From b7050516793fe744bfd52906ce24f514e8a8d71d Mon Sep 17 00:00:00 2001
From: Shaojun Lu <shaojun.lu@desy.de>
Date: Fri, 24 Mar 2017 18:01:28 +0100
Subject: [PATCH] Set verbose true for G4EmSaturation to printout Birks
 coefficient.

---
 DDG4/src/Geant4StepHandler.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/DDG4/src/Geant4StepHandler.cpp b/DDG4/src/Geant4StepHandler.cpp
index bae7724ce..141a20e6c 100644
--- a/DDG4/src/Geant4StepHandler.cpp
+++ b/DDG4/src/Geant4StepHandler.cpp
@@ -114,9 +114,10 @@ G4ThreeVector Geant4StepHandler::globalToLocalG4(const G4ThreeVector& global)  c
 /// Apply BirksLaw
 double Geant4StepHandler::birkAttenuation() const    {
 #if G4VERSION_NUMBER >= 1001
-  static G4EmSaturation s_emSaturation(0);
+  static G4EmSaturation s_emSaturation(1);
 #else
   static G4EmSaturation s_emSaturation();
+  s_emSaturation.SetVerbose(1);
 #endif
 
   double energyDeposition = step->GetTotalEnergyDeposit();
-- 
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