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Question Question about the photocathode simulation and how to Detect the photon? 

Forum: Processes Involving Optical Photons
Date: 02 Apr, 2012
From: Xiaodong Zhang <Xiaodong Zhang>

Dear Peter and other masters,

I have a question concerning the photocathode simulation. Here my codes are give below:

  ........
  G4MaterialPropertiesTable* PMT_SD = new G4MaterialPropertiesTable();
  PMT_SD->AddProperty("REALRINDEX", PhotonEnergy_Bialkali, realRefractiveIndex_Bialkali, nEntries_Bialkali);
  PMT_SD->AddProperty("IMAGINARYRINDEX", PhotonEnergy_Bialkali, imaginaryRefractiveIndex_Bialkali, nEntries_Bialkali);
  PMT_SD->AddProperty("EFFICIENCY", PhotonEnergy_Bialkali, quantumEfficiency_Bialkali, nEntries_Bialkali);

  // define the optical surface for the bialkali photocathode of PMT
  G4OpticalSurface* bialkaliSurface = new G4OpticalSurface("bialkaliSurface");
  bialkaliSurface->SetType(dielectric_metal);
  bialkaliSurface->SetFinish(polished);
  bialkaliSurface->SetModel(glisur);
  bialkaliSurface->SetMaterialPropertiesTable(PMT_SD);

........

For the readout part, I following the instruction of this: http://hypernews.slac.stanford.edu:5090/HyperNews/geant4/get/opticalphotons/11/1.html and the example code: http://www-geant4.kek.jp/lxr/source/examples/extended/optical/LXe/src/LXeSteppingAction.cc

But I can not get the "Detection" results, when I call the G4OpBoundaryProcess::GetStatus() function.

I go further to check the source code of G4OpBoundaryProcess class, I can not find any code to give the "Detection" value to the status variable.

So, now I feel confuse about the function about Detection simulation.

In addition, when I changed the Efficiency vector, the program doesn't show any change.

Could you please help me to figure out my problem?

Thanks, Xiaodong

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1 More: Re: Question about the photocathode simulation and how to Detect the photon?   (Xiaodong Zhang - 02 Apr, 2012)
(_ Warning: Re: Question about the photocathode simulation and how to Detect the photon?   (Gumplinger Peter - 02 Apr, 2012)
(_ None: Re: Question about the photocathode simulation and how to Detect the photon?   (Xiaodong Zhang - 02 Apr, 2012)
1 None: Re: Question about the photocathode simulation and how to Detect the photon?   (Xiaodong Zhang - 03 Apr, 2012)
1 Feedback: Re: Question about the photocathode simulation and how to Detect the photon?   (Gumplinger Peter - 03 Apr, 2012)
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2 Feedback: Re: Question about the photocathode simulation and how to Detect the photon?   (Gumplinger Peter - 03 Apr, 2012)
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