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None Question about the linearity parameter in LYSO crystal 

Forum: Processes Involving Optical Photons
Date: 24 Nov, 2011
From: Davinder Siwal <Davinder Siwal>

Dear geant4 users

I am trying to simulate the LYSO scintillator for position resolution calculation The simulation is going well but I am not able to reproduce the experimental results. I am trying to see the centroid of position of interaction at different position of the source placed normally to the LYSO crystal. Now as I move away from the centre of the crystal I should see the non-linear behaviour in the simulated position measurement but in the simulation I am observing a linear behaviour which is not true. The non-linear behaviour comes due to the contribution of the reflected photons from the surface of the scintillator.

Does anybody has any idea what kind of extra parameter do I need to include in the simulation to meet the experimental results.

In the following attachment the experimental non-linear behaviour is shown in Fig 8. have a look .....

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2011/11/24/05.59-87367-lyso_linarity.pdf

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1 Feedback: Re: Question about the linearity parameter in LYSO crystal   (Gumplinger Peter - 24 Nov, 2011)
1 None: Re: Question about the linearity parameter in LYSO crystal   (Davinder Siwal - 24 Nov, 2011)
2 None: Re: Question about the linearity parameter in LYSO crystal   (Benton Pahlka - 25 Nov, 2011)
1 None: Re: Question about the linearity parameter in LYSO crystal   (Davinder Siwal - 25 Nov, 2011)
3 None: Re: Question about the linearity parameter in LYSO crystal   (Benton Pahlka - 25 Nov, 2011)
1 None: Re: Question about the linearity parameter in LYSO crystal   (Davinder Siwal - 28 Nov, 2011)
(_ None: Re: Question about the linearity parameter in LYSO crystal   (Benton Pahlka - 28 Nov, 2011)
(_ None: Re: Question about the linearity parameter in LYSO crystal   (Davinder Siwal - 05 Dec, 2011)
(_ None: Re: Question about the linearity parameter in LYSO crystal   (Benton Pahlka - 05 Dec, 2011)
(_ None: Re: Question about the linearity parameter in LYSO crystal   (Davinder Siwal - 05 Dec, 2011)
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