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===== cycvt

This set of archetypes have been develop to support CVT collaborators works.

This contains the following archetypes:

- special_enrich: the enrichment facility has been developed based on the
  [cycamore](https://github.com/cyclus/cycamore) enrichment archetype, but
  allowing the tracking of isotopes other than u235 and u238.

special_enricht

The special enrich archetypes is based on the cycamore::enrichement archetype (see). The Cycamore enrichement only allows u235 and u238 to go into the product and send all the other nuclides present in the feed into the waste. The special_enrich archetype allows user to keep them (or a fraction of them) in the product. To do so, one can specify for any nuclide (other than u235 and u238) the relative enrichement ratio (relative to u235 enrichment ratio) to allows the special enrichment archetypes to determine the amount of this special nuclide to add to the product. Example of configuration for the special enrich:

<enrich_efficiencies>
    <item>
        <comp>U236</comp>
        <eff>0.2</eff>
    </item>
</enrich_efficiencies>

In this case, the ratio of the enrichment (feed over product) for the u236 will be 0.2 time the ratio of the enrichment (feed over product) of the u235. The enrichment are considered for each nuclide as mass of nuclide over the total mass.

Note: the author are aware of the accuracy limit of this mobilisation of a multi-isotope enrichment, and this implementation do not aims to have any realistic representation.