ATF concepts incorporate novel materials, including SiC and FeCrAl cladding and high density uranium silicide composite fuels, in turn introducing new cross section sensitivities and uncertainties which may behave differently from traditional fuel and cladding materials.
The SUSD3D cross-section sensitivity and uncertainty code together with the 2D/3D deterministic transport code package DOORS is used for the analysis of the experiment.
The paper presents the pre- and post-analysis of the experiment performed using cross-section sensitivity and uncertainty codes, both deterministic (SUSD3D) and Monte Carlo (MCSEN5).
Good agreement between the three methods was observed except for the sodium total and elastic cross-section and the uranium-235 total cross-section sensitivity coefficients where the multi-group adjoint method produced results approximately 14%and7%7% lower than the IFP and CLUTCH methods, respectively.
Individual nuclide cross-section sensitivities for heterogeneous and homogeneous fuel assembly models were calculated using the multi-group adjoint method, the iterated fission probability (IFP) method, and the Contribution-Linked eigenvalue sensitivity/Uncertainty estimation via Track length importance Characterization (CLUTCH) method.
A threshold of nine follicles for follicle counts in a single cross section had a sensitivity of 69% and specificity of 90%.
Figure 4 shows the cross section of the sensitivities of the imagers #16 21 with a filter #1 for the 557.7 nm emission.
Fig. 4 Horizontal cross section of the sensitivities of the all-sky airglow/aurora imager #16 21 measured by an integrating sphere of NIPR. Figure 5 shows examples of an auroral image and keograms for the 630.0 nm emission obtained by these all-sky airglow/aurora imagers on March 30, 2017 during the 1st ERG-ground campaign observations.
The recorded peak areas were consistent with the atomic percentage of the different elements in the Au-porphyrin taking into account the different scattering cross sections and the sensitivity of the analyzer.
The effect of different parameters – the shape and thickness of the membrane, the cross section of the mesa – on the sensitivity of the sensor is analyzed systematically by finite element methods.
In conclusion, by taking advantage of the large scattering cross section of AuNPs and the high sensitivity of DLS measurement, we demonstrated that DLS can be used very conveniently to quantitative studies of DNA.
