JAEA-Data/Code 2007-004 - Welcome to Research Group for ...

7 IBR Right boundary condition, same as IBL
It is recommended that non-vacuum boundary at the right boundary for cylinder
or sphere should be not reflective but white.
8 IZM Number of zones
A zone is composed by one or more
spatial mesh. It is a unit for allocation of
material, thus it is equivalent to an
R-Region in the PIJ.
zone
IZM=3, IM=11
mesh interval
9 IM Number of mesh intervals
10 IEVT Problem type
= 0 The fixed source mode calculation in SRAC (IC2=2 and IQM=1) or the
external source problem in the whole energy range (IC12=±2 and IQM=2
or IPM>0). IQM and IPM is specified below in this Block
= 1 k eff eigenvalue calculation
= 2 Time absorption α search
Note:
The search options on concentration (=3), zone width (=4), outer radius (=5)
and buckling (=6) are all suppressed in the SRAC.
11 IGM Number of energy groups, required if Blocks 17*, 18*, 25*, 26* are read,
otherwise enter 0 as it is internally set.
12 IHT Position of total cross-section in cross-section table
= 0 (internally set)
13 HIS Position of self-scatter cross-section in cross-section table
= 0 (internally set)
14 IHM Length of cross-section table
= 0 (internally set)
67