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Mathematics & Computation
Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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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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College students help develop waste-measuring device at Hanford
A partnership between Washington River Protection Solutions (WRPS) and Washington State University has resulted in the development of a device to measure radioactive and chemical tank waste at the Hanford Site. WRPS is the contractor at Hanford for the Department of Energy’s Office of Environmental Management.
Taro Ueki
Nuclear Science and Engineering | Volume 157 | Number 2 | October 2007 | Pages 119-131
Technical Paper | doi.org/10.13182/NSE07-A2717
Articles are hosted by Taylor and Francis Online.
A variance reduction method has been developed for the Monte Carlo calculation of electron emission energy profile induced by photon radiation. The spatial control of particle weight was exclusively investigated. It was derived that the photon weight in the electron range at an electron detection surface should be equal to the electron weight that is determined to be inversely proportional to the electron adjoint function. Therefore, the preliminary Monte Carlo calculation of the forward electron-only problem with the uniform electron source over the maximum electron range, maximum allowed energy, and all solid angles was conducted to create the photon and electron weight window. The photon weight window more than the maximum electron range away from the electron detection surface was made constant. Monte Carlo simulations of photon and electron coupled-transport were conducted for slab materials with photons normally incident on one side and the electron energy profile to be evaluated on the other side. Numerical results show that efficiency gain with respect to the simulation with no weight control is significant for slabs of typical low and high atomic number materials even if taking into account time spent on the preliminary Monte Carlo calculation of the electron adjoint function.