fix syntax

Author: GiorgioAlbertoLucia

Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Digitizer.h

@@ -116,6 +116,7 @@ class Digitizer : public TObject
     return mExtraLabelBuffer[index].get();
   }
 
+  static constexpr float ps2ns = 1e-3f; ///< picoseconds to nanoseconds conversion
   static constexpr float sec2ns = 1e9f; ///< seconds to nanoseconds conversion
   static constexpr float cm2um = 1e4f;  ///< centimeters to micrometers conversion
 

Detectors/Upgrades/ALICE3/IOTOF/simulation/src/Digitizer.cxx

@@ -353,7 +353,7 @@ double Digitizer::smearTime(double time, const float x, const float y) const
   float timeOfArrivalOffset = 0.;
   if (mTimeOfArrivalMap) {
     int bin = mTimeOfArrivalMap->FindBin(x * o2::iotof::Digitizer::cm2um, y * o2::iotof::Digitizer::cm2um);
-    timeOfArrivalOffset = mTimeOfArrivalMap->GetBinContent(bin) / o2::iotof::Digitizer::ns2ps; // convert to ns
+    timeOfArrivalOffset = mTimeOfArrivalMap->GetBinContent(bin) * o2::iotof::Digitizer::ps2ns; // convert to ns
     LOG(debug) << "Time of arrival map check: x=" << x * o2::iotof::Digitizer::cm2um << ", y=" << y * o2::iotof::Digitizer::cm2um << ", bin=" << bin << ", time offset=" << timeOfArrivalOffset;
   }