PSR-0014 O5S.

O5S, Calibration of Organic Scintillation Detector by Monte-Carlo

NAME OR DESIGNATION OF PROGRAM, COMPUTER, NATURE OF PHYSICAL PROBLEM SOLVED, METHOD OF SOLUTION, RESTRICTIONS, CPU, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED, ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, AUTHOR, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: O5S.

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2. COMPUTERS

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Program name	Package id	Status	Status date
O5S	PSR-0014/01	Tested	01-APR-1971

Machines used:

Package ID	Orig. computer	Test computer
PSR-0014/01	IBM 360 series	IBM 360 series

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3. NATURE OF PHYSICAL PROBLEM SOLVED

O5S is designed to directly simulate the experimental techniques used to obtain the pulse height distribution for a parallel beam of mono-energetic neutrons incident on organic scintillator systems. Developed to accurately calibrate the nominally 2 in. by 2 in. liquid organic scintillator NE-213 (composition CH-1.2), the programme should be readily adaptable to many similar problems.

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4. METHOD OF SOLUTION

O5S is a Monte Carlo programme patterned after the general-purpose Monte Carlo neutron transport programme system, O5R. The O5S Monte Carlo experiment follows the course of each neutron through the scintillator and obtains the energy-deposits of the ions produced by elastic scatterings and reactions. The light pulse produced by the neutron is obtained by summing up the contributions of the various ions with the use of appropriate light vs. ion-energy tables.
Because of the specialized geometry and simpler cross section needs O5S is able to by-pass many features included in O5R. For instance, neutrons may be followed individually, their histories analyzed as they occur, and upon completion of the experiment, the results analyzed to obtain the pulse-height distribution during one pass on the computer.
O5S does allow the absorption of neutrons, but does not allow splitting or Russian roulette (biased weighting schemes).
SMOOTHIE is designed to smooth O5S histogram data using Gaussian functions with parameters specified by the user.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

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6. TYPICAL RUNNING TIME

TYPICAL RUNNING TIME. No study of typical running time has been made by RSIC

Estimated running time of the packaged sample problem: XSECT, 2 minutes; O5S, 2 minutes.

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7. UNUSUAL FEATURES OF THE PROGRAM

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8. RELATED AND AUXILIARY PROGRAMS

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9. STATUS

Package ID	Status date	Status
PSR-0014/01	01-APR-1971	Tested at NEADB

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10. REFERENCES

- R.E. Textor and V.V. Verbinski:
  "O5S: A Monte Carlo Code for Calculating Pulse Height
  Distributions due to Monoenergetic Neutrons Incident on Organic
  Scintillators,"
  ORNL-4160 (1968).

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11. MACHINE REQUIREMENTS: IBM 360 - 2 tape units.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
PSR-0014/01	FORTRAN-IV

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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED: OS 360.

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14. ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

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15. NAME AND ESTABLISHMENT OF AUTHORS

NAME AND ESTABLISHMENT OF AUTHOR- Computing Technology Center and
                                  Oak Ridge National Laboratory
                                  Union Carbide Nuclear Division
                                  Oak Ridge
                                  Tennessee
-
                                  NASA Lewis Research Centre
                                  Cleveland
                                  Ohio

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16. MATERIAL AVAILABLE

PSR-0014/01

File name	File description	Records
PSR0014_01.001	XSECT SOURCE PROGRAM + INPUT DATA	2615
PSR0014_01.002	O5S SOURCE PROGRAM + INPUT DATA	2963
PSR0014_01.003	O5S ASSEMBLER ROUTINES	604
PSR0014_01.004	SMOOTHIE SOURCE PROGRAM + INPUT DATA	1169
PSR0014_01.005	PRINTED OUTPUT OF XSECT SAMPLE CASE	467
PSR0014_01.006	PRINTED OUTPUT OF O5S SAMPLE CASE	394
PSR0014_01.007	PUNCHED OUTPUT OF O5S SAMPLE CASE	60
PSR0014_01.008	PRINTED OUTPUT OF SMOOTHIE SAMPLE CASE	286

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17. CATEGORIES

O. Experimental Data Processing

Keywords: Monte Carlo method, pulsed neutron techniques.