4 Effective Delayed Neutron Fraction
107
Table 4.13
Comparison between subcriticality of experiments and calculations (MCNP6.1 and PARTISN) (Ref. [15])
(a) Cases I-1 to I-5
Case
Experiment
MCNP6.1
Difference* [pcm]
PARTISN
Difference* [pcm]
I-1
0.99292
± 0.00004
0.99172
± 0.00008
−43
0.98957
−259
I-2
0.99070
± 0.00013
0.98948
± 0.00010
−45
0.98723
−272
I-3
0.98440
± 0.00013
0.98301
± 0.00011
−63
0.97858
−514
I-4
0.98848
± 0.00018
0.98725
± 0.00011
−46
0.98532
−242
I-5
0.98034
± 0.00018
0.97882
± 0.00012
−78
0.97545
−422
(b) Cases II to VII
Case
MCNP6.1
PARTISN
Difference** [pcm]
II
0.99553
± 0.00004
0.99343
211
III
0.98344
± 0.00004
0.98169
178
IV
0.96918
± 0.00004
0.96784
138
V
0.96096
± 0.00004
0.96048
49
VI
0.95661
± 0.00004
0.95585
79
VII
0.93272
± 0.00004
0.93334
−66
*Difference between experiment and calculation (
1
−
k cal
eff
k
exp
eff
× 10 5
[pcm])
**Difference of k
eff between MCNP6.1 and PARTISN (
1
−
k PARTISN
eff
k MCNP6.1
eff
× 10 5
[pcm])