[Gate-users] Error message during simulation.

[Edoardo Pasca]

On Fri, 2009-01-30 at 15:11 +0100, Simon Stute wrote:
> Hi Edoardo,
> 
> The translation applied on your rsector in point 2) (either following
> the X or Y axis) will affect the way to describe your array repeaters
> in point 5) (this which repeats your first created crystal). So if you
> really just changed point 2), the problem could be easily explained.
> Have you watched your scanner with OpenGl or something to see if you
> obtained what you expected ?
> 

Indeed, I did not mention in the email the details about the repeater
that I changed accordingly to the change of shift. In any case during
construction I use the viewer to check what I do! ;)

To resume, the rsector+crystal+layer looked exactly the same in the two
differently shifted configuration. Something goes wrong somewhere else. 

> However for your negative radius, I have no idea !

This is mysterious.

Thanks

Edoardo 

> 
> Cheers,
> Simon
> 
> On Fri, Jan 30, 2009 at 2:52 PM, Edoardo Pasca <e.pasca at nki.nl> wrote:
>         On Thu, 2009-01-29 at 15:40 +0100, Edoardo Pasca wrote:
>         > Hi all,
>         >
>         > I am running a slightly modified version of the
>         full_simulation example,
>         > and I get a whole bunch of this messages:
>         >
>         > C is too big to make the ID : C = 61 Max < 29
>         
>         
>         Even though I didn't exactly figured out what this message
>         means, I
>         figured out what it is about: 29 is the number of crystal
>         along the Z
>         direction of the detector. Now, that message is saying
>         something like
>         "the event happened outside the crystal".
>         
>         Anyhow, I checked how I designed the detector of type
>         cylindricalPET:
>         1) create rsector
>         2) move it to 0 N 0 mm
>         3) create crystals
>         4) create layer
>         5) apply the repeater
>         6) attach the pieces
>         
>         This is different, on the point 2, from what always described
>         on the
>         manual: during design, on the manual, the shift goes on the X
>         direction,
>         rather than on the Y.
>         As a matter of facts I also noticed that the output
>         of  /gate/systems/cylindricalPET/describe gave me a negative
>         radius of
>         the scanner, which was highly suspicious.
>         
>         I just changed point 2 and shifted the rsector to N 0 0 mm and
>         now the
>         simulation goes fine.
>         
>         I guess that this is somehow a bug, because there shouldn't be
>         dependence on that kind of shift.
>         
>         My best
>         
>         Edoardo
>         
>         >
>         > I checked the original example does not show that message.
>         What did I do
>         > wrong? What is C?
>         >
>         > Thanks for any help
>         >
>         > Edoardo
>         
>         
>         
>         _______________________________________________
>         Gate-users mailing list
>         Gate-users at lists.healthgrid.org
>         http://lists.healthgrid.org/mailman/listinfo/gate-users
>         
>