
Filters
An inclusion filter is a condition a particle history or branch must meet to be displayed. The filters include
Any, all, or a given number of filters must be satisfied. The tracks can be limited to a specified history or a range of histories. Most filters are set on the Track Filters property page. There is a separate page for history filters and another for Kcode cycle filters.
- Creation type
- Termination type
- Entering a specified cell,
- Interacting within a specified cell,
- Crossing a specified surface
- Interacting within a specified material
- Interacting with a specified isotope
- Having exactly some number of interactions.
- Having at least some number of interactions.
- Having no more than some number of interactions.
Exclusion filters prevent plotting of histories or branches that meet some criteria. The exclusion filters are similar to the inclusion filters. This figureshows the effect of excluding all branches that terminate by escaping the model.
A Step Through mode exists for both histories and Kcode cycles. One history or cycle is shown at a time. Mortiz can automatically sequence through the histories or cycles, showing each one for a specified time. In the manual mode, the user increments or decrements the history or cycle number using the arrow keys. When the 3D window is active, the F7 (F8) key starts the history (cycle) animation. Pressing an arrow key with the 3D window active stops the automatic sequencing and enters the manual mode. Pressing the F6 key stops both the animated and manual modes. Each frame of the animation can be saved for use in making a movie as explained on the Time Animation page.
In a criticality calculation, the fission neutrons produced in one cycle become the sources for the next cycle. For an accurate result, neutrons should evenly sample all of the fissile material; that result is achieved when the source points for a cycle show uniform coverage. A Kcycle animation of the source points shows how the neutrons move through the model and how quickly the model is (or is not) moving to uniform coverage. This Figureshows five frames from a Kcycle animation of a 2 tank aqueous uranyl nitrate solution criticality model. Adequate coverage has been reached by cycle 12.
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