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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. Only liaison officers are authorised to submit online requests. Rules for requesters 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.