CCC-0351 FALSTF.

FALSTF, Neutron Flux and Gamma Flux Detector Response Outside Cylindrical Shields

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROBLEM OR FUNCTION, METHOD OF SOLUTION, RESTRICTIONS, TYPICAL RUNNING TIME, FEATURES, AUXILIARIES, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM 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: FALSTF.

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2. COMPUTERS

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Program name	Package id	Status	Status date
FALSTF	CCC-0351/01	Tested	16-NOV-1983

Machines used:

Package ID	Orig. computer	Test computer
CCC-0351/01	IBM 3081	IBM 3081

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3. DESCRIPTION OF PROBLEM OR FUNCTION

FALSTF is a multigroup kernel- integration code which uses response functions to calculate activities for detectors located at points external to a shielding configuration.

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4. METHOD OF SOLUTION

FALSTF makes calculations using as input either an emergent particle density or fluxes calculated by the discrete ordinates transport (DOT) code for two-dimensional cylindrical geometry. Doses can be calculated for one or more detectors.
FALSTAF calculates response contributions from (user-determined) regions within the configuration and sums over the regions to obtain the total response. Both the last flight contribution by region and total response are output by the code. FALSTF will permit the input of a top boundary source and will include the source contribution in the total calculation.
The code can include the effects of a collimator or of a partially-shadowed detector.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

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6. TYPICAL RUNNING TIME

No study has been made by RSIC of typical running times for FALSTF.

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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
CCC-0351/01	16-NOV-1983	Tested at NEADB

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10. REFERENCES:

CCC-0351/01, included references:

- Van Baker and R.L. Childs:
FALSTF: Informal Notes. (1979)

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11. MACHINE REQUIREMENTS

FALSTF is operable on either the IBM 360 or IBM 370 series of computers or the CDC computers.

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12. PROGRAMMING LANGUAGE(S) USED

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

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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:

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15. NAME AND ESTABLISHMENT OF AUTHOR

Contributed by: Radiation Safety Information Computational Center
Oak Ridge National Laboratory
Oak Ridge, Tennessee, U. S. A.

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16. MATERIAL AVAILABLE

CCC-0351/01

File name	File description	Records
CCC0351_01.001	FALSTF INFORMATION FILE	76
CCC0351_01.002	DOT-3.5 SOURCE PROGRAM (FORTRAN-4)	5990
CCC0351_01.003	DOT-3.5 INPUT DATA (FT05F001)	45
CCC0351_01.004	DOT-3.5 BINARY OUTPUT (FT20F001)	24
CCC0351_01.005	DOT-3.5 JCL	64
CCC0351_01.006	FALSTF SOURCE PROGRAM (FORTRAN-4)	1976
CCC0351_01.007	AUXILIARY BSAM ROUTINES (ASSEMBLER)	421
CCC0351_01.008	ICLOCK SOURCE (ASSEMBLER)	90
CCC0351_01.009	FALSTF INPUT DATA (FT05F001)	40
CCC0351_01.010	FALSTF PRINTED OUTPUT (FT06F001)	259
CCC0351_01.011	FALSTF JCL	40

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17. CATEGORIES

J. Gamma Heating and Shield Design

Keywords: cylindrical, gamma detectors, kernels, multigroup, neutron detectors, neutrons, response functions, shielding, two-dimensional.