Computer Programs

NEA-0351 MERCURE.

NEA-0351 MERCURE.

MERCURE, 3-D Gamma Heating and Gamma Dose Rate and Fast Flux by Monte-Carlo

NAME OR DESIGNATION OF PROGRAM, COMPUTER, NATURE OF PHYSICAL PROBLEM SOLVED, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, CPU, FEATURES, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, REQUIREMENTS, LANGUAGE, OPERATING SYSTEM, OTHER RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: MERCURE.

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2. COMPUTERS

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Program name	Package id	Status	Status date
MERCURE-4	NEA-0351/01	Tested	01-SEP-1980

Machines used:

Package ID	Orig. computer	Test computer
NEA-0351/01	IBM 3033	IBM 3033

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3. NATURE OF PHYSICAL PROBLEM SOLVED

The Monte Carlo code MERCURE 4 computes in a three dimensional heterogeneous geometry heating and gamma dose rate, and by the point wise kernel attenuation in straight line, the fast fluxes. Tabulated accumulation factors give the contribution of the scattered gamma rays.
The program calculates accumulation factors for mixtures; for multi- layer media Kitazume formulation is used.
GAMLEG/A produces the multigroup photonic library. The sources can be represented in different geometries. For each geometry, the program works with a homogeneous lattice with plane and quadrical boundaries.

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4. METHOD OF SOLUTION

Random generation of the sources are used. The density is given by S(r,e)*I(r,e). S(r,e) is the sources' distribution function and I(r,e) is a weight function. For each mesh an initial weight function is generated. During the calculations, this function is modified and adjusted on the basis of the preceding results. Calculations stop when precision is reached. By using the Monte Carlo method instead of the discrete ordinates method computer time is reduced considerably.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM: Number of energy groups 21, number of mesh sources 20.

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6. TYPICAL RUNNING TIME

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7. UNUSUAL FEATURES: UNUSUAL FEATURES OF THE PROGRAM

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8. RELATED AND AUXILIARY PROGRAMS: GAMLEG/A to generate the cross sections library.

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9. STATUS

Package ID	Status date	Status
NEA-0351/01	01-SEP-1980	Tested at NEADB

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10. REFERENCES

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11. HARDWARE REQUIREMENTS: MACHINE REQUIREMENTS

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-0351/01	FORTRAN+ASSEMBLER

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13. SOFTWARE REQUIREMENTS: OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

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15. NAME AND ESTABLISHMENT OF AUTHOR

     C. Devillers and C. Dupont
     SERMA/CEN
     Fontenay-Aux-Roses, France

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16. MATERIAL AVAILABLE

NEA-0351/01

File name	File description	Records
NEA0351_01.001	INFORMATION	7
NEA0351_01.002	INTERX SOURCE (F4)	2221
NEA0351_01.003	OVERLAY CARDS FOR INTERX	11
NEA0351_01.004	MERCURE-4 SOURCE (F4)	4774
NEA0351_01.005	OVERLAY CARDS FOR MERCURE-4	19
NEA0351_01.006	JCL TO RUN MERCURE-4	19
NEA0351_01.007	AUXILIARY ROUTINES (F4)	872
NEA0351_01.008	AUXILIARY ROUTINES (ASSEMBLER)	473
NEA0351_01.009	S.P. INPUT DATA FOR INTERX AND MERCURE-4	115
NEA0351_01.010	SACLAY LIBRARY ROUTINES (F4)	619
NEA0351_01.011	SACLAY LIBRARY ROUTINES (ASSEMBLER)	1346
NEA0351_01.012	GAMLEG/A SOURCE (F4)	517
NEA0351_01.013	GAMLEG/A DD CARDS	6
NEA0351_01.014	GAMLEG/A S.P. INPUT DATA	536
NEA0351_01.015	ZEBIB SOURCE (F4)	94
NEA0351_01.016	ZEBIB DD CARDS	4
NEA0351_01.017	ZEBIB S.P. INPUT DATA	651
NEA0351_01.018	PRINTED OUTPUT OF INTERX	197
NEA0351_01.019	PRINTED OUTPUT OF MERCURE-4	912

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17. CATEGORIES

J. Gamma Heating and Shield Design

Keywords: Monte Carlo method, dose rates, gamma radiation, neutron flux, shielding, three-dimensional.