Changes between Version 13 and Version 14 of GuarDyan_PhysModel


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Timestamp:
Feb 13, 2018, 3:56:16 PM (7 years ago)
Author:
dieda
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  • GuarDyan_PhysModel

    v13 v14  
    2121The subcritical model was a 30 cm radius water sphere with 61 UO,,2,, cylindrical fuel rods of 40 cm length, 1 cm radius spaced 1 cm apart from each other see Fig. 1.. Uranium was 4.7% enriched and fuel rod density was taken as 10.5g/cm^3^.
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    23 [[Image(UOH2O_geometry.png​, 400px, title=Geometry of the subcritical verification model)]] \\ ''Figure 1.: Geometry of the subcritical verification model''
     23[[Image(UOH2O_geometry.png​, 800px, title=Geometry of the subcritical verification model)]] \\ ''Figure 1.: Geometry of the subcritical verification model''
    2424
    2525Similarly, a time-energy spectrum is registered in this case as well.
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    2929For each isotope a figure has been created for visual inspection see Fig. 2. Separate figures are energy spectra of the number of particles crossing the sphere outer surface divided by the starting particle number, each figure belongs to a separate time interval.
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    31 [[Image(B-011_1e-6MeV.png​​, 400px, title=Example of Time-Energy Spectra comparison graphs)]] \\ ''Figure 2.: Example of Time-Energy Spectra comparison graphs for ^11^Be, 10^-6^ MeV''
     31[[Image(B-011_1e-6MeV.png​​, 800px, title=Example of Time-Energy Spectra comparison graphs)]] \\ ''Figure 2.: Example of Time-Energy Spectra comparison graphs for ^11^Be, 10^-6^ MeV''
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    4141With each $\chi$^2^ calculated, we obtain N= 412 x 5 energies . These results are summarized in Fig.3. in a histogram.
    4242
    43 [[Image(chi_square_histogram.jpg​​, 400px, title=Reduced Chi-squared histogram)]] \\ ''Figure 3.: Reduced $\chi$^2^ histogram ''
     43[[Image(chi_square_histogram.jpg​​, 800px, title=Reduced Chi-squared histogram)]] \\ ''Figure 3.: Reduced $\chi$^2^ histogram ''
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    4545As Fig. 3 shows GUARDYAN and MCNP results agree very well within statistics having the majority of the cases with match within 1.5$\sigma$.
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    77 [[Image(UOH2O_mcnp_vs_guardyan.png​​, 400px, title=Verification results for a subcritical assembly)]] \\ ''Figure 4.: Verification results for a subcritical assembly ''
     77[[Image(UOH2O_mcnp_vs_guardyan.png​​, 800px, title=Verification results for a subcritical assembly)]] \\ ''Figure 4.: Verification results for a subcritical assembly ''
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