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

[ Flow of the SRAC calculation for the sample problem]
UO2F -------------------------------------------------------------------------------------------------------------------
READ CASE NAME
Read case name from the standard input in ‘A4’ format.
Some members to be stored in PDS files are named for this case name.
READ OPTION CONTROL
Read input data to control calculation flow. (cf. Sect.2.2 from Block-1 to -4)
READ FILE CONTROL
Read input data on PDS files and energy group structure.(cf. Sect.2.2, from Block-5 to -10)
PREPARE USER FAST AND THERMAL LIBRARY
Almost no action in this sample. (cf. Sect.2.3)
READ GEOMETRY FOR PIJ
Read input data for PIJ. (cf. Sect.2.4)
READ MATERIAL COMPOSITION
Read material specifications such as isotope composition and temperature. (cf. Sect.2.9)
COMPOSE USER LIBRARY
Compose the User Fast and Thermal Libraries by extracting and compiling the cross-section
data of required nuclides from the Public Fast and Thermal Libraries. The 90-group
cross-sections in the User Libraries are produced by collapsing 107-group ones in the Public
Libraries with an asymptotic neutron spectrum (χ + 1/E + Maxwellian).
CALL MACRO-FAST
Compose effective microscopic and macroscopic cross-sections of each material in the fast
energy range by the NR approximation, and store them in the MICREF and MACROWRK
file, respectively.
CALL MACRO-THERMAL
Compose effective microscopic and macroscopic cross-sections of each material in the
thermal energy range by the NR approximation, and store them in the MICREF and
MACROWRK file, respectively.
CALL GAM
Form the macroscopic transport corrected cross-sections of each material. By choice of the
option (IC16 in Sect.2.2), the P 1 or B 1 equation with an appropriate input buckling is solved
for the cell homogenized by simple smearing of atomic number densities. Then, using the
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