Fix for gun generator

diff --git a/ZDC/AliZDCDigitizer.cxx b/ZDC/AliZDCDigitizer.cxx
index d12ff81783e92c69f998a91558346d1a1735b818..b05e321b8004c590eee26f9278114fe83abe1e86 100644 (file)
--- a/ZDC/AliZDCDigitizer.cxx
+++ b/ZDC/AliZDCDigitizer.cxx
@@ -179,8 +179,13 @@ Bool_t AliZDCDigitizer::Init()
   }    
   printf("\t  AliZDCDigitizer ->  beam type %s  - beam energy = %f GeV\n", fBeamType.Data(), fBeamEnergy);
   
-  ReadPMTGains();
-
+  if(fBeamEnergy>0.1){
+    ReadPMTGains();
+  }
+  else{
+    AliWarning("\n Beam energy is 0 -> ZDC PMT gains can't be set -> NO ZDC DIGITS!!!\n");
+  }
+  
   // ADC Caen V965
   fADCRes[0] = 0.0000008; // ADC Resolution high gain: 200 fC/adcCh
   fADCRes[1] = 0.0000064; // ADC Resolution low gain:  25  fC/adcCh