NEA-0867 FOURACES.
FOURACES, MultiGroup Cross-Sections, Resonance Calculation from ENDF/B, KEDAK, UKNDL
NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROBLEM OR FUNCTION, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES
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| Program name | Package id | Status | Status date |
|---|---|---|---|
| FOURACES | NEA-0867/01 | Tested | 08-JUL-1982 |
Machines used:
| Package ID | Orig. computer | Test computer |
|---|---|---|
| NEA-0867/01 | IBM 3033 | IBM 3033 |
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3. DESCRIPTION OF PROBLEM OR FUNCTION
FOURACES produces spectrum weighted, group averaged nuclear cross sections and related parameters for nuclear reactor calulations. ENDF/B-IV, ENDF/B-V, KEDAK or UKNDL libraries may be used as basic input data. The weighting function and energy group structure are arbitrary, and are specified by the user.
The code can deal with single or multi-level Breit-Wigner Adler- Adler and Reich-Moore resonance formalisms, and includes a Doppler broadening option.
FOURACES produces spectrum weighted, group averaged nuclear cross sections and related parameters for nuclear reactor calulations. ENDF/B-IV, ENDF/B-V, KEDAK or UKNDL libraries may be used as basic input data. The weighting function and energy group structure are arbitrary, and are specified by the user.
The code can deal with single or multi-level Breit-Wigner Adler- Adler and Reich-Moore resonance formalisms, and includes a Doppler broadening option.
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4. METHOD OF SOLUTION
If the weighting function is simple enough group averaged quantities are computed from the point data and interpolation rule read from the evaluated data library using analytic formulae. Otherwise the integrations are performed using the trapezium rule.
Resonance data are converted into point data using subroutines written primarily for the program CRESO (abstract NEA 0719), then Doppler broadened, and finally group averaged.
If the weighting function is simple enough group averaged quantities are computed from the point data and interpolation rule read from the evaluated data library using analytic formulae. Otherwise the integrations are performed using the trapezium rule.
Resonance data are converted into point data using subroutines written primarily for the program CRESO (abstract NEA 0719), then Doppler broadened, and finally group averaged.
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6. TYPICAL RUNNING TIME
The required CPU time on an IBM 360/75 was:
a) 38 seconds for 26 groups, C-12 and U-235 using UKNDL.
b) 31 seconds for 99 groups, U-233 using ENDF/B with Doppler broa- dening.
c) 2 minutes 43 seconds for 26 groups, U-235, using KEDAK.
NEA-DB compiled and executed the test case on IBM 3033 in 184 sec.
The required CPU time on an IBM 360/75 was:
a) 38 seconds for 26 groups, C-12 and U-235 using UKNDL.
b) 31 seconds for 99 groups, U-233 using ENDF/B with Doppler broa- dening.
c) 2 minutes 43 seconds for 26 groups, U-235, using KEDAK.
NEA-DB compiled and executed the test case on IBM 3033 in 184 sec.
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NEA-0867/01, included references:
- G.C. Panini:FOUR ACES - A Programme for Producing Group Averaged Cross
Sections from Different Files. RT/FI(73)16 (May 28, 1973).
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11. MACHINE REQUIREMENTS
The code, including buffers, requires less than 240 kbytes on a IBM 360/75. In addition to standard input and output units a library tape input, a card-image output and a scratch unit with enough space for 5000 four word records are required.
On IBM 3033 316 kbytes are required,.
The code, including buffers, requires less than 240 kbytes on a IBM 360/75. In addition to standard input and output units a library tape input, a card-image output and a scratch unit with enough space for 5000 four word records are required.
On IBM 3033 316 kbytes are required,.
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NEA-0867/01
| File name | File description | Records |
|---|---|---|
| NEA0867_01.003 | FOURACES INFORMATION FILE | 16 |
| NEA0867_01.004 | FOURACES SOURCE CARD IMAGES (FORTRAN-4) | 11916 |
| NEA0867_01.006 | FOURACES SOURCE CARD IMAGES (ASSEMBLER) | 176 |
| NEA0867_01.007 | FOURACES OVERLAY CONTROL CARDS | 42 |
| NEA0867_01.008 | LIBRARY DATA FOR SAMPLE CASE | 23203 |
| NEA0867_01.009 | FOURACES INPUT FOR SAMPLE CASE | 6 |
| NEA0867_01.010 | FOURACES OUTPUT OF SAMPLE CASE | 1122 |
| NEA0867_01.011 | FOURACES JCL FOR SAMPLE CASE | 30 |
Keywords: ENDF/B, KEDAK, UKNDL, cross sections, group constants, multigroup.