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Re: Strange shape for the cental part of beam pipe. [message #9181 is a reply to message #9176] Tue, 11 August 2009 16:22 Go to previous messageGo to previous message
StefanoSpataro is currently offline  StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino
first-grade participant

From: *56-82-r.retail.telecomitalia.it
If you look in PndPipe, pipeCentral is not used as it is, but after some logical operations:

TGeoCompositeShape *pipeCross = new TGeoCompositeShape("pipeCross", "(PIPE_CN+TRG_CN:r1) - (PIPEV_CN+TRGV_CN:r1)");
TGeoCompositeShape *pipeVacuumCross = new TGeoCompositeShape("pipeVacuumCross", "PIPEV_CN+TRGV_CN:r1");

In practice, totally filled beam+target pipe minus totally filled beam+target vacuum.
There is no overlap, simply logical subtraction of the volumes.
 
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