Computer Programs
PSR-0017 COOLC.
last modified: 01-MAR-1971 | catalog | categories | new | search |

PSR-0017 COOLC.

COOLC, Ne-213 Liquid Scintillation Detector Neutron Spectra Unfolding

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1. NAME OR DESIGNATION OF PROGRAM:  COOLC.
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2. COMPUTERS
To submit a request, click below on the link of the version you wish to order. Rules for end-users are available here.
Program name Package id Status Status date
COOLC PSR-0017/01 Tested 01-NOV-1971

Machines used:

Package ID Orig. computer Test computer
PSR-0017/01 IBM 360 series IBM 360 series
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3. NATURE OF PHYSICAL PROBLEM SOLVED

COOLC is designed to calculate a  neutron energy spectrum from a pulse-height spectrum produced by a detector system using the liquid scintillator NE-213.
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4. METHOD OF SOLUTION

The program estimates the counts which would be  observed in an ideal detector system having a response which is specified by the user. The solution implicitly takes into account the non-negativity of the desired neutron spectrum. The solution is obtained by finding a nearly optimal combination of slices through the spectrometer response functions such that their sum approximates the response of a channel of the ideal analyzer, and then uses the coefficients so determined to obtain an estimate of the desired neutron spectrum.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:  There are none noted.
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6. TYPICAL RUNNING TIME

Estimated running time of the two packaged sample problems is 2 minutes on IBM 360/75.
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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
PSR-0017/01 01-NOV-1971 Tested at NEADB
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10. REFERENCES
PSR-0017/01, included references:
- Bert W. Rust and Walter R. Burrus:
  "Suboptimal Methods for Solving Estimation Problems"
  TPR-0145 (DASA 2604) (January 1971).
- W.R. Burrus and V.V. Verbinski:
  "Fast-Neutron Spectroscopy with Thick Organic Scintillators"
  ORNL-TM-2225 (June 1968).
- Informal Notes.
- C.E. Clifford, E.A. Straker, F.J. Muckenthaler, V.V. Verbinski,
  R.M. Freestone, Jr., K.M. Henry, and W.R. Burrus:
  "Measurements of the Spectra of Uncollided Fission Neutrons
  Transmitted Through Thick Samples of Nitrogen, Oxygen, Carbon, and
  Lead. Investigation of the Minima in Total Cross Sections"
  Nucl.Sci.Eng.27, 299-307 (1967).
- W.R. Burrus and C. Schneeberger:
  "A Simple Algorithm for Computing the Generalized Inverse of a
  Matrix"
  Communications of the ACM, Vol. 9, No. 5, 381-385 (May 1966).
- V.V. Verbinski, J.C. Courtney, and N. Betz:
  "A Method of Evaluating Fast-Neutron Differential Scattering
  Cross Sections With Short Experimental Runs"
  N.I.M. 52, 181-192 (1967).
- R.K. Heath:
  "Data Processing Techniques for Routine Application of Gamma-Ray
  Scintillation Spectrometry"
  TID-7594, 147-158, Symposium (1960).
- W. Zobel:
  "Spectrometry for Gamma Rays from Proton-Bombarded Nuclei"
  ORNL-3360, 306-309 (1969).
- L. Harris, Jr., H. Kendrick, Y.D. Naliboff, and S.M. Sperling:
  "Time-Dependent Fast Neutron and Secondary Gamma Ray Spectrum
  Measurements in Concrete"
  GA-9751, Vol. II (DASA 2401-2) Appendix B (November 1969).
- H. Kendrick and S.M. Sperling:
  "An Introduction to the Principles and Use of the FERDOR Unfolding
  Code"
  GA-9882 (January 1970).
- W.R. Burrus:
  "Utilization of A Priori Information by Means of Mathematical
  Programming in the Statistical Interpretation of Measured
  Distributions"
  ORNL-3743 (June 1965).
- R.S. Booth:
  "A Comparison of Folding and Unfolding Techniques for Determining
  the Gamma Spectrum from Thermal Neutron Capture in Aluminum"
  N.I.M. 85, 69-76 (1970).
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11. MACHINE REQUIREMENTS

COOLC is operable on the IBM 360. For the sample problem approximately 300k bytes are required.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
PSR-0017/01 FORTRAN-IV
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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED:  A
standard ASA FORTRAN IV compiler may be used.
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14. ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

A
provision is included for arranging the observed pulse-height spectrum in appropriate bins. The program requires the user to furnish a matrix of actual response functions and one of idealized response functions.
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15. NAME AND ESTABLISHMENT OF AUTHOR

Neutron Physics Division
Oak Ridge National Laboratory
Oak Ridge
Tennessee.
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16. MATERIAL AVAILABLE
PSR-0017/01
File name File description Records
PSR0017_01.001 SOURCE PROGRAMME + INPUT DATA FOR SAMPLE CAS 2037
PSR0017_01.002 OUTPUT LIST OF SAMPLE CASE 2366
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17. CATEGORIES
  • O. Experimental Data Processing

Keywords: fast neutrons, neutron spectra, pulsed neutron techniques.