diff --git a/NPSimulation/include/ThinSiScorers.hh b/NPSimulation/include/ThinSiScorers.hh
index fb2b72c5dbae243eb2392e3bfcec7b7191ce69f1..33563f2026d9173af4bb56181f35e615eef79ed8 100644
--- a/NPSimulation/include/ThinSiScorers.hh
+++ b/NPSimulation/include/ThinSiScorers.hh
@@ -28,6 +28,9 @@
 #include "G4THitsMap.hh"
 
 namespace THINSI {
+   //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
+   //   This Threshold is used in the above scorer. Any energy deposit under this threshold will not create an entry.
+   const double TriggerThreshold = 0.1*keV ;
    
    class PSStripNumber : public G4VPrimitiveScorer
    {
diff --git a/NPSimulation/src/ThinSiScorers.cc b/NPSimulation/src/ThinSiScorers.cc
index ec0371438c1848e43ed74a3ca29eb0fc18ce9556..eef8dfd3b3d4fe5f39e92ac1606c7c4aa4be2c26 100644
--- a/NPSimulation/src/ThinSiScorers.cc
+++ b/NPSimulation/src/ThinSiScorers.cc
@@ -57,7 +57,7 @@ G4bool PSStripNumber::ProcessHits(G4Step* aStep, G4TouchableHistory*)
    //Rare case where particle is close to edge of silicon plan
    if (X == m_NumberOfStrip+1) X = m_NumberOfStrip;
    G4double edep = aStep->GetTotalEnergyDeposit();
-   if (edep < 100*keV) return FALSE;
+   if (edep < TriggerThreshold) return FALSE;
    G4int  index =  aStep->GetTrack()->GetTrackID();
    G4int S = X ;
    EvtMap->set(index+DetNbr, S);