diff --git a/NPSimulation/Core/MaterialManager.cc b/NPSimulation/Core/MaterialManager.cc
index a4fe23398b58f30ab715e8982271a936e3c46d79..e66bc6168a3e9aa0269523fcf3bf3732af3b4bd2 100644
--- a/NPSimulation/Core/MaterialManager.cc
+++ b/NPSimulation/Core/MaterialManager.cc
@@ -135,6 +135,19 @@ G4Material* MaterialManager::GetMaterialFromLibrary(string Name,
       return material;
     }
 
+    else if (Name == "Rogers4003C") {
+      if (!density)
+        density            = 1.79 * g / cm3;
+      G4Material* material = new G4Material("NPS_" + Name, density, 4);
+      material->AddElement(GetElementFromLibrary("H"), 2);
+      material->AddElement(GetElementFromLibrary("C"), 50);
+      material->AddElement(GetElementFromLibrary("O"), 38);
+      material->AddElement(GetElementFromLibrary("Si"), 10);
+      m_Material[Name] = material;
+      return material;
+    }
+
+ 
     else if (Name == "Mylar") {
       if (!density)
         density            = 1.397 * g / cm3;
diff --git a/NPSimulation/Detectors/ChiNu/ChiNu.cc b/NPSimulation/Detectors/ChiNu/ChiNu.cc
index 7d747ef2a82a010a5e40e0a58c9323db06d22523..1f948124ecc42431b681979acc051ec1cba2b5fe 100644
--- a/NPSimulation/Detectors/ChiNu/ChiNu.cc
+++ b/NPSimulation/Detectors/ChiNu/ChiNu.cc
@@ -444,10 +444,10 @@ void ChiNu::ConstructDetector(G4LogicalVolume* world){
     BuildDetector()->MakeImprint(world,Det_pos,Rot,i);
   }
 
-  /*G4RotationMatrix* Rot_FC = new G4RotationMatrix(0,0,0);
+  G4RotationMatrix* Rot_FC = new G4RotationMatrix(0,0,0);
   G4ThreeVector Pos_FC = G4ThreeVector(0,0,0) ;
   BuildFissionChamber()->MakeImprint(world,Pos_FC,Rot_FC,0);
-*/
+
 
 }
 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......