Calculation of Reactor Kinetic Parameters with Monte Carlo Method

Basic conceptions of kinetic parameters,including effective delayed neutron fraction（β_eff）,effective neutron generation time（Λ_eff） and α eigenvalue,and Monte Carlo calculation methods for these values are systematically introduced in this paper.β_eff is obtained with a "Prompt Method".Perturbation method is chosen to obtain Λ_eff.And then α eigenvalue is obtained by two ways,（i） prompt neutron density attenuation,in other words "direct simulation of time evolvement",（ii） indirect method using the result of k_p and neutron generation time.Linear fitting is used to get the critical αc eigenvalues which match well with experimental ones.And uncertainties of kinetic parameters with different methods using Monte Carlo method are also analyzed.