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Question A scintillator sensitive to both neurons and gammas 

Forum: Processes Involving Optical Photons
Date: 22 Apr, 2009
From: Clarisse <Clarisse>

Hi,

I am trying to simulate a scintillator sensitive to both gammas and thermal neutrons.

1). I succesfully simulated NaI with scintillation (not sensitive to neutrons). I wrote a custom made Physics List that includes low energy EM interactions for e+, e-, and gammas, as well as all the optical physics for scintillation photons. To get this to run I have 2 lines in my main program: myDet.cc: #include "myDetPhysicsList.hh", and runManager->SetUserInitialization(new myDetPhysicsList);

2). I have another program which simulates the interactions of thermal neutrons in He3 gas (does NOT scintillate): For this I remove the files src/myDetPhysicsList.cc and src/myDetPhysiscsList.hh, and instead use a physics list provided by GEANT4: QGSP_BIC_HP. So, I replace the 2 lines above in myDet.cc by: #include "QGSP_BIC_HP.hh", and runManager->SetUserInitializetion(new QGSP_BIC_HP);

3). Now, I want to write a 3rd simulation program where I have a scintillator on which I can throw either a gamma or a thermal neutron. The problem is: the best hadron physics list for thermal neutrons is QGSP_BIC_HP, which DOES NOT have scintillation. My custom made Physics List has scintillation BUT does NOT have hadron interactions.

I tried to write my own custom made hadron physics with no success (I could never get the neutrons to react). So , I REALLY want to use QGSP_BIC_HP. BUT, I also want scintillation and optical photon physics.

MY QUESTION: How can I have both? I.e. how can I use QGSP_BIC_HP physics list AND add the physics for optical photons?

Clarisse

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1 None: A scintillator sensitive to both neutrons and gammas   (Paul Nicholas Colin Gloster - 22 Apr, 2009)
(_ Question: Re: A scintillator sensitive to both neutrons and gammas   (Clarisse - 22 Apr, 2009)
1 None: Re: A scintillator sensitive to both neutrons and gammas   (Paul Nicholas Colin Gloster - 22 Apr, 2009)
2 Feedback: Re: A scintillator sensitive to both neutrons and gammas   (Gumplinger Peter - 06 May, 2009)
3 Question: Re: A scintillator sensitive to both neutrons and gammas   (Steve Heaton - 29 Nov, 2011)
1 Feedback: Re: A scintillator sensitive to both neutrons and gammas   (Gumplinger Peter - 29 Nov, 2011)
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