Development of shutdown dose rate calculation code based on cosRMC and application to benchmark analysis

Zhang, Xian; Liu, Shichang; Lu, Peng; Zhang, Xiaokang; Zheng, Y.; Chen, Yixue; Liu, Songlin

doi:10.1016/j.fusengdes.2021.112846

Cited by 5 publications

(2 citation statements)

References 16 publications

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“…There are several mesh-based R2S implementations for calculating the SDR, such as MCR2S [7], R2Smesh [8], R2SUNED [9], PyNE R2S [10,11] and R2S with cosRMC [12]. All these validated mesh-based R2S implementations, with unique features, advantages and disadvantages, are reliable methods for calculating the SDR.…”

Section: Introductionmentioning

confidence: 99%

“…PyNE R2S supports multiple Direct Accelerated Geometry Monte Carlo (DAGMC) embedded Monte Carlo particle transport codes, such as DAG-OpenMC [11] and DAG-MCNP5 [10], with not much modification to the source code except for the subroutine for photon source sampling. The interface functions and codes of PyNE R2S can be easily transferred or applied to other Monte Carlo codes with mesh-tally ability, such as cosRMC [12].…”

Section: Introductionmentioning

confidence: 99%

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Implementation and application of PyNE sub-voxel R2S for shutdown dose rate analysis

Zhang¹,

Shriwise²,

Liu³

et al. 2022

Plasma Sci. Technol.

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PyNE R2S is one of the mesh-based R2S implementations with the capability of performing shutdown dose rate (SDR) analysis directly on CAD geometry with Cartesian or tetrahedral meshes and supports advanced variance reduction for fusion energy systems. However, the assumption of homogenized materials of PyNE R2S with Cartesian mesh throughout a mesh voxel introduces an approximation in the case where a voxel covers multiple non-void cells. This work implements a sub-voxel method to add fidelity to PyNE R2S with Cartesian mesh during the process of activation and photon source sampling by performing independent inventory calculations for each cell within a mesh voxel, and using the results of those independent calculations to sample the photon source more precisely. The PyNE sub-voxel R2S has been verified with the Frascati Neutron Generator (FNG)-ITER and ITER computational shutdown dose rate benchmark problems. The results of the sub-voxel R2S show a satisfactory agreement with the experimental values or reference results. The PyNE sub-voxel R2S has been applied to the shutdown dose rate calculation of the Chinese Fusion Engineering Testing Reactor (CFETR). In conclusion, the sub-voxel R2S is a reliable tool for shutdown dose rate calculation and obtains more accurate results with the same voxel size than voxel R2S.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Implementation and application of PyNE sub-voxel R2S for shutdown dose rate analysis

Zhang¹,

Shriwise²,

Liu³

et al. 2022

Plasma Sci. Technol.

Self Cite

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Comparative Study on the Reduction of Tritium Breeding Ratio Caused by Inventory Changes of a Solid-State Tritium Breeding Blanket in a Fusion Demonstration Reactor Using MCNP and FISPACT-II

Kim

2024

J Fusion Energ

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The self-sufficient supply of tritium in the deuterium-tritium nuclear fusion demonstration reactor (DEMO) is a fundamental design requirement. But, it is hindered by depletion of tritium breeding materials resulting in reduction of tritium breeding ratio (TBR) less than the initial design value especially in the solid-state tritium breeding blanket (TBB) of the DEMO. Unlike the liquid tritium breeding blanket of DEMO, compensation measures of the depleted breeding material in the solid-state TBB will be its substitution depending on the reduction rate of TBR. To estimate the replacement period of the solid-state TBB, it is required to estimate the reduction rate of TBR according to the operation conditions of the DEMO and the physical configuration of a solid-state TBB. In this study, the representative simulation codes, MCNP and FISPACT-II, are used for assessment of the reduction rate of TBR with the benchmarking model which is modified from the one poloidal segment of the TBB in the Korean-DEMO. After 3 full power-year operations with the neutron irradiation with the benchmarking model, the TBR simulated by MCNP is reduced to 96.84% of the initially calculated TBR, but the TBR calculated by FISPACT-II is reduced to 90.57% of the initially calculated TBR.

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Development of unstructured mesh tally capability in cosRMC and application to shutdown dose rate analysis

Zhang

Liu

Wang

et al. 2022

Fusion Engineering and Design

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Development of shutdown dose rate calculation code based on cosRMC and application to benchmark analysis

Cited by 5 publications

References 16 publications

Implementation and application of PyNE sub-voxel R2S for shutdown dose rate analysis

Implementation and application of PyNE sub-voxel R2S for shutdown dose rate analysis

Comparative Study on the Reduction of Tritium Breeding Ratio Caused by Inventory Changes of a Solid-State Tritium Breeding Blanket in a Fusion Demonstration Reactor Using MCNP and FISPACT-II

Development of unstructured mesh tally capability in cosRMC and application to shutdown dose rate analysis

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