[Gate-users] ion source

[anayisse arnaud]

Hi Marcin,

Thank you very much for your email,

- I would like to ask you please if we can use the ion particle to simulate a positron source ?
- How can we simulate the decay, do you have please an example for that ?

- At benchmarkPET , they use particle e+ source ,  the only examples of ion source I have are in the benchmark "example_PHAMTOM_SOURCE " (see below please):
- Why the ionic charge and the excitation energy are 0  in those examples ?  why the mono-energy is 0 ?  how can we choose these parameters ?


# For F18
/gate/source/addSource fluor18
/gate/source/fluor18/setActivity 5. becquerel
/gate/source/fluor18/gps/particle ion
/gate/source/fluor18/gps/ion 9 18 0 0 
/gate/source/fluor18/gps/energytype Mono
/gate/source/fluor18/gps/monoenergy 0. MeV
/gate/source/fluor18/gps/angtype iso
/gate/source/fluor18/gps/number 1


# For O15
/gate/source/addSource oxy15
/gate/source/oxy15/setActivity 100000 Bq
/gate/source/oxy15/gps/particle ion
/gate/source/oxy15/gps/ion 8 15 0 0 
/gate/source/oxy15/gps/energytype Mono
/gate/source/oxy15/gps/monoenergy 0. MeV
/gate/source/oxy15/gps/angtype iso
/gate/source/oxy15/gps/number 1




Many thanks

Anayisse







----------------------------------------
> Date: Tue, 19 Feb 2008 12:24:26 +0100
> From: m.balcerzyk at pluri.ucm.es
> Subject: RE: energytype source
> To: anayisse_arnaud at hotmail.com
> CC: gate-users at lists.healthgrid.org
> 
> Dear Anayisse.
> 
> You have the typical ones listed in section 7.2.2 of users guide. Besides
> the ones you mentioned there are FastI124 and Backtoback. Otherwise you have
> to use isotopes/ions:
> 
> /gate/source/NAME/gps/particle ion
> /gate/source/NAME/gps/ion 8 15 1 2
> 
> Which is oxygen 15, of charge +1 and energy 2 MeV. You need a module
> G4EMLOW3.0 for Gate 3.0.0 and Geant4, ver 8... which is normally not needed
> by Gate (I think) for Fluor18 source. Look at Geant web pages where to
> install it. I have it at /geant48/data folder as a subfolder. Contrary to
> Fluor18 source, you have decay times listed in definition of ion source.
> 
> Users guide warns that the simulation is slower with the general ion source,
> but I used one with pretty complicated decay and it worked fine. In case of
> ion sources with many branches specify well the /gate/physics part - look at
> benchmarkPET, at macro physics.mac.
> 
> Marcin Balcerzyk
> Univesrsitad Complutense de Madrid
> 
> -----------------------------
> 
> Message: 5
> Date: Mon, 18 Feb 2008 20:40:57 +0000
> From: anayisse arnaud 
> Subject: [Gate-users] energytype source
> To: 
> Message-ID: 
> Content-Type: text/plain; charset="iso-8859-7"
> 
> 
> Hi Gate Users,
> 
> I need your help please
> 
> I would like to know if GATE offers keywords to simulate other positron
> sources ? or it is limited to Fluor18, Oxygen15 and Carbon11  ? 
> 
> 
> Thank you
> 
> Anayisse
> 

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