# Difference between revisions of "Flattop k-eff sensitivity example"

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== Description == | == Description == | ||

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+ | The experimental configuration consists of a plutonium alloy sphere (radius 4.5332 cm) reflected by a natural uranium blanket (outer radius 24.1420 cm). The multiplication factor of the system is close to unity (being a critical experiment). This input calculates the sensitivity of the multiplication factor to perturbations applied to the cross sections of <sup>235</sup>U, <sup>238</sup>U, <sup>239</sup>Pu and <sup>240</sup>Pu. A processing script for MATLAB/OCTAVE is provided for printing and plotting out the sensitivities. | ||

== Input == | == Input == |

## Revision as of 11:26, 20 June 2017

This example demonstrates some basic sensitivity calculation capabilities for the Popsy (Flattop) critical experiment (PU-MET-FAST-006 in the ICSBEP handbook).

## Description

The experimental configuration consists of a plutonium alloy sphere (radius 4.5332 cm) reflected by a natural uranium blanket (outer radius 24.1420 cm). The multiplication factor of the system is close to unity (being a critical experiment). This input calculates the sensitivity of the multiplication factor to perturbations applied to the cross sections of ^{235}U, ^{238}U, ^{239}Pu and ^{240}Pu. A processing script for MATLAB/OCTAVE is provided for printing and plotting out the sensitivities.