Message: Re: Problem with G4PVReplica Not Logged In (login)

## Re: Problem with G4PVReplica

Forum: Geometry
Re: Problem with G4PVReplica (Chaw)
Date: 31 Oct, 2010
From: michel maire <michel maire>

 On Thu, 28 Oct 2010 17:38:30 GMT, Gasser wrote: ```> > > G4double expHall_x = 3*m; G4double expHall_y = 1.*m; G4double expHall_z > = 1.*m; > > //pixel size G4double x_x=6.66*mm; G4double y_y=6.66*mm; ``` ```> > pixels_phys= new > G4PVReplica("pixels_phys",inter_log,experimentalHall_log,kXAxis,6,x_x,0) ``` ` In User's Guide, chapter Geometry-Replicas (4.1.4.2), it is said :` ``` G4PVReplica represents nReplicas volumes differing only in their positioning,and completely filling the containing mother volume. Consequently if a G4PVReplica is 'positioned' inside a given mother it MUST be the mother's only daughter volume. Replica's correspond to divisions or slices that completely fill the mother volume and have no offsets.``` ``` You replicate 6*x_x = 6*6.66 mm in a world of 3 m ... Futhermore, it is recommended not to do replication directly in world. Define an containing volume with fit exactly your replication.``` ```> > Another question, i would like to add another axis but i don't know... ``` ``` In code in attachement, nx cells are replicated in a row ny rows are replicated in a layer nz layers are replicated in a module one module is placed in world``` ` I hope it can help, Michel` ``` Attachment: http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2010/10/31/16.08-79989-DetectorConstruction.txt ```

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