NEA-0388 MIGROS.
MIGROS, Group Cross-Sections, Self-Shielding Factors, Scattering Transfer, Fission from KEDAK
NAME OR DESIGNATION OF PROGRAM, COMPUTER, NATURE OF PHYSICAL PROBLEM SOLVED, METHOD OF SOLUTION, RESTRICTIONS, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED, ANY 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 |
|---|---|---|---|
| MIGROS-3 | NEA-0388/04 | Tested | 01-OCT-1979 |
Machines used:
| Package ID | Orig. computer | Test computer |
|---|---|---|
| NEA-0388/04 | IBM 370 series | IBM 370 series |
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3. NATURE OF PHYSICAL PROBLEM SOLVED
Group averaged neutron cross sections, energy resonance self shielding factors, elastic transfer elements up to P5 approximation, the inelastic, (n,2n)- and (n,3n) transfer elements, fission spectra etc. for coarse groups (26 groups in the standard case) in the fast neutron energy range are calculated.
Group averaged neutron cross sections, energy resonance self shielding factors, elastic transfer elements up to P5 approximation, the inelastic, (n,2n)- and (n,3n) transfer elements, fission spectra etc. for coarse groups (26 groups in the standard case) in the fast neutron energy range are calculated.
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4. METHOD OF SOLUTION
Microscopic group cross sections are calculated from pointwise nuclear data, from resolved Breit-Wigner resonance parameters and statistical resonance parameters. Energy resonance self shielding factors are calculated from resolved Breit-Wigner parameters, from statistical parameters and from pointwise tabulated neutron cross sections. The elastic transfer elements are based on experimental angular distributions. The inelastic transfer elements use the resolved excited levels. In the continuum's range a statistical model given by an analytic function or tabulated values are used for the calculation of transfer matrices for inelastic scattering, (n,2n), and (n,3n) reactions. The fission spectra are calculated by the Watt or the Maxwellian formula.
Microscopic group cross sections are calculated from pointwise nuclear data, from resolved Breit-Wigner resonance parameters and statistical resonance parameters. Energy resonance self shielding factors are calculated from resolved Breit-Wigner parameters, from statistical parameters and from pointwise tabulated neutron cross sections. The elastic transfer elements are based on experimental angular distributions. The inelastic transfer elements use the resolved excited levels. In the continuum's range a statistical model given by an analytic function or tabulated values are used for the calculation of transfer matrices for inelastic scattering, (n,2n), and (n,3n) reactions. The fission spectra are calculated by the Watt or the Maxwellian formula.
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10. REFERENCES
REFERENCES.
- B. Krieg:
The KEDAK Program Compendium Part II KEDAK Basic Management
KFK 2387/II (1977)
- H.Hauschke, B. Krieg:
MITRA - A Program for the Transformation of the Output of MIGROS-2 an I an input for GRUMA.
KFK 1810 (1973)
REFERENCES.
- B. Krieg:
The KEDAK Program Compendium Part II KEDAK Basic Management
KFK 2387/II (1977)
- H.Hauschke, B. Krieg:
MITRA - A Program for the Transformation of the Output of MIGROS-2 an I an input for GRUMA.
KFK 1810 (1973)
NEA-0388/04, included references:
- I. Broeders et al.:MIGROS-3, - A Code for the Calculation of Group Constants for
Reactor Calculations from Nuclear Data in KEDAK Format
KFK 2388 (1977)
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14. ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS
It is possible to define the extension of a working field on MIGROS-3 in the core storage by means of the parameter 'REGION' of the JOB-statement of the IBM 370/168 job-control-language. MIGROS-3 has been developed from MIGROS-2 which is not compatible with KEDAK 3. The differences between MIGROS-2 and MIGROS-3 are discussed in the introduction of KFK 2388.
It is possible to define the extension of a working field on MIGROS-3 in the core storage by means of the parameter 'REGION' of the JOB-statement of the IBM 370/168 job-control-language. MIGROS-3 has been developed from MIGROS-2 which is not compatible with KEDAK 3. The differences between MIGROS-2 and MIGROS-3 are discussed in the introduction of KFK 2388.
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NEA-0388/04
source program mag tapesource program mag tape SRCTPtest-case data mag tapetest-case data mag tape DATTP
test-case output mag tapetest-case output mag tape OUTTP
report KFK 2388 (February 1977) REPPT
Keywords: Breit-Wigner formula, KEDAK, cross sections, elastic scattering, fast neutrons, fission spectra, inelastic scattering, resonance, self-shielding.