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Hello,
I've got problems with my sensitive detectors.
I adopted the Hadrontherapy example as model for the read-out geometry
and sensitive detector of a slab of silicon (300 um thickness). Only xz
pixelation has been implemented in my case.
62 MeV protons are delivered to the sensitive detector and a step
limiter of 50 um is adopted within the sensitive detector (i.e., at
least 6 steps are registered per particle).
The traking verbosity confirms the number of steps and shows an energy
loss at each step, however it appears that the sensitive detector only
records the first interaction. The function ProcessHits() is invoked
only for the first interaction of the primary particle, and the number
of Hits per event is always only 1.
I have already followed the suggestions in post number 68 but it doesn't
seem to be my case because I don't have volume overlapping.
Do you have any suggestion?
Thank you,
Maria Antonietta Piliero
*********************************************************************************************************
* G4Track Information: Particle = proton, Track ID = 1, Parent ID = 0
*********************************************************************************************************
Step# X Y Z KineE dEStep StepLeng TrakLeng Volume Process
0 -2.5 cm 0 fm 0 fm 62 MeV 0 eV 0 fm 0 fm WorldPhys initStep
1 0 fm 0 fm 0 fm 62 MeV3.97e-18 eV 2.5 cm 2.5 cm WorldPhys Transportation
2 50 um -104 nm -87.2 nm 61.9 MeV 88 keV 50 um 2.5 cm MedipixPhys StepLimiter
ProcessHits invoked
3 100 um -121 nm -103 nm 61.8 MeV 66.7 keV 50 um 2.51 cm MedipixPhys StepLimiter
4 150 um 69.4 nm -145 nm 61.8 MeV 76.9 keV 50 um 2.52 cm MedipixPhys StepLimiter
5 151 um 70.6 nm -147 nm 61.8 MeV 1.44 keV 1.16 um 2.52 cm MedipixPhys hIoni
6 201 um 90.3 nm -229 nm 61.7 MeV 78.6 keV 50 um 2.52 cm MedipixPhys StepLimiter
7 251 um 28.2 nm -194 nm 61.6 MeV 71.4 keV 50 um 2.53 cm MedipixPhys StepLimiter
8 267 um -21.2 nm -217 nm 61.6 MeV 39.3 keV 16.2 um 2.53 cm MedipixPhys hIoni
9 300 um -119 nm -294 nm 61.5 MeV 48 keV 32.6 um 2.53 cm MedipixPhys Transportation
10 2.5 cm -94.6 um -47 um 61.5 MeV3.95e-18 eV 2.47 cm 5 cm OutOfWorld Transportation
*********************************************************************************************************
* G4Track Information: Particle = e-, Track ID = 2, Parent ID = 1
*********************************************************************************************************
Step# X Y Z KineE dEStep StepLeng TrakLeng Volume Process
0 151 um 70.6 nm -147 nm 13.9 keV 0 eV 0 fm 0 fm MedipixPhys initStep
1 151 um -313 nm 513 nm 0 eV 13.9 keV 2.66 um 2.66 um MedipixPhys eIoni
---> End of event: 0
Absorber: total energy: 0 eV total track length: 0 fm
Gap: total energy: 484.22691 keV total track length: 302.66586 um
numberOfHits 1
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Problems with sensitive detector 
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