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Accelerator Applications
The division was organized to promote the advancement of knowledge of the use of particle accelerator technologies for nuclear and other applications. It focuses on production of neutrons and other particles, utilization of these particles for scientific or industrial purposes, such as the production or destruction of radionuclides significant to energy, medicine, defense or other endeavors, as well as imaging and diagnostics.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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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Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
D. G. Cacuci, C. F. Weber, E. M. Oblow, J. H. Marable
Nuclear Science and Engineering | Volume 75 | Number 1 | July 1980 | Pages 88-110
Technical Paper | doi.org/10.13182/NSE75-88
Articles are hosted by Taylor and Francis Online.
General sensitivity theory is presented for treating problems characterized by systems of nonlinear equations with nonlinear responses. The concept of the Fréchet derivative is shown to be fundamental to both differential and variational approaches. These two approaches, unified through the Fréchet derivative, form an operator viewpoint of sensitivity theory, leading to identical expressions for the adjoint equations and for the sensitivity functions. Also presented is an alternative sensitivity formalism for systems of nonlinear matrix equations, such as those arising from the application of numerical methods to many practical problems. This approach significantly enlarges the scope and versatility of sensitivity theory as it allows direct treatment of parameters that are purely of numerical-methods origin. To demonstrate the usefulness and practical applications of both operator and matrix formalisms, a significantly nonlinear transient problem in fast reactor thermal hydraulics is considered. Following the derivation and comparative analysis of the adjoint equations and sensitivity expressions using both formalisms, an extensive sensitivity study for this problem is presented. Conclusions about the future applicability of the general theory are also discussed.
