NESC0547 GAMB1T
GAMB-1T, Group Constant Library from P1 or B1 Approximation Neutron Spectra in ANISN Format, DOT Format
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 AUTHORS, MATERIAL, CATEGORIES
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To submit a request, click below on the link of the version you wish to order.
Only liaison officers are authorised to submit online requests. Rules for requesters are
available here.
| Program name | Package id | Status | Status date |
|---|---|---|---|
| GAMB-1T | NESC0547/01 | Tested | 01-JUN-1982 |
Machines used:
| Package ID | Orig. computer | Test computer |
|---|---|---|
| NESC0547/01 | CDC 7600 | CDC 7600 |
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4. METHOD OF SOLUTION
GAMB1T provides broad-group flux and current- averaged neutron cross sections. They are based on a thermal cross section library consisting of 99 fine groups (0-2.38 eV), and a fast neutron library consisting of 68 fine groups (0.414 eV - 10 MeV, 1/4 lethargy intervals). The fluxes and currents required to obtain the broad-group cross sections may be calculated with GAMB1T or may be entered into the program. In addition, a Maxwellian spectrum may be used in the thermal range. If the flux is calculated, either the B1 or P1 methods of solving the transport equation may be used. In effect, the steady-state transport equation is solved for an infinite medium problem. The program provides cross sections for a full P1 transport calculation. Cards are punched out in a format suitable for input to the ANISN and DOT discrete-ordinates transport codes.
GAMB1T provides broad-group flux and current- averaged neutron cross sections. They are based on a thermal cross section library consisting of 99 fine groups (0-2.38 eV), and a fast neutron library consisting of 68 fine groups (0.414 eV - 10 MeV, 1/4 lethargy intervals). The fluxes and currents required to obtain the broad-group cross sections may be calculated with GAMB1T or may be entered into the program. In addition, a Maxwellian spectrum may be used in the thermal range. If the flux is calculated, either the B1 or P1 methods of solving the transport equation may be used. In effect, the steady-state transport equation is solved for an infinite medium problem. The program provides cross sections for a full P1 transport calculation. Cards are punched out in a format suitable for input to the ANISN and DOT discrete-ordinates transport codes.
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7. UNUSUAL FEATURES OF THE PROGRAM
B1T solves equations in the
thermal energy range (0 less than or equal e less than or equal
2.38 eV) that are consistent with the equations solved within the
GAM program and comparable to those solved with the GATHER
program. B1T provides fluxes and currents and includes both P0
and P1 scattering matrices in its cross section library. Initial
fine energy group fluxes and currents may be obtained from GAMB1T
which can be used in obtaining broad-group cross sections.
Subsequently fine-group fluxes and currents obtained from a
transport theory calculation may be input to GAMB1T to obtain
improved broad-group cross sections.
B1T solves equations in the
thermal energy range (0 less than or equal e less than or equal
2.38 eV) that are consistent with the equations solved within the
GAM program and comparable to those solved with the GATHER
program. B1T provides fluxes and currents and includes both P0
and P1 scattering matrices in its cross section library. Initial
fine energy group fluxes and currents may be obtained from GAMB1T
which can be used in obtaining broad-group cross sections.
Subsequently fine-group fluxes and currents obtained from a
transport theory calculation may be input to GAMB1T to obtain
improved broad-group cross sections.
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10. REFERENCES
- W.H. Gray and G. Collier:
GAMB1T User's Manual
WANL-TME-1751 (February 1968).
- G. Collier and G. Gibson:
GAMB1T Program
WANL-TME-1752 (April 1968).
- L.L. Moran, G. Collier, A.S. Johnston, and G. Gibson:
Thermal Range Library for GAMB1T Program
WANL-TME-1830 (July 1968).
- G. Collier and L.L. Moran:
Utility Programs for GAMB1T Thermal Range Library
WANL-TME-1970 (October 1969).
- G. Collier, S.A. Fody, G. Gibson, and L.L. Moran:
New Cross Sections for the GAMB1T Library, Tapes FSGAM24 and
CGBIT11
WANL-TME-1965 (October 1969).
