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Question Particles Dont Recognize Parameterized MLC Geometries  

Forum: Geometry
Date: 15 May, 2018
From: Oguzhan Ayrancioglu <Oguzhan Ayrancioglu>

Hi,

I try to build Medical Linear Accelerator (Linac) geometry and also use phasespace files as a generator on that build. So i created some of parts of the Linac like Jaws, Baseplate under the Jaws, Phantom and MLCs.

I used parameterization algorithm for creating MLCs but there is something wrong about it. What i mean i set the MLCs by using parameterized volumes and place them into seperated containers cause of GEANT4 wanted me to divide parameterized volumes into different logical volumes. GEANT4 warns me that one logical volume (in that case containers) has only the same parameterized volumes' logical volume. So i created 2 of MLCs that have different geometry and then parameterized them into 4 of containers which are "CarriageA +X" , "CarriageA -X", "CarriageB +X", "CarriageB -X"

When i run my simulation scoring deposit doses, particles go through the parameterized-MLCs and nothing happens.. parameterized-MLCs dont block the particles like they are not there.. I see them all in the QT as a solid geometries but they dont interact with the particles. When i get the scoring datas there are just 2 of MLCs that blocks the particles and the others don't. You can see in the figure at attachment. Also i upload my geometry source files so you can find them too.

Thank you for help,

Regards

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2018/05/15/06.39-85827-1
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2018/05/15/06.44-9711-C_HLI_Parameterisation.cc
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2018/05/15/06.44-42191-C_HLT_Parameterisation.cc
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2018/05/15/06.44-72798-SetupGeometry.cc

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1 None: Re: Particles Dont Recognize Parameterized MLC Geometries   (John Apostolakis - 17 May, 2018)
1 None: Re: Particles Dont Recognize Parameterized MLC Geometries   (John Apostolakis - 22 May, 2018)
1 Sad: Particles Dont Recognize Parameterized MLC Geometries   (Oguzhan Ayrancioglu - 06 Jun, 2018)
2 None: Re: Particles Dont Recognize Parameterized MLC Geometries   (Oguzhan Ayrancioglu - 23 May, 2018)
1 None: Re: Particles Dont Recognize Parameterized MLC Geometries   (Oguzhan Ayrancioglu - 23 May, 2018)
2 None: Re: Particles Dont Recognize Parameterized MLC Geometries   (Oguzhan Ayrancioglu - 23 May, 2018)
3 None: Re: Particles Dont Recognize Parameterized MLC Geometries   (Oguzhan Ayrancioglu - 23 May, 2018)
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