[Gate-users] step function help

[Yann PERROT]

Dear Alex,

Physics list builders allow to call predefined processes, models and
options (such as the step function)via the command:
/gate/physics/addPhysicsList <physics_list_name>

Several physics lists are available depending on your application:
http://wiki.opengatecollaboration.org/index.php/Users_Guide_V7.0:Setting_up_the_physics#New_physics_list_mechanism

Be careful with cut values, it depends on your simulation. You need to
provide your values in your macro.

Regards,

Yann

> Date: Tue, 24 Mar 2015 10:33:08 -0400
> Subject: Re: [Gate-users] step function help
> From: alexvergaragil at gmail.com
> To: perrot at clermont.in2p3.fr
> CC: andreita_5_92 at hotmail.com; gate-users at lists.opengatecollaboration.org
>
> "I remind you that if you have a doubt about the physics to use, physics
> list builders (since GATE v7.0) is a way to be sure of the optimal
> electromagnetic options."
>
> What?? You mean with the use of physics list builder there is no need
> for things like
> /gate/physics/processes/ElectronIonisation/setStepFunction e- 0.1 0.005 mm
> /gate/physics/Electron/SetCutInRegion ...
> and so on???
>
> Please clarify this, since in many examples you can see these things
togheter.
>
> Regards
> Alex
>
> 2015-03-24 9:54 GMT-04:00, Yann PERROT <perrot at clermont.in2p3.fr>:
> > Dear Andrea,
> >
> > "e+ 0.2 .1 mm" means that while the range of the positron is above 100 µm
> > you dont't allow the stopping range to decrease by more than 20% per
step.
> > A description of electromagnetic options is given in the wiki but you can
> > find more details in the Geant4 Physics Reference Manual:
> > http://geant4.cern.ch/support/userdocuments.shtml
> >
> > We usually have same values for electrons and positrons.
> >
> > I remind you that if you have a doubt about the physics to use, physics
> > list builders (since GATE v7.0) is a way to be sure of the optimal
> > electromagnetic options.
> >
> > Bests,
> >
> > Yann
> >
> >
> > From: andreita_5_92 at hotmail.com
> > To: gate-users at lists.opengatecollaboration.org
> > Date: Tue, 24 Mar 2015 12:43:02 +0000
> > Subject: [Gate-users] step function help
> >
> > hello!
> > I'm trying to use the step function for electroionisation proces and for
> > positrons, but I don't understand how it works...
> > Example:
> > /gate/physics/processes/ElectronIonisation/setStepFunction e+ 0.2 .1 mm
> > Can somebody please help me?
> > And for positrons, wich is the correct range?
> > Thank you!
> >