NEA-0390 BRIGITTE.

BRIGITTE, Dose Rate and Heat Source and Energy Flux for Self-Absorbing Rods

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 PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: BRIGITTE.

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2. COMPUTERS

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Program name	Package id	Status	Status date
BRIGITTE	NEA-0390/01	Tested	01-MAY-1978

Machines used:

Package ID	Orig. computer	Test computer
NEA-0390/01	IBM 370 series	IBM 370 series

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3. NATURE OF PHYSICAL PROBLEM SOLVED

Calculation of dose rate, heat sources or energy flux. The sources are self-absorbing radioactive rods. The shielding consists of blocks of which the cross section can be defined.

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4. METHOD OF SOLUTION

Exponential attenuation and build-up factor between source points and detector points. Source integration with error estimate. Automatic or controlled build-up with monitor print-out.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Number of energy points, regions, detector points, abscissa points of the rod, vertical position of the rod, are all limited to ten. The maximum total number of vertical steps is 124.

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6. TYPICAL RUNNING TIME: Under one minute for IBM 360/75.

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7. UNUSUAL FEATURES

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8. RELATED OR AUXILIARY PROGRAMS

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9. STATUS

Package ID	Status date	Status
NEA-0390/01	01-MAY-1978	Tested at NEADB

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10. REFERENCES

- M. Jegu:
ETG.302 NT.66.011
- M.F. Buchard:
ETG.302 NT.65.229

NEA-0390/01, included references:

- Code BRIGITTE - Calculs Relatifs au Rayonnement Gamma emis par une
  Barre Active, Dose - Source de Chaleur - Courant energetique
  Formulation et Hypotheses Physiques
  GAAA EtG 302 NT 66 11 (21 Janvier 1966).
- BRIGITTE2 - Note Programme et Exploitation
  GAAA ETG NT 67 109B (2 Octobre 1968).
- J. Jegu:
  BRIGITTE Modification
  GAAA TP 75.006 (January 3, 1975).

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11. MACHINE REQUIREMENTS: 160k bytes on IBM 360.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-0390/01	FORTRAN-IV

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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED: IBM 360 O.S.

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

Input data
source characteristics with required step.
Detector characteristics with number of points.
Data characterizing the amplification factors to be applied.
Gamma attenuation and absorption constants.

Output

- Flux in MeV/(cm**2 sec), or heat source in W/(cm**3), or dose rate in mrem/hr, including rod surface contributions for each energy, sum of all contributions for all energies, overall sums.
- All above quantities for each detector point and each horizontal and vertical rod position.

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15. NAME AND ESTABLISHMENT OF AUTHOR

  M. Jegu and Mme. Clement
  Novatome
  20, av. Edouard Herriot
  92350 Le Plessis Robinson
  France.

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16. MATERIAL AVAILABLE

NEA-0390/01