Community Research and Development Information Service - CORDIS

Abstract

In radiation physics and reactor analysis the only tools available for three dimensional neutron and gamma transport calculations have used the diffusion approximation together with transport corrections or stochastic simulation methods. Whilst the diffusion approximation is a poor choice in the case of strong material heterogeneity, the standard Monte Carlo approach is incapable of performing parametric studies efficiently. New computers have recently provided deterministic methods with the power required for the analysis of 3-D systems. Parallel to this development, new Monte Carlo sensitivity and perturbation schemes have emerged which permit the analysis of parametric variations. In this article the results of small parameter changes such as the withdrawal of fuel elements or control rods in real 3-D geometries are reported as they were proposed in a recent international benchmark exercise. A series of small reactivity changes for a D(2)O system are compared with the corresponding measurements. Both types of comparison show the potential of the methods in real design studies.

Additional information

Authors: RIEF H, JRC Ispra (IT);WATKINS P R D, JRC Ispra (IT);GONANO G, UKAEA, Abingdon (GB)
Bibliographic Reference: Paper presented: PHYSOR 90, Marseille (FR), April 23-27, 1990
Availability: Available from (1) as Paper EN 35283 ORA
Record Number: 199011548 / Last updated on: 1994-12-02
Category: PUBLICATION
Original language: en
Available languages: en