Computer Programs
NESC0277 HAMMER/LITHE/HELP
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NESC0277 HAMMER/LITHE/HELP

HAMMER, 1-D MultiGroup Neutron Transport Infinite System Cell Calculation for Few-Group Diffusion Calculation

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1. NAME OR DESIGNATION OF PROGRAM:  HAMMER/LITHE/HELP
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2. COMPUTERS
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Program name Package id Status Status date
HAMMER NESC0277/01 Tested 01-MAY-1977

Machines used:

Package ID Orig. computer Test computer
NESC0277/01 IBM 370 series IBM 370 series
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3. DESCRIPTION OF PROBLEM OR FUNCTION

HAMMER   performs    infinite
lattice,  one-dimensional cell  multigroup calculations,  followed
(optionally)  by one-dimensional,  few-group, multiregion  reactor
calculations with neutron balance edits.
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4. METHOD OF SOLUTION

Infinite lattice parameters are calculated by
means of multigroup transport theory, composite reactor parameters
by few-group diffusion theory.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

   Cell calculations - maxima of
         30 thermal groups
         54 epithermal groups
         20 space points
         20 regions
         18 isotopes
         10 mixtures
          3 thermal upscattering mixtures
        200 resonances per group
        no overlap or interference
        single level only
   Reactor calculations - maxima of
         40 regions
         40 mixtures
        250 space points
          4 groups
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6. TYPICAL RUNNING TIME

LITHE requires  1 minute,  HELP 9  minutes,
and HAMMER 2 minutes on the IBM360/65.
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7. UNUSUAL FEATURES OF THE PROGRAM

HAMMER  combines  THERMOS  (NESC
Abstract  184),  MUFT, ZUT,  TUZ,  FOG  (NESC Abstract  28),  plus
thermal Fourier  transform, epithermal  integral transport  space-
dependent group  fluxes, and neutron  balance edits from  a single
set of input data as well as a library of cell results, compatible
reactor/exponential   assembly  criticality   searches  from   the
library.
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8. RELATED AND AUXILIARY PROGRAMS

LITHE prepares a  thermal library
for  the  HAMMER  version  of   THERMOS  and  includes  epithermal
scattering sources.  HELP  prepares an epithermal library  for the
HAMMER  versions  of  MUFT, ZUT,  TUZ,  and  cell  space-dependent
calculations.  It  accepts slightly  modified MUFT  libraries plus
resonance parameters, either probability matrix or inelastic cross
sections.
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9. STATUS
Package ID Status date Status
NESC0277/01 01-MAY-1977 Tested at NEADB
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10. REFERENCES

J.  E. Suich  and H.  C. Honeck,  The HAMMER  System,
DP-1064, January 1967.
             C. E. Bailey, HAMMER/LITHE/HELP Notes, DP Note, March
8, 1971.
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11. MACHINE REQUIREMENTS:  512K bytes and 10 sequential data sets
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NESC0277/01 FORTRAN-IV
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:   OS/360.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
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15. NAME AND ESTABLISHMENT OF AUTHOR

                 H. C. Honeck
                 Savannah River Laboratory
                 E. I. duPont de Nemours and Co., Inc.
                 Aiken, South Carolina  29801
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16. MATERIAL AVAILABLE
NESC0277/01
File name File description Records
NESC0277_01.001 INFORMATION 2
NESC0277_01.002 LITHE SOURCE - FORTRAN IV EBCDIC 440
NESC0277_01.003 LITHE SAMPLE PROBLEM DATA 3911
NESC0277_01.004 LITHE SAMPLE PROBLEM OUTPUT 3479
NESC0277_01.005 LITHE JOB CONTROL 2
NESC0277_01.006 HELP SOURCE - FORTRAN IV EBCDIC 628
NESC0277_01.007 HELP SUBROUTINE 'EFTM' 226
NESC0277_01.008 HELP SAMPLE PROBLEM INPUT 6182
NESC0277_01.009 HELP SAMPLE PROBLEM OUTPUT 8684
NESC0277_01.010 HELP JOB CONTROL 3
NESC0277_01.011 HAMMER SUBROUTINE EFTM - ASSEMBLER 226
NESC0277_01.012 HAMMER SUBROUTINE ERRX - ASSEMBLER 99
NESC0277_01.013 HAMMER SUBROUTINE OPEN - ASSEMBLER 308
NESC0277_01.014 HAMMER SUBROUTINE SETBTF - ASSEMBLER 8
NESC0277_01.015 HAMMER SUBROUTINE TIME - ASSEMBLER 346
NESC0277_01.016 HAMMER SUBROUTINE XLOC - ASSEMBLER 7
NESC0277_01.017 HAMMER SOURCE - F4 OPT=0 FOR F COMPILER 253
NESC0277_01.018 HAMMER SOURCE - F4 OPT=2 FOR F COMPILER 11920
NESC0277_01.019 DUMMY ROUTINES THOR AND HERESY 8
NESC0277_01.020 HAMMER SAMPLE PROBLEM DATA 9
NESC0277_01.021 HAMMER SAMPLE PROBLEM OUTPUT 1228
NESC0277_01.022 HAMMER OVERLAY CARDS 109
NESC0277_01.023 HAMMER JOB CONTROL 7
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17. CATEGORIES
  • B. Spectrum Calculations, Generation of Group Constants and Cell Problems
  • C. Static Design Studies

Keywords: cell calculation, epithermal neutrons, group constants, neutron flux, one-dimensional, thermal neutrons.