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Question Re: /gps/pos/confine causes error 

Forum: Particles
Re: None /gps/pos/confine causes error (Jeremy McCormick)
Re: None Re: /gps/pos/confine causes error (Jeremy McCormick)
Date: 14 Mar, 2010
From: Suhaili Zakaria <Suhaili Zakaria>

On Fri, 28 Jan 2005 20:19:24 GMT, Jeremy McCormick wrote:
> This error occurs seemingly regardless of the source type I specify, 
> i.e. even if my detector wholly contains a sphere of 1.0 mm radius at
> (0, 0, 0), as in the following.
> /gps/pos/confine pv_det_envelope_0
> /gps/pos/type Volume
> /gps/pos/shape Sphere
> /gps/pos/inner_radius 0
> /gps/pos/radius 1 mm
> /gps/pos/centre 0 0 0
> /gps/ene/mono 10 GeV
> /gps/ang/type iso
> /gps/particle mu-
> I still get the same error message (see parent post).
> Apparently, the GPS thinks that the generated points
> are outside the specified volume when, in fact, they
> are not.
> Simple gps macros such as mono energy with a fixed
> position and momentum work fine.


This is an old problem, but I just came across it. I tried to defined my source as volume with inner radius but problem occurs. I believe the problem is due to the fact that inner_radius is only set for plane annulus source.

Can I know how you solve the issue? I might get some ideas on how to solve mine.

Many thanks


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