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NEA-1666 HEPROW.

HEPROW, Unfolding of pulse height spectra using Bayes theorem and maximum entropy method

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1. NAME OR DESIGNATION OF PROGRAM:  HEPROW.
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2. COMPUTERS
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Program name Package id Status Status date
HEPROW NEA-1666/02 Tested 01-OCT-2004

Machines used:

Package ID Orig. computer Test computer
NEA-1666/02 IBM PC,PC Windows ALPHA/AXP,IBM PC,Linux-based PC,HP W.S.
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3. DESCRIPTION OF PROGRAM OR FUNCTION

HEPROW unfolds pulse height spectra for use in spectral neutron or photon fluence determination.
  
HEPROW consists of the following programs:
  
- UMSPHW transforms a file containing a measured pulse-height to a file in HEPRO format.
- RSPGW carries out GAUSSIAN broadening of a response matrix, and rebinning of a matrix.
- OPERAW combines HEPRO files and carries out multiplication/division addition/substraction by numbers.
- FALTW folds a fluence file with a response matrix and compares measured and calculated pulse-height spectra.
- GRAVELW is a modified SAND-II code (CCC-0112) for unfolding. (Logarithm of pulse-height spectrum is used).
- UNFANAW is a maximum entropy code for unfolding.
- MIEKEW is a maximum entropy code for unfolding in which uncertainty propagation is performed with a so-called ambiguity term.
- PLOFW plots data files or parts of the response function library on the screen. It may be used for a variety of data formats of the files, including the ENDF format.
- PLOTAW plots control data curves from a plot file created while one of the other codes is running.
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4. METHODS:  The Bayes theorem and the maximum entropy method are used.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM
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6. TYPICAL RUNNING TIME
NEA-1666/02
40 minutes up to 3 hours
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7. UNUSUAL FEATURES
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8. RELATED OR AUXILIARY PROGRAMS
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9. STATUS
Package ID Status date Status
NEA-1666/02 01-OCT-2004 Tested at NEADB
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10. REFERENCES

M. Matzke, "Unfolding of Pulse Height Spectra: The HEPRO Program System", Report PTB-N-19, Physikalisch-Technische Bundesanstalt, Braunschweig, 1994
ISBN 3-89429-543-0
NEA-1666/02, included references:
- Manfred Matzke:
The HEPROW Program System
- Manfred Matzke:
Unfolding Methods
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11. HARDWARE REQUIREMENTS
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-1666/02 FORTRAN-90
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13. SOFTWARE REQUIREMENTS

The source codes were compiled by the author with COMPAQ visual FORTRAN 6.1 professional edition.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS
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15. NAME AND ESTABLISHMENT OF AUTHORS

Manfred Matzke
Physikalisch-Technische Bundesanstalt
D38116 Braunschweig
Germany
http://www.matzke.gmxhome.de/
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16. MATERIAL AVAILABLE
NEA-1666/02
Fortran\  Fortran source files
Ed-ohg\  Sample input and data files
example\  Examples
Plot\   Programs for plotting
Resp\  Response functions
Documentation (htm, doc and pdf formats)
Windows plot programs
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17. CATEGORIES
  • O. Experimental Data Processing

Keywords: fluence, neutrons, photons, spectra unfolding.