. For energy-dependent problems, we can use a coarse and fine energy mesh as well as a coarse and fine angular mesh, so the potential for improvement appears to be even greater than for one-speed problems.