IAEA0837 SAMSY.

SAMSY, Neutron and Gamma Dose Rates and Heat Source for Multilayer Shields

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROBLEM OR FUNCTION, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED, OTHER PROGRAMMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: SAMSY - Shielding Analysis Modular System.

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2. COMPUTERS

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Program name	Package id	Status	Status date
SAMSY	IAEA0837/01	Tested	02-APR-1987

Machines used:

Package ID	Orig. computer	Test computer
IAEA0837/01	CDC CYBER 173	CDC CYBER 740

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3. DESCRIPTION OF PROBLEM OR FUNCTION

The SAMSY code calculates multigroup neutron fluxes and dose rate, multigroup gamma ray dose rates and internal heat sources, as a function of distance through large multilayer reactor shields. I D geometries: plane, spheri- cal, cylindrical.

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4. METHOD OF SOLUTION

The code is based on Spiney method for neutron field analysis and on build-up factor method for gamma fields, with two optional approaches to build-up factors evaluation; the first is based on single layer build-up factor conception as in the well- known MAC-RAD code, and the second on the modified Harima-Nishiwaki formula for build-up factors in multilayered media.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM: 26 neutron group, 7 gamma group, 1200 mesh-points.

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6. TYPICAL RUNNING TIME: About 5 minutes for 1200 mesh points on CDC CYBER 73.

IAEA0837/01

NEA-DB executed the test case included in this package on a CDC CYBER 740 computer in 161 seconds of CPU time.

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7. UNUSUAL FEATURES OF THE PROGRAM:

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8. RELATED AND AUXILIARY PROGRAMS

SAMSY is a complete system with its own data library RUSLIB (26 neutron group, 7 gamma group constants for 32 elements) attached to the program.

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9. STATUS

Package ID	Status date	Status
IAEA0837/01	02-APR-1987	Tested at NEADB

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10. REFERENCES

IAEA0837/01, included references:

- L. Szymendera, K. Wincel, L. Sobolewska et al ;
"SAMSY: A One-Dimensional Improved Shielding Code
User's Manual"
INR 1691 (1977)
- K.Wincel, L.Szymendera and I.Sobolewska ;
"Some Practical Application of Gamma Ray Build-Up
Factors for Multilayered Media"
INR 1690 (1977)
- I. Sobolewska, L.Szymendera, K.Wincel;
"A Modified harima-Nishiwaki Formula for Gamma Ray
Build-Up Factors in Multilayered Media"
INR 1689 (1977)

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11. MACHINE REQUIREMENTS

    - 127500 octal high speed memory
    - 30 scratch files and INPUT, OUTPUT files on discs memory
    - Printer

IAEA0837/01

134,400 (octal) words of CM were required for running the test case on an CDC CYBER 740.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
IAEA0837/01	FORTRAN-IV

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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED: Scope 3.4.

IAEA0837/01

NOS2.5.1 664/665 (CDC CYBER 740).

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14. OTHER PROGRAMMMING OR OPERATING INFORMATION OR RESTRICTIONS

The
code has an overlay structure consisting of 7 overlays.

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15. NAME AND ESTABLISHMENT OF AUTHOR

          K. Wincel, I. Sobolewski, D. Kordyasz, A. Polanski
          Institute of Nuclear Research
          Radiation Shielding Group 1977
          Warsaw
          Poland.

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16. MATERIAL AVAILABLE

IAEA0837/01

File name	File description	Records
IAEA0837_01.001	Information file	64
IAEA0837_01.002	JCL control information	17
IAEA0837_01.003	SAMSY source program	2897
IAEA0837_01.004	QUAD and auxiliary subroutine	1060
IAEA0837_01.005	SAMSY sample problem input	37
IAEA0837_01.006	Data Library	1319
IAEA0837_01.007	SAMSY sample problem output	2210
IAEA0837_01.008	SAMSY original sample problem output	2210

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17. CATEGORIES

J. Gamma Heating and Shield Design

Keywords: buildup, dose rates, gamma radiation, multigroup, neutron flux, one-dimensional, shielding.