Using F4 Tally on Hexagonal Lattice Geometry

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Discussion Overview

The discussion focuses on the use of F4 tally in hexagonal lattice geometry, specifically in the context of circular fuel assemblies. Participants explore how to average F4 tallies for specific cells across multiple lattice locations.

Discussion Character

  • Technical explanation, Mathematical reasoning

Main Points Raised

  • One participant inquires about the method to use F4 tally in a hexagonal lattice composed of circular fuel assemblies.
  • Another participant asks whether the tally should be separate for each cell or averaged across locations.
  • A participant clarifies the intention to average the F4 tally for the same cell across different lattice locations.
  • A proposed method for averaging the F4 tally is presented, suggesting the use of specific lattice numbers for the cells involved.
  • A participant expresses understanding and appreciation for the provided explanation.

Areas of Agreement / Disagreement

Participants appear to agree on the method for averaging the F4 tally, but the discussion does not indicate any broader consensus on the application or implications of this method.

Contextual Notes

The discussion does not address potential limitations or assumptions related to the specific geometry or the application of the F4 tally in this context.

gvntr52
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How can i use F4 tally in hexagonal lattice geometry which composed of circular fuel assembly? For example one hexagonal lattice includes circle which is cell number 5 and another hexagonal lattice includes circle which is cell number 7 etc. I want to use all these cells in one f4 tally.
Please help
Many thanks...
 
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Do you want a separate tally bin for each cell or an average f4 tally for the same cell over all the lattice locations?
 
I want to average f4 tally for the same cell
 
In that case its as straightforward as:
F4:N (5<L1) (7<L2)
Where L1 and L2 are the lattice numbers where cells 5 and 7 are located.​

If you want an average flux for all cells 5 and 7 all over the geometry it'll be:
F4:N (5 7)​
 
i understand many many thanks...:thumbup::thumbup::thumbup:
 

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