MCNP perturbation technique for criticality analysis

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The differential operator perturbation technique has been incorporated into the Monte Carlo N-Particle transport code MCNP and will become a standard feature of future releases. This feature includes first and/or second order terms of the Taylor Series expansion for response perturbations related to cross-section data (i.e., density, composition, etc.). Criticality analyses can benefit from this technique in that predicted changes in the track-length tally estimator of K{sub eff} may be obtained for multiple perturbations in a single run. A key advantage of this method is that a precise estimate of a small change in response (i.e., < 1%) is easily ... continued below

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8 p.

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McKinney, G.W. & Iverson, J.L. July 1, 1995.

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Description

The differential operator perturbation technique has been incorporated into the Monte Carlo N-Particle transport code MCNP and will become a standard feature of future releases. This feature includes first and/or second order terms of the Taylor Series expansion for response perturbations related to cross-section data (i.e., density, composition, etc.). Criticality analyses can benefit from this technique in that predicted changes in the track-length tally estimator of K{sub eff} may be obtained for multiple perturbations in a single run. A key advantage of this method is that a precise estimate of a small change in response (i.e., < 1%) is easily obtained. This technique can also offer acceptable accuracy, to within a few percent, for up to 20-30% changes in a response.

Physical Description

8 p.

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INIS; OSTI as DE95015296

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  • 5. international conference on nuclear criticality safety, Albuquerque, NM (United States), 17-22 Sep 1995

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  • Other: DE95015296
  • Report No.: LA-UR--95-2015
  • Report No.: CONF-9509100--22
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 100040
  • Archival Resource Key: ark:/67531/metadc623048

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Office of Scientific & Technical Information Technical Reports

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  • July 1, 1995

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  • June 16, 2015, 7:43 a.m.

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  • Feb. 25, 2016, 8:49 p.m.

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McKinney, G.W. & Iverson, J.L. MCNP perturbation technique for criticality analysis, article, July 1, 1995; New Mexico. (digital.library.unt.edu/ark:/67531/metadc623048/: accessed July 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.