NEA-0283 ZEUS-ALB.5.

ZEUS-ALB.5, 3-D 1 Group Neutron Transport Kinetics in Slits, Channels, Tunnels 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, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED, OTHER RESTRICTIONS, AUTHOR, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: ZEUS-ALB.5.

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2. COMPUTERS

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Program name	Package id	Status	Status date
ZEUS-ALB.5	NEA-0283/01	Tested	01-OCT-1971

Machines used:

Package ID	Orig. computer	Test computer
NEA-0283/01	IBM 360 series	IBM 360 series

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3. NATURE OF PHYSICAL PROBLEM SOLVED

Solution of the mono-kinetic neutron transport equation in three-dimensional geometry.
This particular version of the programme ZEUS is used to study the propagation of neutrons in slits, tunnels or channels, whose width is small in comparison with its length or whose sigma-t is very small in comparison with that of its surroundings. These conditions are necessary and sufficient to justify the use of the albedo idea on the boundaries.

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4. METHOD OF SOLUTION

Monte Carlo with modifications as in ZEUS. The nature of the problem requires the frequent use of angular bias on the emission of neutrons and during the calculation, as well as, in the case of fast neutrons, a good knowledge of the albedos for grazing incidence (Maerker model or cosine model).

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Monokinetic problems. The programme dimensions correspond to that of an IBM 7094.

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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

LEONIE-5 modifies the source neutron tape.
AVARIE-5 studies the statistical variance of the results.
MAGGY-5 prepares punched data cards describing the geometry from approximate data.

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9. STATUS

Package ID	Status date	Status
NEA-0283/01	01-OCT-1971	Tested at NEADB

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10. REFERENCES: - Note CEA n. 933 - rapport CEA - R- 3491.

NEA-0283/01, included references:

- F. Gervaise, M-M. d'Hombres:
Variante du Programme ZEUS appliquee a des Problemes de Tunnels
Programme ZEUS ALB.5 et Programmes Auxiliaires (Note CEA-N-933 Mayi 1968)
- External Information on ZEUS-ALB.5 testing (ENEA CPL Dec. 71)

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11. MACHINE REQUIREMENTS: One tape unit.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-0283/01	FORTRAN-IV

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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED: O.S.

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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 AUTHORS

NAME AND ESTABLISHMENT OF AUTHOR. F. Gervaise
                                  DEP/SEPP - CEN/FAR.
                                  B.P. No. 6
                                  92 Fontenay-aux-Roses
                                  France

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16. MATERIAL AVAILABLE

NEA-0283/01

File name	File description	Records
NEA0283_01.001	SOURCE PROGRAM	2057
NEA0283_01.002	INPUT DATA FOR SAMPLE CASE	281
NEA0283_01.003	AVARIE SOURCE PROGRAM	703
NEA0283_01.004	AVARIE DATA FOR SAMPLE CASE	610
NEA0283_01.005	MAGGIE SOURCE PROGRAM + DATA FOR SAMPLE CASE	659
NEA0283_01.006	MARGO SOURCE PROGRAM + DATA FOR SAMPLE CASE	458
NEA0283_01.007	PRINTED OUTPUT OF AVARIE SAMPLE CASE	1747
NEA0283_01.008	PRINTED OUTPUT OF ZEUS-ALB.5 CASE	1243
NEA0283_01.009	PRINTED OUTPUT OF MAGGIE SAMPLE CASE	690
NEA0283_01.010	PRINTED OUTPUT OF MARGO SAMPLE CASE	600

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17. CATEGORIES

F. Space - Time Kinetics, Coupled Neutronics - Hydrodynamics - Thermodynamics

Keywords: Monte Carlo method, kinetics, neutron transport theory, three-dimensional.