Abstract
VTT is currently working on the development of the deterministic computer code REMS for reactor dosimetry calculations. The transport solution in REMS is based on a response-matrix formalism, with multi-group responses pre-computed by Serpent 2. In this sense, the Serpent-REMS sequence embodies a two-step approach. Reaction rates for three threshold nuclear reactions were calculated by REMS and compared against measured values in the context of the VENUS-3 benchmark experiment. For the 383 experimental values available, the average and standard deviation of calculated-to-experimental reaction rate ratios were (1.03 ± 0.11). This work also reports on the ongoing validation of the Monte Carlo code Serpent 2 for reactor dosimetry applications. The VENUS-3 benchmark problem was also calculated with Serpent 2. The average reaction rate ratios and standard deviations were (1.02 ± 0.06). Execution times for REMS are considerably lower than those of Serpent 2. Furthermore, parallel scalablitity tests suggest promising prospects for the solution of multi-step irradiation scenarios with REMS. Future work will focus on means of improving the accuracy of the REMS solution by refining the Serpent 2 models used in response-matrix generation, as well as on uncertainty qualification.
Original language | English |
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Article number | 109351 |
Journal | Annals of Nuclear Energy |
Volume | 178 |
DOIs | |
Publication status | Published - 1 Dec 2022 |
MoE publication type | A1 Journal article-refereed |
Funding
The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Eric Dorval reports financial support was provided by Finnish National Research Programme on Nuclear Power Plant Safety (SAFIR2022).
Keywords
- Benchmark
- Dosimetry
- REMS
- Response matrix
- Serpent 2
- VENUS-3