diff --git a/DDG4/plugins/Geant4TVUserParticleHandler.cpp b/DDG4/plugins/Geant4TVUserParticleHandler.cpp
index daf8c3402..f7a9ac099 100644
--- a/DDG4/plugins/Geant4TVUserParticleHandler.cpp
+++ b/DDG4/plugins/Geant4TVUserParticleHandler.cpp
@@ -14,19 +14,20 @@
 /** \addtogroup Geant4Action
  *
  @{
-   \package Geant4TCUserParticleHandler
+   \package Geant4TVUserParticleHandler
  * \brief Rejects to keep particles, which are created outside a tracking cylinder.
  *
  *
 @}
  */
 
-#ifndef DD4HEP_DDG4_GEANT4TCUSERPARTICLEHANDLER_H
-#define DD4HEP_DDG4_GEANT4TCUSERPARTICLEHANDLER_H
+#ifndef DD4HEP_DDG4_GEANT4TVUSERPARTICLEHANDLER_H
+#define DD4HEP_DDG4_GEANT4TVUSERPARTICLEHANDLER_H
 
 // Framework include files
 #include <DD4hep/Primitives.h>
 #include <DDG4/Geant4UserParticleHandler.h>
+#include <DD4hep/Volumes.h>
 
 /// Namespace for the AIDA detector description toolkit
 namespace dd4hep {
@@ -35,21 +36,22 @@ namespace dd4hep {
   namespace sim {
 
     ///  Rejects to keep particles, which are created outside a tracking cylinder.
-    /** Geant4TCUserParticleHandler
+    /** Geant4TVUserParticleHandler
      *
      *  TC stands for TrackingCylinder ;-)
      *
      * @author  M.Frank
      * @version 1.0
      */
-    class Geant4TCUserParticleHandler : public Geant4UserParticleHandler  {
-      double m_zTrackerMin, m_zTrackerMax, m_rTracker;
+    class Geant4TVUserParticleHandler : public Geant4UserParticleHandler  {
+      Volume m_trackingVolume;
+
     public:
       /// Standard constructor
-      Geant4TCUserParticleHandler(Geant4Context* context, const std::string& nam);
+      Geant4TVUserParticleHandler(Geant4Context* context, const std::string& nam);
 
       /// Default destructor
-      virtual ~Geant4TCUserParticleHandler() {}
+      virtual ~Geant4TVUserParticleHandler() {}
 
       /// Post-track action callback
       /** Allow the user to force the particle handling in the post track action
@@ -69,7 +71,7 @@ namespace dd4hep {
   }    // End namespace sim
 }      // End namespace dd4hep
 
-#endif // DD4HEP_DDG4_GEANT4TCUSERPARTICLEHANDLER_H
+#endif // DD4HEP_DDG4_GEANT4TVUSERPARTICLEHANDLER_H
 
 //====================================================================
 //  AIDA Detector description implementation
@@ -79,32 +81,26 @@ namespace dd4hep {
 //
 //====================================================================
 // Framework include files
-//#include <DDG4/Geant4TCUserParticleHandler.h>
+//#include <DDG4/Geant4TVUserParticleHandler.h>
 #include <DDG4/Geant4Particle.h>
 #include <DDG4/Factories.h>
 
 
 using namespace dd4hep::sim;
-DECLARE_GEANT4ACTION(Geant4TCUserParticleHandler)
+DECLARE_GEANT4ACTION(Geant4TVUserParticleHandler)
 
 /// Standard constructor
-Geant4TCUserParticleHandler::Geant4TCUserParticleHandler(Geant4Context* ctxt, const std::string& nam)
+Geant4TVUserParticleHandler::Geant4TVUserParticleHandler(Geant4Context* ctxt, const std::string& nam)
 : Geant4UserParticleHandler(ctxt,nam)
 {
-  declareProperty("TrackingVolume_Zmin",m_zTrackerMin=-1e100);
-  declareProperty("TrackingVolume_Zmax",m_zTrackerMax=1e100);
-  declareProperty("TrackingVolume_Rmax",m_rTracker=1e100);
+  declareProperty("TrackingVolume",m_trackingVolume=Volume());
 }
 
 /// Post-track action callback
-void Geant4TCUserParticleHandler::end(const G4Track* /* track */, Particle& p)  {
+void Geant4TVUserParticleHandler::end(const G4Track* /* track */, Particle& p)  {
 
-  double r_prod = std::sqrt(p.vsx*p.vsx + p.vsy*p.vsy);
-  double z_prod = p.vsz;
-  bool starts_in_trk_vol = ( r_prod <= m_rTracker
-    && z_prod >= (m_zTrackerMin == -1e100? -m_zTrackerMax : m_zTrackerMin)
-    && z_prod <= m_zTrackerMax
-  )  ;
+  std::array<double, 3> start_point = {p.vsx, p.vsy, p.vsz};
+  bool starts_in_trk_vol = m_trackingVolume.ptr()->Contains(start_point.data());
 
   dd4hep::detail::ReferenceBitMask<int> reason(p.reason);
 
@@ -116,12 +112,8 @@ void Geant4TCUserParticleHandler::end(const G4Track* /* track */, Particle& p)
     return;
   }
 
-  double r_end  = std::sqrt(p.vex*p.vex + p.vey*p.vey);
-  double z_end  = p.vez;
-  bool ends_in_trk_vol =  ( r_end <= m_rTracker
-     && z_end >= (m_zTrackerMin == -1e100? -m_zTrackerMax : m_zTrackerMin)
-     && z_end <= m_zTrackerMax
-  ) ;
+  std::array<double, 3> end_point = {p.vex, p.vey, p.vez};
+  bool ends_in_trk_vol = m_trackingVolume.ptr()->Contains(end_point.data());
 
   // created and ended in calo but not primary particle
   //
@@ -161,7 +153,7 @@ void Geant4TCUserParticleHandler::end(const G4Track* /* track */, Particle& p)
 }
 
 /// Post-event action callback
-void Geant4TCUserParticleHandler::end(const G4Event* /* event */)   {
+void Geant4TVUserParticleHandler::end(const G4Event* /* event */)   {
 
 }
 
diff --git a/DDG4/python/DDSim/Helper/ParticleHandler.py b/DDG4/python/DDSim/Helper/ParticleHandler.py
index 147211dab..a2c901aa2 100644
--- a/DDG4/python/DDSim/Helper/ParticleHandler.py
+++ b/DDG4/python/DDSim/Helper/ParticleHandler.py
@@ -122,7 +122,7 @@ def setupUserParticleHandler(self, part, kernel, DDG4):
     if not self.userParticleHandler:
       return
 
-    if self.userParticleHandler not in ["Geant4TCUserParticleHandler"]:
+    if self.userParticleHandler not in ["Geant4TCUserParticleHandler", "Geant4TVUserParticleHandler"]:
       logger.error("unknown UserParticleHandler: %r" % self.userParticleHandler)
       exit(1)
 
@@ -153,4 +153,15 @@ def setupUserParticleHandler(self, part, kernel, DDG4):
 
       part.adopt(user)
 
+    elif self.userParticleHandler == "Geant4TVUserParticleHandler":
+      user = DDG4.Action(kernel, "%s/UserParticleHandler" % self.userParticleHandler)
+      try:
+        user.TrackingVolume = DDG4.Kernel().detectorDescription().trackingVolume()
+      # TODO: better error message, suggestions welcome ;)
+      except:
+        logger.error("tracking_volume missing in detector model.")
+        exit(1)
+
+      part.adopt(user)
+
     return