A hybrid approach for neutronics calculations in the neutron shielding of sodium fast reactors

Open Access

Table 5

Deterministic calculation schemes used to calculate the activation of secondary sodium in the neutron shielding.

Scheme	Sodium mesh	Angular order	Shielding description	Required memory¹	Computation time²
1	6 cm	S₁₆	Heterogeneous	124 Gb	49 h / 40 CPU
2	8 cm	S₁₆	Heterogeneous	100 Gb	56 h / 32 CPU
3	20 cm	S₁₆	Heterogeneous	50 Gb	36 h / 32 CPU
4	20 cm	S₆	Heterogeneous	41 Gb	16 h / 40 CPU
5	20 cm	S₆	Homogeneous	20 Gb	11 h / 24 CPU

¹ There is a dependency between the memory cost and the number of processors. Therefore, these costs are indicative.

² The calculations are run on different machines. Therefore, the calculation times are indicative.

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