1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
*DECK SCRSXS
SUBROUTINE SCRSXS(NGRP,NL,NREA,IREAF,NOMREA,LXS,B2SAP,FACT0,
1 WEIGHT,SPH,FLUXS,XSB,SIGSB,SS2DB,LPURE,XS,SIGS,SS2D,TAUXFI)
*
*-----------------------------------------------------------------------
*
*Purpose:
* Weight microscopic cross section data in an interpolated microlib.
*
*Copyright:
* Copyright (C) 2017 Ecole Polytechnique de Montreal
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version
*
*Author(s):
* A. Hebert
*
*Parameters: input
* NGRP number of energy groups
* NL maximum Legendre order (NL=1 is for isotropic scattering)
* NREA number of reactions in the Saphyb object
* IREAF position of 'NU*FISSION' reaction in NOMREA array
* NOMREA names of reactions in the Saphyb object
* LXS existence flag of each reaction
* B2SAP buckling as recovered from the Saphyb object
* FACT0 number density ratio for the isotope
* WEIGHT interpolation weight
* SPH SPH factors
* FLUXS averaged flux
* XSB cross sections per reaction for a unique calculation
* SIGSB scattering cross sections for a unique calculation
* SS2DB scattering matrix for a unique calculation
* LPURE =.true. if the interpolation is a pure linear interpolation
* with TERP factors.
*
*Parameters: input/output
* XS interpolated cross sections per reaction
* SIGS interpolated scattering cross sections
* SS2D interpolated scattering matrix
* TAUXFI interpolated fission rate
*
*-----------------------------------------------------------------------
*
IMPLICIT NONE
*----
* SUBROUTINE ARGUMENTS
*----
INTEGER NGRP,NL,NREA,IREAF
INTEGER I, IGR, IL, IREA, IRF, J, JGR
REAL TAUXF, XSECT
REAL B2SAP,FACT0,WEIGHT,SPH(NGRP),FLUXS(NGRP),XSB(NGRP*NREA),
1 SIGSB(NGRP*NL),SS2DB(NL*NGRP*NGRP),XS(NGRP*NREA),SIGS(NGRP*NL),
2 SS2D(NGRP*NGRP*NL),TAUXFI
CHARACTER NOMREA(NREA)*12
LOGICAL LXS(NREA),LPURE
*----
* COMPUTE FISSION RATE FOR AN ELEMENTARY CALCULATION
*----
TAUXF=0.0
IF(.NOT.LPURE.AND.(IREAF.GT.0)) THEN
DO IGR=1,NGRP
IRF=(IREAF-1)*NGRP+IGR
TAUXF=TAUXF+XSB(IRF)*FLUXS(IGR)
ENDDO
TAUXFI=TAUXFI+WEIGHT*FACT0*TAUXF
ENDIF
*----
* MICROLIB INTERPOLATION
*----
DO IGR=1,NGRP
DO IREA=1,NREA
IF(.NOT.LXS(IREA)) CYCLE
I=(IREA-1)*NGRP+IGR
IF(LPURE.AND.NOMREA(IREA).EQ.'SPECTRE') THEN
XS(I)=XS(I)+WEIGHT*XSB(I)
ELSE IF(NOMREA(IREA).EQ.'SPECTRE') THEN
XS(I)=XS(I)+WEIGHT*FACT0*TAUXF*XSB(I)
ELSE IF(NOMREA(IREA).EQ.'FUITES') THEN
IF(B2SAP.NE.0.0) THEN
XSECT=XSB(I)/B2SAP
XS(I)=XS(I)+SPH(IGR)*FACT0*WEIGHT*XSECT
ENDIF
ELSE IF(NOMREA(IREA).EQ.'TOTALE P1') THEN
XS(I)=XS(I)+FACT0*WEIGHT*XSB(I)/SPH(IGR)
ELSE
XS(I)=XS(I)+FACT0*SPH(IGR)*WEIGHT*XSB(I)
ENDIF
ENDDO
DO IL=1,NL
I=(IL-1)*NGRP+IGR
IF(MOD(IL,2).EQ.1) THEN
SIGS(I)=SIGS(I)+FACT0*SPH(IGR)*WEIGHT*SIGSB(I)
ELSE
DO JGR=1,NGRP
J=(IL-1)*NGRP*NGRP+(IGR-1)*NGRP+JGR
SIGS(I)=SIGS(I)+FACT0*WEIGHT*SS2DB(J)/SPH(JGR)
ENDDO
ENDIF
ENDDO
DO JGR=1,NGRP
DO IL=1,NL
I=(IL-1)*NGRP*NGRP+(JGR-1)*NGRP+IGR
IF(MOD(IL,2).EQ.1) THEN
SS2D(I)=SS2D(I)+FACT0*SPH(JGR)*WEIGHT*SS2DB(I)
ELSE
SS2D(I)=SS2D(I)+FACT0*WEIGHT*SS2DB(I)/SPH(IGR)
ENDIF
ENDDO
ENDDO
ENDDO
RETURN
END
|
