Investigation of the continuous-energy sensitivity methods in SCALE 6.2 using TSUNAMI-3D

Elizabeth L. Jones, G. Ivan Maldonado, William J. Marshall, Christopher M. Perfetti, Bradley T. Rearden

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

The SCALE 6.1 code system includes a multigroup (MG) method for three-dimensional (3D) sensitivity analyses via the Tools for Sensitivity and UNcertainty Analysis Methodology Implementation (TSUNAMI), and the upcoming release of SCALE 6.2 will feature the system's first implementation of continuous-energy (CE) sensitivity methods. Detailed information regarding the CE TSUNAMI-3D eigenvalue sensitivity methods is provided in a companion paper. This work compares the results of TSUNAMI-3D calculations using the traditional MG approach to the new CE CLUTCH method in SCALE 6.2. The systems examined in this study include combinations of fast, thermal, and mixed spectra with metal, compound, and solution material forms. The primary fissile species include low-enriched uranium, intermediate-enriched uranium, high-enriched uranium, plutonium, and mixed uranium and plutonium. This broad range of systems expands the experience base with the CE CLUTCH method, identifies best practices for using the code, and provides generic user guidance for utilizing this new capability. Additionally, the study demonstrates the accuracy and usefulness of the CE CLUTCH method, especially for systems for which MG methods perform poorly.

Original languageEnglish
Title of host publicationICNC 2015 - International Conference on Nuclear Criticality Safety
PublisherAmerican Nuclear Society
Pages801-812
Number of pages12
ISBN (Electronic)9780894487231
StatePublished - 2015
Event2015 International Conference on Nuclear Criticality Safety, ICNC 2015 - Charlotte, United States
Duration: Sep 13 2015Sep 17 2015

Publication series

NameICNC 2015 - International Conference on Nuclear Criticality Safety

Conference

Conference2015 International Conference on Nuclear Criticality Safety, ICNC 2015
Country/TerritoryUnited States
CityCharlotte
Period09/13/1509/17/15

Funding

This work was supported by the US Department of Energy Nuclear Criticality Safety Program and was funded and managed by the National Nuclear Security Administration.

Keywords

  • CLUTCH
  • Continuous-energy
  • Multigroup
  • Sensitivity coefficients
  • TSUNAMI-3D

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