diff --git a/CODE/physics.hh b/CODE/physics.hh
new file mode 100644
index 0000000000000000000000000000000000000000..d721c067f4ef0ec9a41b6ee4819aab0acaec5b08
--- /dev/null
+++ b/CODE/physics.hh
@@ -0,0 +1,18 @@
+#ifndef PHYSICS_HH
+#define PHYSICS_HH
+
+#include "G4VModularPhysicsList.hh"
+#include "G4EmStandardPhysics.hh"
+#include "G4OpticalPhysics.hh"
+#include "G4RadioactiveDecayPhysics.hh"
+#include "G4DecayPhysics.hh"
+
+class MyPhysicsList : public G4VModularPhysicsList
+{
+public:
+    MyPhysicsList();
+    ~MyPhysicsList();
+};
+
+#endif
+