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rcolrcol defines a rectangular collimator (the aperture is a rectangle, the
external profile in the transverse plane is a square).
The longitudinal collimator structure is not taken into account. To do this the
user has to describe the collimator with the generic type element.
Attributes:
l - length [m] (default 0)
xsize - horizontal aperture [m] (default set to boxSize)
ysize - vertical aperture [m] (default set to boxSize)
outR - external extent [m] in x and y of the collimator (default set to boxSize)
material - collimator material (default set to “Graphite”)
Example :
col1 : rcol,l=0.4*m, xsize=2*mm, ysize=1*mm, material="G4_W"