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Forum: Geometry
Re: Question Region Problem (Michael Douglass)
Re: More Re: Region Problem (Gabriele Cosmo)
Date: 08 Aug, 2012
From: Michael Douglass <Michael Douglass>

Hi Gabriele,

I am using the physics list provided in the microdosimetry example which assigns physical processes based on region. This physics list appears to be working correctly however when I try to add the logical volume of my parametrerised daughters (see attached image) which are shown in red in the attached image to the region I receive a segmentation fault. A few people have told me that you cannot apply a region to a parametrerised volume. I am trying to assign the livermore physics processes to the blue water medium and the DNA physics list to the red parameterised volumes to speed up my simulations.


On Wed, 08 Aug 2012 08:05:34 GMT, Gabriele Cosmo wrote:

> Hi Michael,
> it is not clear to me what you mean by setting different physics-lists
> by region, as this is not possible. Regions can be assigned production-cuts,
> user-limits, field parameters... but not physics-lists.
> To set a different region for your daughters, you just need to set a new region
> and specify it as root logical volume (as specified in the documentation) once
> for the logical volume of your (parameterised) daughters.
> Cheers, Gabriele
> --------------
> On Wed, 08 Aug 2012 02:20:36 GMT, Michael Douglass wrote:
> > Hello,
> > 
> > I am currently trying to set-up a physics list by region in my G4
> > application. The problem I am having is that when I add a root logical
> > volume to my new region, the daughter volumes are also included in this
> > region. Is it possible to exclude the daughter volumes from the region.
> > 
> > There may be another way to solve my problem. I have many replicated
> > geometries inside a water volume which is itself inside the world
> > volume. I need to apply a specific physics list to the water and another
> > to the replicated geometries. Whenever I try to create a new region with
> > the logical volume of the replicated geometries I get a segmentation
> > fault. Can anyone tell me how I can isolate my replicated geometries in
> > a region of their own while excluding the water inbetween these
> > geometries.
> > 
> > Thank you


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1 More: Re: Region Problem   (Gabriele Cosmo - 13 Aug, 2012)
(_ Question: Re: Region Problem   (Michael Douglass - 19 Aug, 2012)
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