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

Table 10

The assembly power distribution by a direct and two-step modeling for DIMPLE S06B.

Analysis code	Normalized assembly power		RMS (%)
	Center	Edge
MCNP direct	0.676	0.325
SERPENT direct (ref.)	0.676	0.324	(0.03)^(1)
CASMO direct (ref.)	0.664	0.336	(1.11)
NEWT direct (ref.)	0.676	0.324	(0.02)
No ADF
SERPENT/PARCS^(2)	6.66	−13.87	4.50 (4.47)
CASMO/PARCS	4.52	−8.94	3.00 (4.11)
NEWT/PARCS	5.69	−11.86	3.85 (3.82)
ADF
SERPENT/PARCS	−0.36	0.74	0.24 (0.27)
CASMO/PARCS	−1.88	3.73	1.25 (0.14)
NEWT/PARCS	−0.46	0.96	0.31 (0.33)

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