TY - JOUR
T1 - Improved Monte Carlo – Perturbation Method For Estimation Of Control Rod Worths In A Research Reactor
AU - Kalcheva, Silva
AU - Koonen, Edgar
A2 - Beeckmans de West-Meerbeeck, André
N1 - Score = 10
PY - 2009/4/5
Y1 - 2009/4/5
N2 - A hybrid method dedicated to improve the experimental technique for estimation of control rod worths in a research reactor is presented. The method uses a combination of Monte Carlo technique and perturbation theory. Perturbation method is used to obtain the equation for the relative efficiency of control rod insertion. A series of coefficients, describing the axial absorption profile are used to correct the equation for a composite rod, having a complicated burn-up irradiation history. These coefficients have to be determined – by experiment or by using some theoretical/numerical method. In the present paper they are derived from the macroscopic absorption cross sections, obtained from detailed Monte Carlo calculations by MCNPX 2.6.F of the axial burn-up profile during control rod life. The method is validated on measurements of control rod worths at the BR2 reactor. Comparison with direct MCNPX evaluations of control rod worths is also presented.
AB - A hybrid method dedicated to improve the experimental technique for estimation of control rod worths in a research reactor is presented. The method uses a combination of Monte Carlo technique and perturbation theory. Perturbation method is used to obtain the equation for the relative efficiency of control rod insertion. A series of coefficients, describing the axial absorption profile are used to correct the equation for a composite rod, having a complicated burn-up irradiation history. These coefficients have to be determined – by experiment or by using some theoretical/numerical method. In the present paper they are derived from the macroscopic absorption cross sections, obtained from detailed Monte Carlo calculations by MCNPX 2.6.F of the axial burn-up profile during control rod life. The method is validated on measurements of control rod worths at the BR2 reactor. Comparison with direct MCNPX evaluations of control rod worths is also presented.
KW - control rod worth
KW - perturbation method
KW - MCNPX
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_103267
UR - http://knowledgecentre.sckcen.be/so2/bibref/6647
U2 - 10.1016/j.anucene.2008.12.023
DO - 10.1016/j.anucene.2008.12.023
M3 - Article
SN - 0306-4549
VL - 36
SP - 344
EP - 349
JO - Annals of nuclear energy
JF - Annals of nuclear energy
IS - 3
ER -