[Gate-users] Problems with X-ray peak

[Francois Smekens]

Hi Leda,

Yann and David are right. If you want to model atom deexcitation process,
you will have to use the Gate v7.0.
With this version, there is two possibilities:

1. use the physic list builders (atom deexcitation is automatically
activated)
2. use your own physic list and add the following command in your macro
file:

/gate/physics/addAtomDeexcitation

Bests,
François


2014-08-28 9:42 GMT+02:00 David Sarrut <David.Sarrut at creatis.insa-lyon.fr>:

> Hello,
>
> what Gate version ? If >=7.0, please use the physic list builder
> <http://wiki.opengatecollaboration.org/index.php/Users_Guide_V7.0:Setting_up_the_physics#New_physics_list_mechanism> and
> check with G4 documentation what kind of physics you need.
>
> Sincerely,
> David
>
>
> On Wed, Aug 27, 2014 at 3:17 PM, Leda Lorenzon <lorenzon.leda88 at gmail.com>
> wrote:
>
>>
>> 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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>> Gate-users at lists.opengatecollaboration.org
>> http://lists.opengatecollaboration.org/mailman/listinfo/gate-users
>>
>
>
>
> --
> David Sarrut, Phd
> Directeur de recherche CNRS
> CREATIS, UMR CNRS 5220, Inserm U 1044
> Centre de lutte contre le cancer Léon Bérard
> 28 rue Laënnec, 69373 Lyon cedex 08
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> http://www.creatis.insa-lyon.fr/~dsarrut
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