On the feasibility of a homogenised multi-group Monte Carlo method in reactor analysis

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

3 Citations (Scopus)

Abstract

he use of homogenised multi-group cross sections to speed up Monte Carlo calculation has been studied to some extent, but the method is not widely implemented in modern calculation codes. This paper presents a calculation scheme in which homogenised material parameters are generated using the PSG continuous-energy Monte Carlo reactor physics code and used by MORA, a new full-core Monte Carlo code entirely based on homogenisation. The theory of homogenisation and its implementation in the Monte Carlo method are briefly introduced. The PSG-MORA calculation scheme is put to practice in two fundamentally different test cases: a small sodium-cooled fast reactor (JOYO) and a large PWR core. It is shown that the homogenisation results in a dramatic increase in efficiency. The results are in a reasonably good agreement with reference PSG and MCNP5 calculations, although fission source convergence becomes a problem in the PWR test case.
Original languageEnglish
Title of host publicationInternational Conference on the Physics of Reactors 2008 (PHYSOR 08)
EditorsRakesh Chawla, Vinh N. Dang, Konstantin Mikityuk
PublisherPaul Scherrer Institut
Pages679-686
Number of pages8
Volume1
ISBN (Electronic)978-3-9521409-5-6
ISBN (Print)978-1-61782-121-9
Publication statusPublished - 2008
MoE publication typeA4 Article in a conference publication

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Monte Carlo method
reactors
homogenizing
reactor physics
fission
sodium
cross sections
energy

Cite this

Leppänen, J. (2008). On the feasibility of a homogenised multi-group Monte Carlo method in reactor analysis. In R. Chawla, V. N. Dang, & K. Mikityuk (Eds.), International Conference on the Physics of Reactors 2008 (PHYSOR 08) (Vol. 1, pp. 679-686). Paul Scherrer Institut.
Leppänen, Jaakko. / On the feasibility of a homogenised multi-group Monte Carlo method in reactor analysis. International Conference on the Physics of Reactors 2008 (PHYSOR 08) . editor / Rakesh Chawla ; Vinh N. Dang ; Konstantin Mikityuk. Vol. 1 Paul Scherrer Institut, 2008. pp. 679-686
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abstract = "he use of homogenised multi-group cross sections to speed up Monte Carlo calculation has been studied to some extent, but the method is not widely implemented in modern calculation codes. This paper presents a calculation scheme in which homogenised material parameters are generated using the PSG continuous-energy Monte Carlo reactor physics code and used by MORA, a new full-core Monte Carlo code entirely based on homogenisation. The theory of homogenisation and its implementation in the Monte Carlo method are briefly introduced. The PSG-MORA calculation scheme is put to practice in two fundamentally different test cases: a small sodium-cooled fast reactor (JOYO) and a large PWR core. It is shown that the homogenisation results in a dramatic increase in efficiency. The results are in a reasonably good agreement with reference PSG and MCNP5 calculations, although fission source convergence becomes a problem in the PWR test case.",
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Leppänen, J 2008, On the feasibility of a homogenised multi-group Monte Carlo method in reactor analysis. in R Chawla, VN Dang & K Mikityuk (eds), International Conference on the Physics of Reactors 2008 (PHYSOR 08) . vol. 1, Paul Scherrer Institut, pp. 679-686.

On the feasibility of a homogenised multi-group Monte Carlo method in reactor analysis. / Leppänen, Jaakko.

International Conference on the Physics of Reactors 2008 (PHYSOR 08) . ed. / Rakesh Chawla; Vinh N. Dang; Konstantin Mikityuk. Vol. 1 Paul Scherrer Institut, 2008. p. 679-686.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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N2 - he use of homogenised multi-group cross sections to speed up Monte Carlo calculation has been studied to some extent, but the method is not widely implemented in modern calculation codes. This paper presents a calculation scheme in which homogenised material parameters are generated using the PSG continuous-energy Monte Carlo reactor physics code and used by MORA, a new full-core Monte Carlo code entirely based on homogenisation. The theory of homogenisation and its implementation in the Monte Carlo method are briefly introduced. The PSG-MORA calculation scheme is put to practice in two fundamentally different test cases: a small sodium-cooled fast reactor (JOYO) and a large PWR core. It is shown that the homogenisation results in a dramatic increase in efficiency. The results are in a reasonably good agreement with reference PSG and MCNP5 calculations, although fission source convergence becomes a problem in the PWR test case.

AB - he use of homogenised multi-group cross sections to speed up Monte Carlo calculation has been studied to some extent, but the method is not widely implemented in modern calculation codes. This paper presents a calculation scheme in which homogenised material parameters are generated using the PSG continuous-energy Monte Carlo reactor physics code and used by MORA, a new full-core Monte Carlo code entirely based on homogenisation. The theory of homogenisation and its implementation in the Monte Carlo method are briefly introduced. The PSG-MORA calculation scheme is put to practice in two fundamentally different test cases: a small sodium-cooled fast reactor (JOYO) and a large PWR core. It is shown that the homogenisation results in a dramatic increase in efficiency. The results are in a reasonably good agreement with reference PSG and MCNP5 calculations, although fission source convergence becomes a problem in the PWR test case.

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BT - International Conference on the Physics of Reactors 2008 (PHYSOR 08)

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A2 - Dang, Vinh N.

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Leppänen J. On the feasibility of a homogenised multi-group Monte Carlo method in reactor analysis. In Chawla R, Dang VN, Mikityuk K, editors, International Conference on the Physics of Reactors 2008 (PHYSOR 08) . Vol. 1. Paul Scherrer Institut. 2008. p. 679-686