diff --git a/NPSimulation/Detectors/Miniball/Miniball.cc b/NPSimulation/Detectors/Miniball/Miniball.cc
index b5b19e2c2e6b4039d52f79078035ee81e0835541..567a6ccede104ffb4f6a043318bb46fdaffe1d90 100644
--- a/NPSimulation/Detectors/Miniball/Miniball.cc
+++ b/NPSimulation/Detectors/Miniball/Miniball.cc
@@ -271,7 +271,6 @@ void Miniball::ConstructDetector(G4LogicalVolume* world){
 
     G4RotationMatrix* Rot = new G4RotationMatrix(u,v,w);
     G4Transform3D Trans(*Rot,Det_pos);
-    Det_pos=G4ThreeVector(0,0,0);
     m_ClusterDetector->MakeImprint(world,Det_pos, Rot,i+1);
      // set a nicer name
     std::vector< G4VPhysicalVolume * >::iterator it = m_ClusterDetector->GetVolumesIterator();
diff --git a/NPSimulation/Detectors/TRex/TRex.cc b/NPSimulation/Detectors/TRex/TRex.cc
index e536c2eb99cb90cb4a568b3a1ea86c028eb959d4..d6f4f125c3992e6befabe42918d4b0dfe43abf80 100644
--- a/NPSimulation/Detectors/TRex/TRex.cc
+++ b/NPSimulation/Detectors/TRex/TRex.cc
@@ -300,7 +300,7 @@ void TRex::ConstructDetector(G4LogicalVolume* world){
     G4VisAttributes* ChamberVisAtt
       = new G4VisAttributes(G4Colour(0.0,0.4,0.5,0.2));
     m_Chamber->SetVisAttributes(ChamberVisAtt);
-    new G4PVPlacement(new G4RotationMatrix(),G4ThreeVector(0,0,0),m_Chamber,"TRex_Chamber",world,false,0);
+    new G4PVPlacement(new G4RotationMatrix(),G4ThreeVector(0,0,50),m_Chamber,"TRex_Chamber",world,false,0);
   }
 }
 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
diff --git a/Projects/TRex_Miniball/TRex_Miniball.detector b/Projects/TRex_Miniball/TRex_Miniball.detector
index 06f82a43b91a07728344b2133b2e66d080fa473c..210bb5c22c38f25706688592b59a375800706db3 100644
--- a/Projects/TRex_Miniball/TRex_Miniball.detector
+++ b/Projects/TRex_Miniball/TRex_Miniball.detector
@@ -86,13 +86,13 @@ Sharc
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 Miniball
 	R= 110
-	THETA= 125
+	THETA= 110
 	PHI= 320
 	Shape= Square
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 Miniball
 	R= 110
-	THETA= 125 
+	THETA= 110 
 	PHI= 220
 	Shape= Square
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -122,7 +122,7 @@ Miniball
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 Miniball
 	R= 110
-	THETA= 125 
+	THETA= 110 
 	PHI= 40
 	Shape= Square
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%