CCC-0126 ASOP.
ASOP, Shield Calculation, 1-D, Discrete Ordinates Transport
NAME OR DESIGNATION OF PROGRAM, COMPUTER, NATURE OF PHYSICAL PROBLEM SOLVED, 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 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 |
|---|---|---|---|
| ASOP | CCC-0126/02 | Tested | 16-APR-1993 |
Machines used:
| Package ID | Orig. computer | Test computer |
|---|---|---|
| CCC-0126/02 | IBM 3033 | IBM 3090 |
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3. NATURE OF PHYSICAL PROBLEM SOLVED
ASOP is a shield optimization calculational system based on the one-dimensional discrete ordinates transport program ANISN. It has been used to design optimum shields for space applications of SNAP zirconium-hydride-uranium- fueled reactors and uranium-oxide fueled thermionic reactors and to design beam stops for the ORELA facility.
ASOP is a shield optimization calculational system based on the one-dimensional discrete ordinates transport program ANISN. It has been used to design optimum shields for space applications of SNAP zirconium-hydride-uranium- fueled reactors and uranium-oxide fueled thermionic reactors and to design beam stops for the ORELA facility.
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4. METHOD OF SOLUTION
ASOP generates coefficients of linear equations describing the logarithm of the dose and dose-weight derivatives as functions of position from data obtained in an automated sequence of ANISN calculations. With the dose constrained to a design value and all dose-weight derivatives required to be equal, the linear equations may be solved for a new set of shield dimensions. Since changes in the shield dimensions may cause the linear functions to change, the entire procedure is repeated until convergence is obtained.
The detailed calculations of the radiation transport through shield configurations for every step in the procedure distinguish ASOP from other shield optimization computer code systems which rely on multiple component sources and attenuation coefficients to describe the transport.
ASOP generates coefficients of linear equations describing the logarithm of the dose and dose-weight derivatives as functions of position from data obtained in an automated sequence of ANISN calculations. With the dose constrained to a design value and all dose-weight derivatives required to be equal, the linear equations may be solved for a new set of shield dimensions. Since changes in the shield dimensions may cause the linear functions to change, the entire procedure is repeated until convergence is obtained.
The detailed calculations of the radiation transport through shield configurations for every step in the procedure distinguish ASOP from other shield optimization computer code systems which rely on multiple component sources and attenuation coefficients to describe the transport.
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CCC-0126/02
NEA-DB executed the test case included in this package on an IBM 3090 computer in 3 minutes 36 seconds of CPU time.[ top ]
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CCC-0126/02, included references:
- Ward W. Engle, JR.:A User's Manual for ASOP, ANISN Shield Optimization Program
CTC-INF-941 (September 1969)
- L.M. Petrie:
Informal Notes on ITIME Assembler Routine
(May 3, 1973)
- ANISN Update
Modifications Included in the July 1988
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CCC-0126/02
To run the test case on an IBM 3090 computer, 3624K bytes of main storage were required.[ top ]
13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED
The
IBM VS FORTRAN compiler with the option 'LANGLVL(66)' was used to execute the sample case. An IBM assembler is required for the ITIME and ALOCAT routines.
The
IBM VS FORTRAN compiler with the option 'LANGLVL(66)' was used to execute the sample case. An IBM assembler is required for the ITIME and ALOCAT routines.
CCC-0126/02
MVS/XA (IBM 3090).[ top ]
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CCC-0126/02
| File name | File description | Records |
|---|---|---|
| CCC0126_02.001 | This information file | 47 |
| CCC0126_02.002 | JCL and control information (NEADB) | 166 |
| CCC0126_02.003 | JCL (author) | 72 |
| CCC0126_02.004 | ASOP FORTRAN IV source program | 1031 |
| CCC0126_02.005 | ANISN FORTRAN IV source program | 3944 |
| CCC0126_02.006 | LOC,ITIME,ALOCAT assembler source subrout. | 158 |
| CCC0126_02.007 | Sample problem input data | 1854 |
| CCC0126_02.008 | Sample problem output | 6674 |
Keywords: design, discrete ordinate method, doses, one-dimensional, optimization, shields.