TY - JOUR
T1 - An easy to implement global variance reduction procedure for MCNP
AU - van Wijk, Andreas
AU - Van den Eynde, Gert
AU - Hoogenboom, Eduard
A2 - Baeten, Peter
N1 - Score = 10
PY - 2011/11
Y1 - 2011/11
N2 - In this article, an easy to implement global variance reduction procedure is demonstrated. The procedure is capable of flattening the relative error distribution in a global mesh tally covering the geometry of a complex system. The method is fully based on the I/O capabilities of the MCNP Monte Carlo radiation transport code family and requires little additional support code and almost no user judgment to work properly. Increases, with respect to a standard simulation, in a global figure of merit ranging up to a factor 276 for a PWR core configuration have been observed. Also, the relative error distribution was flattened substantially in all studied systems by the application of the procedure and the number of empty mesh tally cells was reduced.
AB - In this article, an easy to implement global variance reduction procedure is demonstrated. The procedure is capable of flattening the relative error distribution in a global mesh tally covering the geometry of a complex system. The method is fully based on the I/O capabilities of the MCNP Monte Carlo radiation transport code family and requires little additional support code and almost no user judgment to work properly. Increases, with respect to a standard simulation, in a global figure of merit ranging up to a factor 276 for a PWR core configuration have been observed. Also, the relative error distribution was flattened substantially in all studied systems by the application of the procedure and the number of empty mesh tally cells was reduced.
KW - Variance reduction
KW - MCNP
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_115127
UR - http://knowledgecentre.sckcen.be/so2/bibref/8224
U2 - 10.1016/j.anucene.2011.07.037
DO - 10.1016/j.anucene.2011.07.037
M3 - Article
SN - 0306-4549
VL - 38
SP - 2496
EP - 2503
JO - Annals of nuclear energy
JF - Annals of nuclear energy
IS - 11
ER -