TRACK Pruning Commands
Track pruning selects the path(s) in a history that lead from the source to
desired cell(s) and/or surface(s).
A history may consist of a number of particles, not all of which are of interest.
The tracks must be held in Sabrina's memory to enable pruning.
TRACK PRune Branches N
-
Select the first
N branches that
satisfy the pruning criteria or all such branches if
N < 0.
TRACK PRune Cell C1 [C2 [C3 ...]]
-
Select histories that enter a cell in the list and discard all branches in
the selected histories that are not in the path from the source to the cell.
Paths that were discarded by a previous pruning operation and satisfy the
current selection are not selected
(use
PRUNE RESET
to enable selection).
TRACK PRune Header
-
If the MCNP PTRAC input specified cell and/or surface filters,
those cell(s) and surface(s) are listed in the file header data.
PRUNE HEADER
searches for that data and prunes the tracks to those cells
and/or surfaces. A warning is given and no pruning is done if
the data does not exist.
TRACK PRune Reset
-
Discard all pruning selections and mark all track data as acceptable
for display and writing (subject to filtering).
TRACK PRune Surface S1 [S2 [S3 ...]]
-
Select histories that cross a surface in the list and discard all branches in
the selected histories that are not in the path from the source to the surface.
Paths that were discarded by a previous pruning operation and satisfy the
current selection are not selected
(use
PRUNE RESET
to enable selection).
TRACK PRune Terminate {ON | OFf}
-
Terminate the path at the pruning cell or surface
(
ON) or continue the track to its
termination (OFF).