[Gate-users] Problems with X-ray peak

[Leda Lorenzon]

Dear all,
I’m trying to simulate Infinia Hawkeye SPECT system with LEHR collimator
but I can't obtain, in the simulated spectra, the X-ray peak of lead that I
observe experimentally.
Here is associated script that I used for the physics processes.

/gate/physics/addProcess PhotoElectric
/gate/physics/processes/PhotoElectric/setModel LivermoreModel
/gate/physics/addProcess Compton
/gate/physics/processes/Compton/setModel PenelopeModel
/gate/physics/addProcess RayleighScattering
/gate/physics/processes/RayleighScattering/setModel PenelopeModel
/gate/physics/addProcess ElectronIonisation
/gate/physics/processes/ElectronIonisation/setModel StandardModel e-

/gate/physics/addProcess Bremsstrahlung
/gate/physics/processes/Bremsstrahlung/setModel StandardModel e-

/gate/physics/addProcess eMultipleScattering
/gate/physics/processes/eMultipleScattering/setModel Urban95Model e-

/gate/physics/processList Enabled
/gate/physics/processList Initialized

/gate/physics/Electron/SetCutInRegion   SPECThead 0.001 cm
/gate/physics/Electron/SetCutInRegion   SecondHead 0.001 cm
/gate/physics/Gamma/SetCutInRegion   SPECThead 0.001 cm
/gate/physics/Gamma/SetCutInRegion   SecondHead 0.001 cm


Is there any problem with my script?

Please help me.

Really thank you.
Leda
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