I recently use Geant4 to do some simulation about Cherenkov radiation.And I set PMT to detect the photon.In the tracking information,I found out that every step’s processsName of opticalPhoton is transportation.But they all killed by absorption or detection(so in the last step,it shouldn’t be transportation).I want to know how the opticalphoton dead.
How can I solve this problem?
The output information are as follow:
- G4Track Information: Particle = opticalphoton, Track ID = 288, Parent ID = 2
Step# X(mm) Y(mm) Z(mm) KinE(MeV) dE(MeV) StepLeng TrackLeng NextVolume ProcName
0 831 -0.241 -8.78e+03 1.07e-05 0 0 0 InnerWater initStep
1 1.13e+03 -1.55e+03 -9.95e+03 1.07e-05 0 1.96e+03 1.96e+03 bottom_reflector2 Transportation
2 1.13e+03 -1.55e+03 -9.95e+03 1.07e-05 0 0 1.96e+03 InnerWater Transportation
3 1.18e+03 -1.7e+03 -9.91e+03 1.07e-05 0 160 2.12e+03 reflector2 Transportation
4 1.18e+03 -1.7e+03 -9.91e+03 1.07e-05 0 0 2.12e+03 InnerWater Transportation
5 1.36e+03 -1.41e+03 -9.95e+03 1.07e-05 0 346 2.47e+03 bottom_reflector2 Transportation
6 1.36e+03 -1.41e+03 -9.95e+03 1.07e-05 0 0 2.47e+03 InnerWater Transportation
7 1.21e+03 -1.68e+03 -9.34e+03 1.07e-05 0 687 3.16e+03 reflector2 Transportation
8 1.21e+03 -1.68e+03 -9.34e+03 1.07e-05 0 0 3.16e+03 InnerWater Transportation
9 1.21e+03 -1.6e+03 -9.42e+03 1.07e-05 0 114 3.27e+03 pmt Transportation
10 1.21e+03 -1.6e+03 -9.42e+03 1.07e-05 0 0.000154 3.27e+03 pmtbase Transportation
11 1.21e+03 -1.6e+03 -9.42e+03 1.07e-05 0 0 3.27e+03 pmt Transportation
12 1.21e+03 -1.6e+03 -9.42e+03 1.07e-05 0 0.000154 3.27e+03 InnerWater Transportation
13 1.28e+03 -1.62e+03 -9.51e+03 1.07e-05 0 111 3.38e+03 reflector2 Transportation
14 1.28e+03 -1.62e+03 -9.51e+03 1.07e-05 0 0 3.38e+03 InnerWater Transportation
15 -235 138 -9.95e+03 1.07e-05 0 2.36e+03 5.75e+03 bottom_reflector2 Transportation
16 -235 138 -9.95e+03 1.07e-05 0 0 5.75e+03 InnerWater Transportation
17 1.93e+03 738 -8.62e+03 1.07e-05 0 2.61e+03 8.36e+03 reflector2 Transportation
18 1.93e+03 738 -8.62e+03 1.07e-05 0 0 8.36e+03 InnerWater Transportation
19 1.59e+03 1.18e+03 -9.95e+03 1.07e-05 0 1.44e+03 9.8e+03 bottom_reflector2 Transportation
20 1.59e+03 1.18e+03 -9.95e+03 1.07e-05 0 0 9.8e+03 InnerWater Transportation
21 1.16e+03 1.71e+03 -9.82e+03 1.07e-05 0 692 1.05e+04 reflector2 Transportation
22 1.16e+03 1.71e+03 -9.82e+03 1.07e-05 0 0 1.05e+04 InnerWater Transportation
23 1.14e+03 1.66e+03 -9.95e+03 1.07e-05 0 141 1.06e+04 bottom_reflector2 Transportation