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None G4LogicalBorderSurface in Assembly 

Forum: Processes Involving Optical Photons
Date: 28 Aug, 2012
From: Zach Miller <Zach Miller>

Hello,

I'm attempting to simulate a detector made of many layers of scintillator, all of which are in contact with one another. From the scintillator, I have lightguides that should take the opticalPhotons to my PMTs. It's sort of an odd shape, so the lightguides are not trivial, and losing photons is a real issue in the bend. To fight this, I've tried to introduce a teflon wrap.

Since I am eventually going to be placing 20+ of these detectors into the simulation, I built the whole detector as an assembly, to make it easy to place. However, now that I need to add the teflon wrap, I seem to have an issue. If I just use a G4LogicalSkinSurface, it adds a layed of teflon between my scintillator and my lightguide, effectively trapping the light in only the scinitllator. My thought was that I should use a bunch of G4LogicalBorderSurfaces; but I don't know how to do this, since a Placed Physical Volume is required in the call to G4LogicalBorderSurface.

My question, is there any (easy?) way to create LogicalBorderSurface in an assembly, where I haven't actually called a "G4PVPlacement" for a given volume and created a physical volume? I'd like to keep the Assembly in tact, as building 20+ of these just seems like not fun.

Thanks for any time and help, Zach Miller

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1 Feedback: Re: G4LogicalBorderSurface in Assembly   (Gumplinger Peter - 28 Aug, 2012)
(_ None: Re: G4LogicalBorderSurface in Assembly   (Zach Miller - 28 Aug, 2012)
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