Computer Programs
NEA-1676 ERRORJ-2.3.
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NEA-1676 ERRORJ-2.3.

ERRORJ-2.3, Multigroup covariance matrices generation from ENDF-6 format

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1. NAME OR DESIGNATION OF PROGRAM

ERRORJ-2.3.

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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
ERRORJ-2.3 NEA-1676/07 Tested 16-JUN-2010

Machines used:

Package ID Orig. computer Test computer
NEA-1676/07 Linux-based PC Linux-based PC,PC Windows
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3. DESCRIPTION OF PROGRAM OR FUNCTION

ERRORJ produces multigroup covariance matrices from ENDF-6 format following mainly the methods of the ERRORR module in NJOY94.105.

 

Additional features in ERRORJ with respect to the NJOY94.105/ERRORR module:

  • expands processing for the covariance matrices of resolved and unresolved resonance parameters

  • processes average cosine of scattering angle and fission spectrum

  • treats cross-correlation between different materials and reactions

  • accepts input of multigroup constants with various forms (user input, GENDF, etc.)

  • outputs files with various formats through utility NJOYCOVX (COVERX format, correlation matrix, relative error and standard deviation)

  • uses a 1% sensitivity method for processing of resonance parameters

  • ERRORJ can process the JENDL-3.2 and 3.3 covariance matrices.

 

Additional features of the version 2 with respect to the previous version of ERRORJ:

  • Since the release of version 2, ERRORJ has been modified to increase its reliability and stability,

  • calculation of the correlation coefficients in the resonance region,

  • Option for high-speed calculation is implemented,

  • Perturbation amount is optimised in a sensitivity calculation,

  • Effect of the resonance self-shielding can be considered,

  • a compact covariance format (LCOMP=2) proposed by N. M. Larson can be read.

 

Additional features of the version 2.2.1 with respect to the previous version of ERRORJ:

  • Several routines were modified to reduce calculation time. The new one needs shorter calculation time (50-70%) than the old version without changing results.

  • In the U233 and Pu241 files of JENDL-3.3 an inconsistency between resonance parameters in MF=32 and those in MF=2 was corrected.

 

NEA-1676/07: ERRORJ-2.3

ERRORJ2.2.1 was modified to reduce the calculation time and to make it easy to incorporate ERRORJ into the NJOY code system.

In May 2010, two bugs were found in the FORTRAN source. This information was documented/reported to the author.

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4. METHODS

ERRORJ

  • expands processing for the covariances of resolved and unresolved resonance parameters

  • processes average cosine of scattering angle and fission spectrum

  • it accepts input of multigroup constants with various forms (user input, GENDF, etc)

  • outputs files with various formats through utility NJOYCOVX (COVERX format, correlation matrix, relative error and standard deviation)

  • uses a 1% sensitivity method for processing of resonance parameters

 

ERRORJ 2

  • calculation of correlation coefficients in the resonance region

 

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6. TYPICAL RUNNING TIME

Running time is case dependent. (e.g. TEST U238: 177.4s in PC-Windows/XP Intel Pentium 3.2GHz).

 

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8. RELATED OR AUXILIARY PROGRAMS

NJOYCOVX: this program produces the coverx format file of covariance data from the output covariance file of errorr module, developed by K.Kosako (SAEI).

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9. STATUS
Package ID Status date Status
NEA-1676/07 16-JUN-2010 Tested at NEADB
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10. REFERENCES
  • "Preparation of a Covariance Processing System for the Evaluated Nuclear Data File, JENDL ", PNC PJ9037 97-001 (1997), PNC TJ9037 98-001 (1998), JNC TJ9440 99-003 (1999)

  • K. Kosako: Covariance Data processing Code: ERRORJ, Specialist's meeting of reactor constants, Tokai, February 22-23, 2001

  • R.E. MacFarlane and D.W. Muir: The NJOY Nuclear Data Processing System, Version 91. LA-12740-M (October 1994)

NEA-1676/07, included references:
- Go Shiba:
ERRORJ - A Code to Process Neutron-nuclide Reaction Cross Section Covariance,
Version 2.3 (JAEA-Data/Code 2007-007, January 2007)
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11. HARDWARE REQUIREMENTS

ERRORJ-2.3 has been tested at the NEA Databank on on PC-linux/windows operating systems.

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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-1676/07 FORTRAN-77
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13. SOFTWARE REQUIREMENTS

A Fortran 77 compiler is required to compile the codes.

The NEA Data Bank tested ERRORJ-2.3 on PC-Windows/XP using Compaq Visual Fortran 6.6A and PC-linux/Fedora12 using Intel Fortran Compiler V10.1. No executables are included with the package.

 

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15. NAME AND ESTABLISHMENT OF AUTHORS

Go Chiba
Reactor Physics Research Group
Japan Atomic Energy Agency
2-4, Shirane, Shirakata, Tokai-mura
Ibaraki, 319-1195
Japan

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16. MATERIAL AVAILABLE
NEA-1676/07
ERRORJ-2.3 Manual
test input (including data files) and output for U238
ERRORJ source codes
njoycovx: A program to convert output file
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17. CATEGORIES
  • B. Spectrum Calculations, Generation of Group Constants and Cell Problems
  • Z. Data

Keywords: ENDF, covariance matrices, cross sections, multigroup, sensitivity analysis.