Sökning: WFRF:(Helgesson Petter) >
On the use of integ...
On the use of integral experiments for uncertainty reduction of reactor macroscopic parameters within the TMC methodology
-
- Alhassan, Erwin (författare)
- Uppsala universitet,Tillämpad kärnfysik,Nuclear Research Group
-
- Sjöstrand, Henrik (författare)
- Uppsala universitet,Tillämpad kärnfysik,Nuclear Reactions Group
-
- Helgesson, Petter (författare)
- Uppsala universitet,Tillämpad kärnfysik,Nuclear Reactions Group
-
visa fler...
-
- Österlund, Michael (författare)
- Uppsala universitet,Tillämpad kärnfysik,Nuclear Reaction Group
-
- Pomp, Stephan (författare)
- Uppsala universitet,Tillämpad kärnfysik,Nuclear Reactions Group
-
- Koning, Arjan J. (författare)
- Uppsala universitet,Tillämpad kärnfysik,Int Atom Energy Commiss IAEA, Nucl Data Sect, Vienna, Austria,Nuclear reaction group
-
- Rochman, Dmitri (författare)
- Paul Scherrer Inst, CH-5232 Villigen, Switzerland,Laboratory for Reactor Physics Systems Behaviour, Paul Scherrer Institut, Villigen, Switzerland
-
visa färre...
-
(creator_code:org_t)
- Elsevier BV, 2016
- 2016
- Engelska.
-
Ingår i: Progress in nuclear energy (New series). - : Elsevier BV. - 0149-1970 .- 1878-4224. ; 88, s. 43-52
- Relaterad länk:
-
https://urn.kb.se/re...
-
visa fler...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- The current nuclear data uncertainties observed in reactor safety parameters for some nuclides call for safety concerns especially with respect to the design of GEN-IV reactors and must therefore be reduced significantly. In this work, uncertainty reduction using criticality benchmark experiments within the Total Monte Carlo methodology is presented. Random nuclear data libraries generated are processed and used to analyze a set of criticality benchmarks. Since the calculated results for each random nuclear data used are different, an algorithm was used to select (or assign weights to) the libraries which give a good description of experimental data for the analyses of the benchmarks. The selected or weighted libraries were then used to analyze the ELECTRA reactor. By using random nuclear data libraries constrained with only differential experimental data as our prior, the uncertainties observed were further reduced by constraining the files with integral experimental data to obtain a posteriori uncertainties on the k(eff). Two approaches are presented and compared: a binary accept/reject and a method of assigning file weights based on the likelihood function. Significant reductions in (PU)-P-239 and Pb-208 nuclear data uncertainties in the k(eff) were observed after implementing the two methods with some criticality benchmarks for the ELELIRA reactor. (C) 2015 Elsevier Ltd. All rights reserved.
Ämnesord
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Nyckelord
- Nuclear data
- uncertainty reduction
- binary accept/reject
- file weights
- Total Monte Carlo
- criticality benchmarks
- ELECTRA
- Fysik med inriktning mot tillämpad kärnfysik
- Physics with specialization in Applied Nuclear Physics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas