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Question G4Trap, parameters 

Keywords: G3 Trap, G4Trap parameters, Face at ~-X not planar.
Forum: Geometry
Date: 15 Sep, 2006
From: <>

Dear All,

I'm trying to re-implement a volumes in GEANT4. This volume have 
been implemented in GEANT3 using the following parameters:

4.5 cm        //DZ
4.014 deg,   //THET 
270.0 deg,   //PHI				
3.066 cm,   //H1
4.357*cm,    // BL1	
0. *cm,    // TL1
0.0*deg,   //Alp1
1.757*cm,   // H2
2.498*cm,  //BL2 
0.*cm,    // TL2
0.0*deg    //Alp2

According to the documentation of GEANT3 and GEANT4 
(if i'm not making a mistake) I can use this parameters directly 
(except the zero's) in G4Trap to produce the same shape.
But using this parameters, geant produces an exception with the 
following body.

*** G4Exception : InvalidSetup
      issued by : G4Trap::MakePlanes()
Face at ~-X not planar.

Does anybody have any idea how to solve this problem?.

Thanx in advance,

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1 None: Re: G4Trap, parameters   (Vladimir Grichine - 18 Sep, 2006)
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