ON THE CREATION OF THE NEW ENDF/B-VIII.0 COVARIANCE LIBRARY FOR SCALE APPLICATIONS WITH AMPX

F. Bostelmann; A. M. Holcomb; D. Wiarda; W. A. Wieselquist

doi:10.13182/M&C21-33705

ON THE CREATION OF THE NEW ENDF/B-VIII.0 COVARIANCE LIBRARY FOR SCALE APPLICATIONS WITH AMPX

F. Bostelmann, A. M. Holcomb, D. Wiarda, W. A. Wieselquist

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

A new revision of the ENDF/B nuclear data library, ENDF/B-VIII.0, was released in 2018. The AMPX code system was used to generate a new covariance library based on this release for the application with the SCALE code system. The presence of invalid matrix elements required the implementation of a procedure for correcting correlation matrices in AMPX. The new covariance library was used in uncertainty analyses of a light water reactor and a sodium-cooled fast reactor fuel pin cell to assess: (1) the impact of the correlation matrix corrections and (2) the impact of the changes in nuclear data from ENDF/B-VII.1 to ENDF/B-VIII.0. The correction of the correlation matrices in case of invalid matrix elements led to up to a ~10% decrease in uncertainties for several investigated output quantities. Updates of relevant cross section uncertainties in ENDF/B-VIII.0 data led to significant changes in various output quantities, ranging from ~88% decreased uncertainties to up to ~150% increased uncertainties. In particular, updates in ^235/238U n,γ, ^235/238U χ, ²³⁸U inelastic scattering, ²³⁹Pu fission, and ⁵⁶Fe and ¹⁶O elastic scattering were found to be relevant.

Original language	English
Title of host publication	Proceedings of the International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021
Publisher	American Nuclear Society
Pages	808-818
Number of pages	11
ISBN (Electronic)	9781713886310
DOIs	https://doi.org/10.13182/M&C21-33705
State	Published - 2021
Event	2021 International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021 - Virtual, Online Duration: Oct 3 2021 → Oct 7 2021

Publication series

Name	Proceedings of the International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021

Conference

Conference	2021 International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021
City	Virtual, Online
Period	10/3/21 → 10/7/21

Funding

This work was sponsored by the US Nuclear Regulatory Commission, Office of Nuclear Regulatory Research, and the Nuclear Criticality Safety Program, which is funded and managed by the National Nuclear Security Administration for the US Department of Energy. Marco Pigni’ s work on updating the 235U ENDF file for the ENDF/B-VIII.0 nuclear data library is highly appreciated. *This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

Keywords

AMPX
ENDF/B-VIII.0
SCALE
covariance data
uncertainty analysis

Access to Document

10.13182/M&C21-33705

Cite this

Bostelmann, F., Holcomb, A. M., Wiarda, D., & Wieselquist, W. A. (2021). ON THE CREATION OF THE NEW ENDF/B-VIII.0 COVARIANCE LIBRARY FOR SCALE APPLICATIONS WITH AMPX. In Proceedings of the International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021 (pp. 808-818). (Proceedings of the International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021). American Nuclear Society. https://doi.org/10.13182/M&C21-33705

Bostelmann, F. ; Holcomb, A. M. ; Wiarda, D. et al. / ON THE CREATION OF THE NEW ENDF/B-VIII.0 COVARIANCE LIBRARY FOR SCALE APPLICATIONS WITH AMPX. Proceedings of the International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021. American Nuclear Society, 2021. pp. 808-818 (Proceedings of the International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021).

@inproceedings{bb1d13d4f40c4d8a94289e946323f4a3,

title = "ON THE CREATION OF THE NEW ENDF/B-VIII.0 COVARIANCE LIBRARY FOR SCALE APPLICATIONS WITH AMPX",

abstract = "A new revision of the ENDF/B nuclear data library, ENDF/B-VIII.0, was released in 2018. The AMPX code system was used to generate a new covariance library based on this release for the application with the SCALE code system. The presence of invalid matrix elements required the implementation of a procedure for correcting correlation matrices in AMPX. The new covariance library was used in uncertainty analyses of a light water reactor and a sodium-cooled fast reactor fuel pin cell to assess: (1) the impact of the correlation matrix corrections and (2) the impact of the changes in nuclear data from ENDF/B-VII.1 to ENDF/B-VIII.0. The correction of the correlation matrices in case of invalid matrix elements led to up to a ~10% decrease in uncertainties for several investigated output quantities. Updates of relevant cross section uncertainties in ENDF/B-VIII.0 data led to significant changes in various output quantities, ranging from ~88% decreased uncertainties to up to ~150% increased uncertainties. In particular, updates in 235/238U n,γ, 235/238U χ, 238U inelastic scattering, 239Pu fission, and 56Fe and 16O elastic scattering were found to be relevant.",

keywords = "AMPX, ENDF/B-VIII.0, SCALE, covariance data, uncertainty analysis",

author = "F. Bostelmann and Holcomb, {A. M.} and D. Wiarda and Wieselquist, {W. A.}",

note = "Publisher Copyright: Copyright {\textcopyright} 2021 AMERICAN NUCLEAR SOCIETY, INCORPORATED, LA GRANGE PARK, ILLINOIS 60526.All rights reserved.; 2021 International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021 ; Conference date: 03-10-2021 Through 07-10-2021",

year = "2021",

doi = "10.13182/M&C21-33705",

language = "English",

series = "Proceedings of the International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021",

publisher = "American Nuclear Society",

pages = "808--818",

booktitle = "Proceedings of the International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021",

