[Gate-users] step function help

[Alex Vergara Gil]

"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!
>
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