A keff Search Capability in MC21

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The MC21 Monte Carlo code is required to permit an individual geometric component or groups of components to be tagged as ''movable'' within some permissible range. Typical examples of such movable components would be control devices such as translating rods or rotating drums. Given this geometric information, a target multiplication factor (k{sub eff}), and a convergence criterion, MC21 will iterate on movable component positions and return a final position that reflects a k{sub eff} close to the target value. An initial version of this capability is demonstrated through modifications to MC21 that sets the geometry data structures for the movable ... continued below

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Morrow RE, Trumbull TH, Donovan TJ, Sutton TM January 9, 2007.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 11 times . More information about this article can be viewed below.

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The MC21 Monte Carlo code is required to permit an individual geometric component or groups of components to be tagged as ''movable'' within some permissible range. Typical examples of such movable components would be control devices such as translating rods or rotating drums. Given this geometric information, a target multiplication factor (k{sub eff}), and a convergence criterion, MC21 will iterate on movable component positions and return a final position that reflects a k{sub eff} close to the target value. An initial version of this capability is demonstrated through modifications to MC21 that sets the geometry data structures for the movable components, calls the main Fortran-95 solver to compute k{sub eff}, and converges on the final position. This approach uses an adaptive batching algorithm that continually increases the accuracy of each successive MC21 k{sub eff} result as the movable geometry approaches the converged position.

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  • Joint International Topical Meeting on Mathematics and Computation and Supercomputing in Nuclear Applications, Monterey, CA, April 15 - 19, 2007

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  • Report No.: LM-06K143
  • Grant Number: DE-AC12-00SN39357
  • Office of Scientific & Technical Information Report Number: 903082
  • Archival Resource Key: ark:/67531/metadc886454

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  • January 9, 2007

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  • Sept. 22, 2016, 2:13 a.m.

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  • Feb. 16, 2017, 6:46 p.m.

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Morrow RE, Trumbull TH, Donovan TJ, Sutton TM. A keff Search Capability in MC21, article, January 9, 2007; Niskayuna, NY. (digital.library.unt.edu/ark:/67531/metadc886454/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.