Computer Programs

NEA-0247 CYGAS.

NEA-0247 CYGAS.

CYGAS, 3-D Gamma Flux in Axial or Cylindrical Shields from Cylindrical Source

NAME OR DESIGNATION OF PROGRAM, COMPUTER, NATURE OF PHYSICAL PROBLEM SOLVED, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, FEATURES, AUXILIARIES, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED, OTHER RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: CYGAS.

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2. COMPUTERS

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Program name	Package id	Status	Status date
CYGAS	NEA-0247/01	Tested	01-APR-1969

Machines used:

Package ID	Orig. computer	Test computer
NEA-0247/01	IBM 360 series	IBM 360 series

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3. NATURE OF PHYSICAL PROBLEM SOLVED

CYGAS computes the gamma flux and dose in three dimensional geometry around a cylindrical source of finite height, shielded by coaxial infinite cylindrical shields in the radial direction and slab shields in the axial direction.

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4. METHOD OF SOLUTION

The axial flux at each specified dosepoint is determined by integration of the disk source kernel with Taylor buildup factor for a plane source included. The radial flux at each dose point specified by r-z coordinates is calculated by integration of the line source kernel with Taylor build up factor included.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

The programme handles (50) regions of different material and (10) different build up factors.

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6. TYPICAL RUNNING TIME: Depends on input (about 1-2 minutes).

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7. UNUSUAL FEATURES: UNUSUAL FEATURES OF THE PROGRAM

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8. RELATED OR AUXILIARY PROGRAMS: RELATED AND AUXILIARY PROGRAMS

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9. STATUS

Package ID	Status date	Status
NEA-0247/01	01-APR-1969	Tested at NEADB

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10. REFERENCES

- T.O. Sauar:
CYGAS - An Attenuation Code for Large Cylindrical Gamma Sources with Multilayer Shields

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11. MACHINE REQUIREMENTS: 32k.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-0247/01	FORTRAN-IV

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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED: KIRA drum SCOPE V2.02.

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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

      T.O. Sauar
      Institutt for Atomenergi
      Norway

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16. MATERIAL AVAILABLE

NEA-0247/01

File name	File description	Records
NEA0247_01.001	SOURCE & DATA 360/65	659
NEA0247_01.002	OUTPUT	146

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17. CATEGORIES

J. Gamma Heating and Shield Design

Keywords: buildup, dose rates, gamma radiation, kernels, r-z, shielding, three-dimensional.