JAEA-Conf 2011-002 - 日本原子力研究開発機構

An outline of core configurations of EPICURE MH1.2 and MISTRAL core4 is shown in Table 1 and Fig. 2.
Program EPICURE MH1.2 MISTRAL core4
Core Configuration
Partial MOX
Homogeneous
Full MOX
17×17 Mockup
Vm/Vf 1.3 2.0
H/HM 3.7 5.8
Fuel pitch [cm] 1.26 1.32
Fuel rod type
MOX-7.0%
UO2-3.7%
MOX-7.0%
Core size [cm] 69 62
Table 1 Core parameters
All calculations were performed in 107 energy groups: SRAC2006 [4] was used to obtain the group-wise
cross sections for both JENDL-3.3 and JENDL-4.0. The group-wise cross sections were used in the
generalized perturbation theory code SAGEP [5] to obtain the sensitivity coefficients for “diff-k” between
EPICURE and MISTRAL. “The difference in diff-k” between JENDL-3.3 and JENDL-4.0 denoted as
δ(δk4.0-δk3.3) was evaluated by the following equation to obtain detailed information for the difference.
S
( k
l,
r,
g
4.
0
( k
2
JAEA-Conf 2011-002
k )
1
l,
r,
g
k
2
S
2
k S
1
1
(
)
4.
0 3.
3
k
) S
, 3.
3
3.
3
(2)
3.
3
UO2 3.7%
EPICURE MH1.2 MISTRAL core4
where < > represents integration over nuclide, reaction type and energy group, k1 and k2 are “keff” in EPICURE
MH1.2 and MISTRAL core4, S1 and S2 are the sensitivity coefficient for “keff” in EPICURE MH1.2 and
MISTRAL core4, δk3.3 and δk4.0 are “diff-k” based on JENDL-3.3 and JENDL-4.0, S3.3 is the sensitivity
coefficient for “diff-k” based on JENDL-3.3, σ3.3 and σ4.0 are the cross section based on JENDL-3.3 and
JENDL-4.0, respectively.
l,
r , g
MOX7.0%
Fig. 2 Core configurations
(1)