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weight_windows.rst

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Weight Window Format

The current revision of the weight window file format is 1.0.

/

Attributes:
  • filetype (char[]) -- String indicating the type of file.
  • version (int[2]) -- Major and minor version of the weight window file format.

/weight_windows/

Attributes:
  • n_weight_windows (int) -- Number of weight window objects in the file.
  • ids (int[]) -- Unique IDs of weight window objects in the file.

/weight_windows/weight_windows_<uid>/

Datasets:
  • mesh (int) -- ID of the mesh associated with the weight window object.
  • particle_type (char[]) -- Particle type to which the weight windows apply.
  • energy_bounds (double[]) -- Energy bounds of the weight windows in [eV]
  • lower_ww_bounds (double[]) -- Weight window lower bounds.
  • upper_ww_bounds (double[]) -- Weight window upper bounds.
  • survival_ratio (double) -- Weight window survival ratio.
  • max_lower_bound_ratio (double) -- Maximum particle weight to lower weight window bound ratio.
  • max_split (int) -- Maximum number of splits per weight window check.
  • weight_cutoff (double) -- Particle weight cutoff.

/meshes/

Attributes:
  • n_meshes (int) -- Number of meshes in the file.
  • ids (int[]) -- User-defined unique ID of each mesh.

/meshes/mesh <uid>/

Please see the section on /tallies/meshes/ in the :doc:`statepoint`.