- S.A. Fody, G. Gibson, N.A. Nice, and J.L. Wytiaz:
New Cross Sections for the GAMB1T Library, Tapes FSGAM29 and
CGBIT15
WANL-TME-2690 (April 1970).
- W.H. Gray and G. Collier:
GAMB1T User's Manual
WANL-TME-1751 (February 1968).
- G. Collier and G. Gibson:
GAMB1T Program
WANL-TME-1752 (April 1968).
- L.L. Moran, G. Collier, A.S. Johnston, and G. Gibson:
Thermal Range Library for GAMB1T Program
WANL-TME-1830 (July 1968).
- G. Collier and L.L. Moran:
Utility Programs for GAMB1T Thermal Range Library
WANL-TME-1970 (October 1969).
- G. Collier, S.A. Fody, G. Gibson, and L.L. Moran:
New Cross Sections for the GAMB1T Library, Tapes FSGAM24 and
CGBIT11
WANL-TME-1965 (October 1969).
- S.A. Fody, G. Gibson, N.A. Nice, and J.L. Wytiaz:
New Cross Sections for the GAMB1T Library, Tapes FSGAM29 and
CGBIT15
WANL-TME-2690 (April 1970).
NESC0547/01, included references:
- G. Collier, G. Gibson, L.L. Moran, R.K. Disney, and R.S. Kaiser:Second Version of the GAMB1T Code
WANL-TME-1969 (November 1969).
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS
Options included in the second version of GAMB1T are -
(a) the flux and current spectrum calculated in a preceding problem may be reused in a subsequent stacked problem without recalculation,
(b) cross section data in the EXTERMINATOR2 (NESC Abstract 156) two-dimensional diffusion theory code format can be produced,
(c) the total elastic scattering cross section including the anisotropic scattering effect in the center-of-mass system is calculated in the APPROPOS data preparation code format, and
(d) all output may be produced on either cards or magnetic tape or both. All cross section sets that are punched and/or put on tape are printed.
GAMB1T is of limited use to other than CDC6600 installations because the library tapes are in CDC6600 binary format not readily adapted to other machines.
Options included in the second version of GAMB1T are -
(a) the flux and current spectrum calculated in a preceding problem may be reused in a subsequent stacked problem without recalculation,
(b) cross section data in the EXTERMINATOR2 (NESC Abstract 156) two-dimensional diffusion theory code format can be produced,
(c) the total elastic scattering cross section including the anisotropic scattering effect in the center-of-mass system is calculated in the APPROPOS data preparation code format, and
(d) all output may be produced on either cards or magnetic tape or both. All cross section sets that are punched and/or put on tape are printed.
GAMB1T is of limited use to other than CDC6600 installations because the library tapes are in CDC6600 binary format not readily adapted to other machines.
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NESC0547/01
| File name | File description | Records |
|---|---|---|
| NESC0547_01.001 | GAMB-1T INFORMATION | 39 |
| NESC0547_01.002 | GAMB-1T SOURCE PROGRAM (FORTRAN-4) | 4994 |
| NESC0547_01.003 | GAMB-1T ORIGINAL SAMPLE CASE INPUT | 28 |
| NESC0547_01.004 | GAMB-1T MODIFIED SAMPLE CASE INPUT | 30 |
| NESC0547_01.005 | GAMB-1T JCL FOR SAMPLE CASE | 26 |
| NESC0547_01.006 | GAMB-1T OUTPUT OF SAMPLE CASE | 1213 |
| NESC0547_01.007 | FSGA02 LIBRARY TAPE9 | 752 |
| NESC0547_01.008 | B1T2 LIBRARY TAPE11 | 2761 |
| NESC0547_01.009 | QRY12 LIBRARY TAPE12 | 27 |
| NESC0547_01.010 | GAS2 LIBRARY TAPE18 | 1754 |
Keywords: cross sections, multigroup, neutron spectra.