Computer Programs

IAEA1416 SIGACE.

IAEA1416 SIGACE.

SIGACE, Code for Doppler broadening of ACE-formatted files

NAME, COMPUTER, PROBLEM, SOLUTION, CPU, AUXILIARIES, STATUS, REFERENCES, LANGUAGE, OTHER RESTRICTIONS, AUTHOR, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM

SIGACE.

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2. COMPUTERS

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Program name	Package id	Status	Status date
SIGACE	IAEA1416/01	Tested	21-AUG-2006

Machines used:

Package ID	Orig. computer	Test computer
IAEA1416/01	Linux-based PC,PC Windows	Linux-based PC,PC Windows

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3. DESCRIPTION OF PROGRAM OR FUNCTION

SIGACE provides a method for generating high temperature ACE files for use with the MCNP code starting with a lower temperature file.

IAEA1416/01

The code has been adapted to run under Linux.

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4. METHODS

The low temperature ACE file is first converted to ENDF formatted file using the ACELST code and then Doppler broadened, essentially limited to the data in the resolved resonance region, to any desired higher temperature using SIGMA1. The SIGACE code then generates a high temperature ACE file for use with the MCNP code. A thinning routine has also been introduced in the SIGACE code for reducing the size of the ACE files. The Doppler Broadened ACE file can then again be converted to ENDF file and graphically plotted using EVALPLOT and compared with other ENDF file using COMPLOT routines of the PREPRO code system for validation purposes.

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6. TYPICAL RUNNING TIME

The execution times are strongly dependent on the number of points in the source ACE file: the enclosed sample problems require from 30 to 3000 seconds.

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8. RELATED OR AUXILIARY PROGRAMS

EVALPLOT and COMPLOT. The original DOS/WINDOWS version of the code system allows to plot for comparison the source ACE file with the output Doppler broadened file by means of the COMPLOT code, whose DOS executable is included in the package; in the current version this feature has been maintained for DOS/WINDOWS, but COMPLOT is not available for linux.

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9. STATUS

Package ID	Status date	Status
IAEA1416/01	21-AUG-2006	Tested at NEADB

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10. REFERENCES

IAEA1416/01, included references:

- Amit R.Sharma, S. Ganesan, A. Trkov:
The SIGACE Package for Generating High Temperature ACE Files - USER Manual,
IAEA-NDS-212 (17 January 2005)

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
IAEA1416/01	FORTRAN-77

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

IAEA1416/01

The original DOS/WINDOWS version of the code system allows plotting for comparison of the source ACE file with the output Doppler broadened file by means of the COMPLOT code, whose DOS executable is included in the package; in the current version this feature has been maintained for DOS/WINDOWS, but COMPLOT is not available for linux.

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15. NAME AND ESTABLISHMENT OF AUTHORS

Contributed by the IAEA Nuclear Data Section

Authors
Amit R. Sharma
Institute for Plasma Research, Bhat, Gandhinagar-382428, India

S. Ganesan
Gujarat India Reactor Physics Design, Bhabha Atomic Research Center Mumbai-40085, India

A. Trkov (Contact)
Nuclear Data Section, International Atomic Energy Agency A-1400 Vienna, Austria
IAEA research contract: 302-F4-IND-11566 B5-IND-29641

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16. MATERIAL AVAILABLE

IAEA1416/01

Flib folder: source code of the ACELST, SIGMA1 and SIGACE code.
Bin folder : executables of ACELST, SIGACE and SIGMA1 codes.
COMPLOT - EVALPLOT folder: executables of COMPLOT and EVALPLOT.
(included for the sake of completeness and to display the output of the test
runs).
Test folder: 5 sub-folders that contain the test input files.
Docs folder: documentation
See also http://www-nds.iaea.org/fendl21/

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17. CATEGORIES

A. Cross Section and Resonance Integral Calculations
L. Data Preparation

Keywords: Doppler broadening, Monte Carlo method, cross sections.