Abstract
One important modelization of a transport code working on a coarse energy mesh is the self-shielding. The French transport code APPOLO 2, developed at the Commissariat a l`Energie Atomique, uses a self-shielding formalism based on a double equivalence. First a homogenization gives the reaction rates in a heterogeneous geometry, and then a multigroup equivalence gives, once the reaction rates are known, the self-shielded cross-sections. The homogenization is a very sensitive part because it is the one which requires physical modelizations. We have added a new model which allows us to treat numerous narrow resonances statistically distributed in the same group of the multigroup mesh. It is important to notice that for a narrow resonance isolated in a group, that new model is equivalent to the previous narrow resonance model (NR).
Citation Formats
Coste, M, Tellier, H, Ribon, P, Raepsaet, V, and Van der Gucht, C.
New improvements in the self-shielding formalism of the Apollo-2 code.
France: N. p.,
1993.
Web.
Coste, M, Tellier, H, Ribon, P, Raepsaet, V, & Van der Gucht, C.
New improvements in the self-shielding formalism of the Apollo-2 code.
France.
Coste, M, Tellier, H, Ribon, P, Raepsaet, V, and Van der Gucht, C.
1993.
"New improvements in the self-shielding formalism of the Apollo-2 code."
France.
@misc{etde_10154792,
title = {New improvements in the self-shielding formalism of the Apollo-2 code}
author = {Coste, M, Tellier, H, Ribon, P, Raepsaet, V, and Van der Gucht, C}
abstractNote = {One important modelization of a transport code working on a coarse energy mesh is the self-shielding. The French transport code APPOLO 2, developed at the Commissariat a l`Energie Atomique, uses a self-shielding formalism based on a double equivalence. First a homogenization gives the reaction rates in a heterogeneous geometry, and then a multigroup equivalence gives, once the reaction rates are known, the self-shielded cross-sections. The homogenization is a very sensitive part because it is the one which requires physical modelizations. We have added a new model which allows us to treat numerous narrow resonances statistically distributed in the same group of the multigroup mesh. It is important to notice that for a narrow resonance isolated in a group, that new model is equivalent to the previous narrow resonance model (NR).}
place = {France}
year = {1993}
month = {Jun}
}
title = {New improvements in the self-shielding formalism of the Apollo-2 code}
author = {Coste, M, Tellier, H, Ribon, P, Raepsaet, V, and Van der Gucht, C}
abstractNote = {One important modelization of a transport code working on a coarse energy mesh is the self-shielding. The French transport code APPOLO 2, developed at the Commissariat a l`Energie Atomique, uses a self-shielding formalism based on a double equivalence. First a homogenization gives the reaction rates in a heterogeneous geometry, and then a multigroup equivalence gives, once the reaction rates are known, the self-shielded cross-sections. The homogenization is a very sensitive part because it is the one which requires physical modelizations. We have added a new model which allows us to treat numerous narrow resonances statistically distributed in the same group of the multigroup mesh. It is important to notice that for a narrow resonance isolated in a group, that new model is equivalent to the previous narrow resonance model (NR).}
place = {France}
year = {1993}
month = {Jun}
}