Nuclear data sensitivity and uncertainty analysis of effective neutron multiplication factor in various MYRRHA core configurations

Romojaro Otero, Pablo and Álvarez-Velarde, Francisco and Kodeli, I. and Stankovskiy, Alexey and Díez, C. J. and Cabellos, O. and García Herranz, Nuria and Heyse, Jan and Schillebeeckx, Peter and Van den Eynde, Gert and Zerovnik, Gasper (2017). Nuclear data sensitivity and uncertainty analysis of effective neutron multiplication factor in various MYRRHA core configurations. "Annals of Nuclear Energy", v. 101 ; pp. 330-338. ISSN 0306-4549. https://doi.org/10.1016/j.anucene.2016.11.027.

Description

Title: Nuclear data sensitivity and uncertainty analysis of effective neutron multiplication factor in various MYRRHA core configurations
Author/s:
  • Romojaro Otero, Pablo
  • Álvarez-Velarde, Francisco
  • Kodeli, I.
  • Stankovskiy, Alexey
  • Díez, C. J.
  • Cabellos, O.
  • García Herranz, Nuria
  • Heyse, Jan
  • Schillebeeckx, Peter
  • Van den Eynde, Gert
  • Zerovnik, Gasper
Item Type: Article
Título de Revista/Publicación: Annals of Nuclear Energy
Date: March 2017
ISSN: 0306-4549
Volume: 101
Subjects:
Freetext Keywords: MYRRHA, Nuclear data, Sensitivity and uncertainty, Covariance, Lead-bismuth cooled fast reactor, ADS
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Energética
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (4MB) | Preview

Abstract

A sensitivity and uncertainty analysis was carried out to estimate the uncertainty in the neutron multiplication factor keff and to identify the most important nuclear data for neutron induced reactions for criticality calculations of the latest MYRRHA designs. Sensitivity profiles, i.e. sensitivity to the nuclear data as a function of incoming neutron energy, were derived for both a critical and sub-critical core. They were calculated using codes that are based on different methodologies including stochastic and deterministic calculations (i.e. SCALE, MCNP and XSUN). The neutron induced nuclear data sensitivity analysis outlined the following quantities to be of special importance for the MYRRHA reactor concept: 239Pu(n,c) both in resonance and fast energy region, (n,f) fast, v and m fast; 238U(n,n0 ) fast, (n,c) resonance and fast, (n,n) resonance and fast; 240Pu m fast; 238Pu(n,f) both resonance and fast; 56Fe(n,c) both resonance and fast. Differences of less than 4% between codes were obtained for these quantities, with few exceptions ( 238Pu(n,f), 238U(n,n) and 56Fe(n,c) reactions). Nuclear data covariance matrices of different libraries (SCALE-6, COMMARA-2 and JENDL-4.0m) were used to derive the uncertainty in keff based on the calculated sensitivities. This study reveals that the largest contributions to keff uncertainty result from the uncertainty in the average prompt neutron fission multiplicity of 239Pu, in the 238U inelastic scattering cross section and 239Pu fission cross section, using the covariances from SCALE-6, COMMARA-2 and JENDL-4.0m, respectively.

Funding Projects

TypeCodeAcronymLeaderTitle
FP7605203CHANDACIEMATsolving CHAllenges in Nuclear DAta

More information

Item ID: 49886
DC Identifier: https://oa.upm.es/49886/
OAI Identifier: oai:oa.upm.es:49886
DOI: 10.1016/j.anucene.2016.11.027
Official URL: https://www.sciencedirect.com/science/article/pii/S030645491630500X?via%3Dihub
Deposited by: Memoria Investigacion
Deposited on: 17 May 2018 15:16
Last Modified: 01 Apr 2019 22:30
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM