Sensitivity and uncertainty analysis of the HCLL breeder blanket experiment in the frame of the EU fusion technology programme

The mock-up of the EU Test Blanket Module (TBM) based on the Helium-Cooled Lithium-Lead (HCLL) concept was irradiated at Frascatti, Italy, in order to assess the uncertainty in the tritium production rate (TPR) due to the uncertainty in the nuclear data and the computational methods. The benchmark should contribute also to the validation of the new nuclear cross-section and covariance data evaluations. This paper presents the final design of the benchmark and the analysis using the deterministic transport, sensitivity and uncertainty code system. The analysis includes the calculation of the tritium production rate (TPR) in LiPb layers and the neutron reaction rates, which were measured in the experimental set-up. The SUSD3D cross-section sensitivity and uncertainty code together with the 2D/3D deterministic transport code package DOORS is used for the analysis of the experiment. Based on the sensitivity analyses the most important nuclear reactions and energy ranges in the particular reaction rate measurements are identified, as well as the corresponding uncertainties.