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Question Paving a disc with boxes 

Keywords: Invidual Positionning vs Replica
Forum: Geometry
Date: 27 Jan, 2006
From: Campagne J.E <>

Dear developpers I use G4.8.0. I would like to pave a Disk, representing a EndCap of Cylindrical Water Cerenkov detector, with boxes, representing a volume that may contains a PMT + BlackSheetCover. My question is: if I do by hand the boxes position, taking care that they are not placed outside the disk, then the Geometry optimization phase take a very long time as I have 20,000 such boxe. In comparison, in the Barrel region I use replica in Phi and it takes nothing to do that for 60,000 units or so. Can you help me to speed up this process? Best regards Jean-Eric

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