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Forum: Event and Track Management
Re: Question Step crosses a geometrical boundary and does not stop (Ioannis Sechopoulos)
Re: Feedback Re: Step crosses a geometrical boundary and does not stop (Gumplinger Peter)
Date: 29 Mar, 2010
From: Ioannis Sechopoulos <Ioannis Sechopoulos>

Thanks for the response. I wasn't sure if to post in Geometry or here, had to choose one... Both physiSkin and physiBreast are G4Ellipsoids to which I've subtracted half of the solid (in the x direction) using G4SubtractionSolid. According to the built-in overlap check in G4PVPlacement, there are no overlaps:

Checking overlaps for volume physiSkin ... OK! Checking overlaps for volume physiBreast ... OK!

Also, physibreast is smaller than physiSkin, it is the only volume in physiSkin, and it is positioned in the center of physiSkin, so I don't believe the geometry has any overlaps or similar problems:

physiBreast = new G4PVPlacement(0,0,
				logicBreast,
				"physiBreast",
				detectorConst->GetlogicSkin(),
				false,
			        0,
				detectorConst->GetOverlapCheck());

Let me know if any more information is needed. Thanks!

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