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Templates of expected measurement uncertainties

Journal Article · · EPJ Nuclear Sciences and Technologies
DOI:https://doi.org/10.1051/epjn/2023014· OSTI ID:2205722
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  1. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
  2. Naval Nuclear Lab., Schenectady, NY (United States)
  3. Univ. of California, Berkeley, CA (United States)
  4. US Naval Academy, Annapolis, MD (United States)
  5. Argonne National Laboratory (ANL), Argonne, IL (United States)
  6. Lancaster Univ., Bailrigg (United Kingdom)
  7. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
  8. Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
  9. Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden (Germany)
  10. Uppsala Univ. (Sweden)
  11. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
  12. International Atomic Energy Agency (IAEA), Vienna (Austria)
  13. Univ. of Vienna (Austria)
  14. Duke Univ., Durham, NC (United States). Triangle Universities Nuclear Laboratory
  15. Alternative Energies and Atomic Energy Commission (CEA) (France); Centre National de la Recherche Scientifique-Mixed Organizations (CNRS-UMR), Paris (France). Univ. Bordeaux
  16. Brookhaven National Laboratory (BNL), Upton, NY (United States)
  17. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
  18. Univ. of Tennessee, Knoxville, TN (United States)
  19. Commissariat a l'Energie Atomique (CEA), Saclay (France). Université Paris-Saclay
+ Show Author Affiliations
The covariance committee of CSEWG (Cross Section Evaluation Working Group) established templates of expected measurement uncertainties for neutron-induced total, (n,γ), neutron-induced charged-particle, and (n,xn) reaction cross sections as well as prompt fission neutron spectra, average prompt and total fission neutron multiplicities, and fission yields. Templates provide a list of what uncertainty sources are expected for each measurement type and observable, and suggest typical ranges of these uncertainties and correlations based on a survey of experimental data, associated literature, and feedback from experimenters. Information needed to faithfully include the experimental data in the nuclear-data evaluation process is also provided. These templates could assist (a) experimenters and EXFOR compilers in delivering more complete uncertainties and measurement information relevant for evaluations of new experimental data, and (b) evaluators in achieving a more comprehensive uncertainty quantification for evaluation purposes. This effort might ultimately lead to more realistic evaluated covariances for nuclear-data applications. In this topical issue, we cover the templates coming out of this CSEWG effort–typically, one observable per paper. This paper here prefaces this topical issue by introducing the concept and mathematical framework of templates, discussing potential use cases, and giving an example of how they can be applied (estimating missing experimental uncertainties of 235U(n,f) average prompt fission neutron multiplicities), and their impact on nuclear-data evaluations.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP); USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Organization:
Cross Section Evaluation Working Group
Grant/Contract Number:
89233218CNA000001; AC02-98CH10886; AC52-07NA27344; NA0003180; SC0012704; SC0021243
OSTI ID:
2205722
Alternate ID(s):
OSTI ID: 2212462
OSTI ID: 2217510
OSTI ID: 2229633
Report Number(s):
BNL--225031-2023-JAAM; LA-UR--23-23484; LLNL--JRNL-823070; 1035828
Journal Information:
EPJ Nuclear Sciences and Technologies, Journal Name: EPJ Nuclear Sciences and Technologies Vol. 9; ISSN 2491-9292
Publisher:
EDP SciencesCopyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (2)

Table I(p. 11)table Table I
Figure 1(p. 12)figure Figure 1

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