Computer Programs
NEA-0035 MUPO.
last modified: 01-MAY-1970 | catalog | categories | new | search |

NEA-0035 MUPO.

MUPO, Critical 43 Group Spectra Calculation for Homogeneous Reactor

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1. NAME OR DESIGNATION OF PROGRAM:  MUPO.
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2. COMPUTERS
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Program name Package id Status Status date
MUPO NEA-0035/02 Tested 01-MAY-1970

Machines used:

Package ID Orig. computer Test computer
NEA-0035/02 IBM 360 series IBM 360 series
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3. NATURE OF PHYSICAL PROBLEM SOLVED

MUPO calculates the critical spectrum of a bare homogeneous reactor in 43 groups. This spectrum is used to evaluate condensed microscopic cross-sections.
An option for this programme is to read in the library data from cards and write the binary library tape -DRAGON LIBRARY 3-.
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4. METHOD OF SOLUTION

3 options. Introduction of an additional absorber to account for a control poison, source iteration technique, and a buckling iteration.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:  110 materials.
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6. TYPICAL RUNNING TIME

1 minute on CDC 1604 A. 15 seconds for the test case execution and 2 minutes to generate library tape (7090).
Punched cards output is used as input for various nuclear programmes.
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7. UNUSUAL FEATURES OF THE PROGRAM:  Data library given either as cards or as tape.
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8. RELATED AND AUXILIARY PROGRAMS:  ANGIE, ZOOM, FEVER, BABS, BASS, HELTOT and HELMAI.
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9. STATUS
Package ID Status date Status
NEA-0035/02 01-MAY-1970 Tested at NEADB
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10. REFERENCES
NEA-0035/02, included references:
- Amendment notes to MUPO
- J. Schloesser:
MUPO, An IBM-7090 Programme to Calculate Neutron Spectra
and Multi-group Constants
  D.P. Report 172.
- KDF9 Version of MUPO (DPRDD/1418)
- U. Nyffenegger:
  The Dragon Nuclear Data Library Three
  DP report 420.
- Dragon library
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11. MACHINE REQUIREMENTS:  32k memory and two working tapes.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-0035/02 FORTRAN-IV
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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED

FORTRAN monitor system (IBM 7090).
IBM 360 Operating System.
CO-OP monitor system (CDC 1604 A).
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14. ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

Uses RELOCOM and EXECUTOR on the CDC 1604 A. Change tape channel assignments by altering the first 4 executable statements of the main programme.
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15. NAME AND ESTABLISHMENT OF AUTHOR

      Juergen Schloesser
      Dragon Project
      Winfrith
      U.K.
CDC 1604 version was offered by EIR (Institut Federal de Recherches en matiere de reacteurs, Switzerland).
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16. MATERIAL AVAILABLE
NEA-0035/02
File name File description Records
NEA0035_02.001 SOURCE & OVERLAY CARDS IBM 360 1422
NEA0035_02.002 LIB4 FOR MUPO 3992
NEA0035_02.003 LIB5 FOR MUPO 5987
NEA0035_02.004 OUTPUT 3765
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17. CATEGORIES
  • B. Spectrum Calculations, Generation of Group Constants and Cell Problems
  • C. Static Design Studies

Keywords: buckling, criticality, cross sections, homogeneous reactors, iterative methods, multigroup, neutron spectra, poisoning.