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Forum: Geometry
Re: None Combining overlapping parameterisations (Marcus O'Flaherty)
Date: 13 Jan, 2016
From: Gabriele Cosmo <Gabriele Cosmo>

Hi Marcus,

you cannot mix two different parameterisations in the same mother volume.
For your case, you either use normal placements or adopt G4AssemblyVolume,
so to drop each imprint inside the same mother (assuming there're no overlaps).

Hope it helps!

Cheers, Gabriele

On Thu, 31 Dec 2015 15:53:10 GMT, Marcus O'Flaherty wrote:
> What is the proper way to combine two parameterizations that overlap?
> I have two sets of parameterizations, each generating a series of
> layers, which need to be interleaved.
> In order to place a parameterisation it must be in a mother volume,
> which may be physical or logical - either way, it must have a defined
> material.
> As a volume may only contain one parameterization, my two sets of layers
> are placed into two separate mothers, which I have filled with air.
> I have then placed the two mothers such that they overlap, and the
> parameterized daughters interleave.
> However, from what I can tell, it seems that the mother volume placed
> second completely over-rides the first - such that the second mother
> volume's air material over-rides the first mother's parameterized
> material, effectively eliminating the parameterized layers.
> I guess in this implementation there is no clear definition of hierarchy
> to say this isn't what I would like. Is it possible to specify a
> hierarchy? How can I implement this kind of geometry?
> All suggestions much appreciated.

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