TY - GEN

T1 - Application of advanced self-shielding models to criticality-safety studies

AU - Martin, N.

AU - Hébert, A.

AU - Fernex, F.

AU - Bernard, F.

AU - Miss, J.

PY - 2009

Y1 - 2009

N2 - Recent improvements made in resonance self-shielding algorithms for reactor physics calculations can certainly be applied to criticality-safety studies. In this paper we investigate the possibility of using resonance self-shielding models based on the subgroup approach, conjointly with innovative energy meshes such as SHEM extended to 295 and 361 energy groups, to generate sets of homogenized, self-shielded, macroscopic cross sections. These group constants are then used in a multigroup Monte Carlo calculation. To do so, the lattice code DRAGON has been combined with the Monte Carlo code MORET, using experimental benchmarks from ICSBEP as a framework for validation. Numerical results show great concordance with experimental values and those of others, well validated, criticality codes.

AB - Recent improvements made in resonance self-shielding algorithms for reactor physics calculations can certainly be applied to criticality-safety studies. In this paper we investigate the possibility of using resonance self-shielding models based on the subgroup approach, conjointly with innovative energy meshes such as SHEM extended to 295 and 361 energy groups, to generate sets of homogenized, self-shielded, macroscopic cross sections. These group constants are then used in a multigroup Monte Carlo calculation. To do so, the lattice code DRAGON has been combined with the Monte Carlo code MORET, using experimental benchmarks from ICSBEP as a framework for validation. Numerical results show great concordance with experimental values and those of others, well validated, criticality codes.

KW - Criticality-safety

KW - ICSBEP

KW - Lattice code DRAGON

KW - Monte Carlo code MORET

KW - Resonance self-shielding

UR - http://www.scopus.com/inward/record.url?scp=74949122133&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:74949122133

SN - 9781615673490

T3 - American Nuclear Society - International Conference on Mathematics, Computational Methods and Reactor Physics 2009, M and C 2009

SP - 3243

EP - 3253

BT - American Nuclear Society - International Conference on Mathematics, Computational Methods and Reactor Physics 2009, M and C 2009

T2 - International Conference on Mathematics, Computational Methods and Reactor Physics 2009, M and C 2009

Y2 - 3 May 2009 through 7 May 2009

ER -