Neutron multiplicity counting: Confidence intervals for reconstruction parameters
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
From nuclear materials accountability to homeland security, the need for improved nuclear material detection, assay, and authentication has grown over the past decades. Starting in the 1940s, neutron multiplicity counting techniques have enabled quantitative evaluation of masses and multiplications of fissile materials. In this paper, we propose a new method to compute uncertainties on these parameters using a model-based sequential Bayesian processor, resulting in credible regions in the fissile material mass and multiplication space. These uncertainties will enable us to evaluate quantitatively proposed improvements to the theoretical fission chain model. Additionally, because the processor can calculate uncertainties in real time, it is a useful tool in applications such as portal monitoring: monitoring can stop as soon as a preset confidence of non-threat is reached.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1251093
- Report Number(s):
- LLNL-JRNL-668401
- Journal Information:
- Nuclear Science and Engineering, Vol. 182, Issue 4; ISSN 0029-5639
- Publisher:
- American Nuclear SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Correlated prompt fission data in transport simulations
|
journal | January 2018 |
| Correlated Prompt Fission Data in Transport Simulations | text | January 2017 |
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