}

Bostelmann, F , Holcomb, AM , Wiarda, D & Wieselquist, WA 2021, ON THE CREATION OF THE NEW ENDF/B-VIII.0 COVARIANCE LIBRARY FOR SCALE APPLICATIONS WITH AMPX. in Proceedings of the International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021. Proceedings of the International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021, American Nuclear Society, pp. 808-818, 2021 International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021, Virtual, Online, 10/3/21. https://doi.org/10.13182/M&C21-33705

ON THE CREATION OF THE NEW ENDF/B-VIII.0 COVARIANCE LIBRARY FOR SCALE APPLICATIONS WITH AMPX. / Bostelmann, F.; Holcomb, A. M.; Wiarda, D. et al.
Proceedings of the International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021. American Nuclear Society, 2021. p. 808-818 (Proceedings of the International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - ON THE CREATION OF THE NEW ENDF/B-VIII.0 COVARIANCE LIBRARY FOR SCALE APPLICATIONS WITH AMPX

AU - Bostelmann, F.

AU - Holcomb, A. M.

AU - Wiarda, D.

AU - Wieselquist, W. A.

PY - 2021

Y1 - 2021

N2 - A new revision of the ENDF/B nuclear data library, ENDF/B-VIII.0, was released in 2018. The AMPX code system was used to generate a new covariance library based on this release for the application with the SCALE code system. The presence of invalid matrix elements required the implementation of a procedure for correcting correlation matrices in AMPX. The new covariance library was used in uncertainty analyses of a light water reactor and a sodium-cooled fast reactor fuel pin cell to assess: (1) the impact of the correlation matrix corrections and (2) the impact of the changes in nuclear data from ENDF/B-VII.1 to ENDF/B-VIII.0. The correction of the correlation matrices in case of invalid matrix elements led to up to a ~10% decrease in uncertainties for several investigated output quantities. Updates of relevant cross section uncertainties in ENDF/B-VIII.0 data led to significant changes in various output quantities, ranging from ~88% decreased uncertainties to up to ~150% increased uncertainties. In particular, updates in 235/238U n,γ, 235/238U χ, 238U inelastic scattering, 239Pu fission, and 56Fe and 16O elastic scattering were found to be relevant.

AB - A new revision of the ENDF/B nuclear data library, ENDF/B-VIII.0, was released in 2018. The AMPX code system was used to generate a new covariance library based on this release for the application with the SCALE code system. The presence of invalid matrix elements required the implementation of a procedure for correcting correlation matrices in AMPX. The new covariance library was used in uncertainty analyses of a light water reactor and a sodium-cooled fast reactor fuel pin cell to assess: (1) the impact of the correlation matrix corrections and (2) the impact of the changes in nuclear data from ENDF/B-VII.1 to ENDF/B-VIII.0. The correction of the correlation matrices in case of invalid matrix elements led to up to a ~10% decrease in uncertainties for several investigated output quantities. Updates of relevant cross section uncertainties in ENDF/B-VIII.0 data led to significant changes in various output quantities, ranging from ~88% decreased uncertainties to up to ~150% increased uncertainties. In particular, updates in 235/238U n,γ, 235/238U χ, 238U inelastic scattering, 239Pu fission, and 56Fe and 16O elastic scattering were found to be relevant.

KW - AMPX

KW - ENDF/B-VIII.0

KW - SCALE

KW - covariance data

KW - uncertainty analysis

UR - http://www.scopus.com/inward/record.url?scp=85183597308&partnerID=8YFLogxK

U2 - 10.13182/M&C21-33705

DO - 10.13182/M&C21-33705

M3 - Conference contribution

AN - SCOPUS:85183597308

T3 - Proceedings of the International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021

SP - 808

EP - 818

BT - Proceedings of the International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021

PB - American Nuclear Society

T2 - 2021 International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021

Y2 - 3 October 2021 through 7 October 2021

ER -

Bostelmann F , Holcomb AM , Wiarda D , Wieselquist WA. ON THE CREATION OF THE NEW ENDF/B-VIII.0 COVARIANCE LIBRARY FOR SCALE APPLICATIONS WITH AMPX. In Proceedings of the International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021. American Nuclear Society. 2021. p. 808-818. (Proceedings of the International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021). doi: 10.13182/M&C21-33705

ON THE CREATION OF THE NEW ENDF/B-VIII.0 COVARIANCE LIBRARY FOR SCALE APPLICATIONS WITH AMPX

Abstract

Publication series

Conference

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this