Reduced SD thicknesses to avoid counting bounces off light guide walls adjacent to the SD

src/DetectorConstruction.cc

@@ -72,7 +72,7 @@ DetectorConstruction::DetectorConstruction()
     m_pmtPos( new G4ThreeVector(28.5*mm, 35.0*mm, -7.5*mm) ),
     m_rotation( new G4RotationMatrix() ),
     m_pmtDia(10.5*mm),
-    m_PMTthickness(0.25*mm),
+    m_PMTthickness(0.001*mm),
     m_ConstructionHasBeenDone(false),
     m_UsingCADmodel(true),
     m_logicWorld(0),
@@ -269,7 +269,7 @@ void DetectorConstruction::BuildDefaultLG( ){
  * Make the PMT logical volume and Sensitvie Detector
  */
 void DetectorConstruction::BuildPMT(){
-  
+
   G4SDManager* SDman = G4SDManager::GetSDMpointer();
   m_SDnames.push_back("MyPMT");
   PMTSD* PMT = new PMTSD(m_SDnames.back(), false); // isIntermediate set to false. This is the final detector
@@ -300,7 +300,7 @@ void DetectorConstruction::BuildPMT(){
       m_SDnames.push_back("IntSD1");
       PMT = new PMTSD(m_SDnames.back(), true); // isIntermediate set to true
       SDman->AddNewDetector( PMT );
-      m_solidIntSD.push_back( new G4Box("soldIntSD1",20.00*mm, 0.1*mm, 2.00*mm) );
+      m_solidIntSD.push_back( new G4Box("soldIntSD1",20.00*mm, 0.001*mm, 2.00*mm) );
       m_logicIntSD.push_back( new G4LogicalVolume(m_solidIntSD.back(), materials->Air, "logicIntSD1") );
       m_logicIntSD.back()->SetVisAttributes(VisAtt_PMT);
       m_logicIntSD.back()->SetSensitiveDetector( PMT );
@@ -311,7 +311,7 @@ void DetectorConstruction::BuildPMT(){
       m_SDnames.push_back("IntSD2");
       PMT = new PMTSD(m_SDnames.back(), true); // isIntermediate set to true
       SDman->AddNewDetector( PMT );
-      m_solidIntSD.push_back( new G4Box("soldIntSD2",50.00*mm, 0.1*mm, 1.00*mm) );
+      m_solidIntSD.push_back( new G4Box("soldIntSD2",50.00*mm, 0.001*mm, 1.00*mm) );
       m_logicIntSD.push_back( new G4LogicalVolume(m_solidIntSD.back(), materials->Air, "logicIntSD2") );
       m_logicIntSD.back()->SetVisAttributes(VisAtt_PMT);
       m_logicIntSD.back()->SetSensitiveDetector( PMT );