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NEA-0817 ENTOSAN.

ENTOSAN, 640 Group Constant Calculation with Resonance from ENDF/B

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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1. NAME OR DESIGNATION OF PROGRAM:  ENTOSAN.
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2. COMPUTERS
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Program name Package id Status Status date
ENTOSAN NEA-0817/01 Tested 08-MAR-1985
ENTOSAN NEA-0817/02 Tested 30-JUN-1992

Machines used:

Package ID Orig. computer Test computer
NEA-0817/01 CDC CYBER 175 CDC CYBER 740
NEA-0817/02 CDC CYBER 175 DEC VAX 8810
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3. DESCRIPTION OF PROBLEM OR FUNCTION

Calculation of fine group cross section values from ENDF/B data. An extended SAND-II type, 640-group data set, with energy range 0.1 meV to 20 MeV is computed.
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4. METHOD OF SOLUTION

Contributions to the fine group cross sections  from parameters for resolved and unresolved resonances are computed, without including the effect of Doppler broadening. To these are added contributions from point cross section data, obtained by integrating over each energy group using the interpolation formula specified in the ENDF/B file. A constant neutron spectrum across each fine energy group is assumed.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:
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6. TYPICAL RUNNING TIME

Varies from about 1 s for a simple (n,p) reaction to about 16 s for a complicated (n,f) reaction.
NEA-0817/01
The test case was executed by NEA-DB on CDC CYBER 740 in 66.l4 CPU seconds.
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7. UNUSUAL FEATURES OF THE PROGRAM

Resonance contributions are treated sequentially, so that the central memory need contain the parameters for only one resonance at a time.
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8. RELATED AND AUXILIARY PROGRAMS:
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9. STATUS
Package ID Status date Status
NEA-0817/01 08-MAR-1985 Tested at NEADB
NEA-0817/02 30-JUN-1992 Tested at NEADB
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10. REFERENCES

- W.J. Zijp, W.P. Voorbraak, H.C. Rieffe, H.J. Nolthenius, "Com-
  parison of Two Fine Group Cross Section Libraries Resulting from
  the ENDF/B-V Dosimetry File", ECN-97 (August, 1981).
NEA-0817/01, included references:
- H.Ch. Rieffe, H.J. Nolthenius and W.L. Zijp :
  ENTOSAN - A Program for the Calculation of Fine Group Cross
  Section Values from ENDF/B Data.  ECN-93 (April, 1981).
NEA-0817/02, included references:
- H.Ch. Rieffe, H.J. Nolthenius and W.L. Zijp :
  ENTOSAN - A Program for the Calculation of Fine Group Cross
  Section Values from ENDF/B Data.  ECN-93 (April, 1981).
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11. MACHINE REQUIREMENTS

About 31,000 octal words of memory, exact exact amount depends on reaction details.
NEA-0817/01
To run the test case on CDC CYBER 740, 105,400 (octal)  words of main storage (CM) are required.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-0817/01 FORTRAN-IV
NEA-0817/02 FORTRAN-77
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:  NOS/BE.
NEA-0817/01
The test case was executed on CDC CYBER 740 under NOS 1.4-531.

NEA-0817/02
VMS V5.3 (VAX 8810).
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
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15. NAME AND ESTABLISHMENT OF AUTHOR

          Henk Ch. Rieffe, Henk J. Nolthenius, Willem J. Zijp
          Netherlands Energy Research Foundation ECN
          P.O. Box 1
          1755 ZG Petten (NH)
          The Netherlands
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16. MATERIAL AVAILABLE
NEA-0817/01
File name File description Records
NEA0817_01.003 INFORMATION FILE 34
NEA0817_01.004 JCL TO RUN THE TEST CASE 14
NEA0817_01.005 ENTOSAN SOURCE PROGRAM (FORTRAN-4) 628
NEA0817_01.006 ENDF/B-V DATA FOR TEST CASE 1493
NEA0817_01.007 ENTOSAN TEST CASE INPUT DATA 3
NEA0817_01.008 TEST ROUTINE DCADRE 384
NEA0817_01.009 ENTOSAN TEST CASE PRINTED OUTPUT 131
NEA-0817/02
File name File description Records
NEA0817_02.001 Information file 50
NEA0817_02.002 ENTOSAN FORTRAN source program 694
NEA0817_02.003 DCADRE function for integration procedure 384
NEA0817_02.004 ENDF/B-V data library for test problem 1493
NEA0817_02.005 ENTOSAN input sample problem 3
NEA0817_02.006 ENTOSAN output sample problem 131
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17. CATEGORIES
  • B. Spectrum Calculations, Generation of Group Constants and Cell Problems

Keywords: ENDF/B, cross sections, interpolation, resolved region, resonance, unresolved region.