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Forum: Documentation and Examples
Re: Idea New user, need some tips. (Alex)
Date: 01 Mar, 2007
From: Vladimir IVANTCHENKO <vnivanch@mail.cern.ch>

On Thu, 1 Mar 2007, Alex wrote:

> *** Discussion title: Documentation and Examples
> Email replies to PublicHyperNews@slac.stanford.edu must include:
>   In-Reply-To: <"/docsexamples/341"@geant4-hn.slac.stanford.edu>
>   Subject: ...change this to be about your reply.
> 
> Hello,
> 
> I am a first year student, and I need geant4 for a simulation.
> 
> I started reading the application developer guide, but I would be
> grateful if you could guide me with some problems I encountered in my
> setup.
> 
> I need to create a box with a magnetic field inside to deviate some
> random particles generated with a particle gun. The particles will be
> deviated under a certain angle. At a given location I must insert a
> detector (Si detector) that should count the number of particles that
> hit that certain detector. This is the first part of the simulation
> (just to get the hang of it, and then create the complex setup I need).
> 
> So I started to modify the ExeampleN01. I know have a PB box and a
> particle gun that shots a proton. I also added physics processes after
> looking over ExampleN02.
> 
> So, what do I need to study next in order to create a detector that will
> count the particles that went throught it? I need to also see some
> information about the particles (kinetic energy for example). And I
> still could not figure it out how to shoot for example 1000 particles
> under different angle from the same particle gun. I modified
> nb_particles and it shoots 1000 particles, but how can I generate a
> random angle for each one?
> 
> Sorry if this sounds simple to you, but for a beginner this small things
> makes you loose a lot of time, sometimes not knowing where to start
> from.
> 
> Thank you for you time.
> 

Please, look into other examples as well. Both N01 and N02 are not 
supposed to be a starting point for user application. There are other 
novice and extended examples, also advanced.

VI

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