[Gate-users] step function help

[Alex Vergara Gil]

Dear Yann

So, resuming, you don't have to put anymore the cut values nor the
step function since they already have default values defined by the
physic list builder, is this correct?? This is a very good improvement
indeed.

Regards
Alex

2015-03-24 11:28 GMT-04:00, Yann PERROT <perrot at clermont.in2p3.fr>:
> 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
>> > 痠
>> > 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!
>> >
>
>