SENSITIVITY AND PERTURBATION THEORY IN FAST REACTOR CORE DESIGN

Jakub Lüley – Branislav Vrban –Štefan Čerba – Ján Haščík – Vladimír Nečas – Sang-Ji Kim

   This paper deals with the application of the perturbation theory in the area of fast reactor development. The basic theory and computational methods are described to point out their connection with common calculation tools. The reliability of the suggested methodology was validated by means of direct perturbations and comparison assessment. The shapes of sensitivity profiles were compared with sensitivities adopted from the International Subgroup 33 of NEA Paris. As an alternative to the used deterministic approach, sensitivity coefficients for defined sets of benchmark experiments were calculated by TSUNAMI based on a Monte Carlo flux calculation.

Keywords: fast reactor design, sensitivity coefficient, perturbation theory, validation

[full-paper]