Surface physics MC are initiated with the OPTION::seed

src/Classic/Solvers/CollimatorPhysics.cpp

@@ -54,6 +54,7 @@ CollimatorPhysics::CollimatorPhysics(const std::string &name, ElementBase *eleme
 
     gsl_rng_env_setup();
     rGen_m = gsl_rng_alloc(gsl_rng_default);
+    gsl_rng_set(rGen_m, Options::seed);
 
     Material();
 
@@ -1192,4 +1193,4 @@ void CollimatorPhysics::deleteParticleFromLocalVectorDKS() {
 
 }
 
-#endif
\ No newline at end of file
+#endif