Comparative Neutronics Analysis of DIMPLE S06 Criticality Benchmark with Contemporary Reactor Core Analysis Computer Code Systems

Table 9

The assembly power distribution by a direct and two-step modeling for DIMPLE S06A.

Analysis code	Normalized assembly power		RMS (%)
	Center	Edge
MCNP direct	0.628	0.372
SERPENT direct (ref.)	0.627	0.373	(0.11)^(1)
CASMO direct (ref.)	0.616	0.384	(1.15)
NEWT direct (ref.)	0.627	0.373	(0.10)
No ADF
SERPENT/PARCS^(2)	−0.29	0.49	0.18 (0.07)
CASMO/PARCS	0.28	−0.45	0.17 (1.33)
NEWT/PARCS	−0.01	0.01	0.00 (0.10)
ADF
SERPENT/PARCS	−0.14	0.24	0.09 (0.02)
CASMO/PARCS	−0.60	0.96	0.37 (0.79)
NEWT/PARCS	−0.83	1.39	0.52 (0.41)

( ): RMS error for MCNP and two-step.
⁽²⁾Relative difference (%): (direct − two-step)/direct 100.