[Gate-users] NCAT Source-phantom

[Cláudia Régio Brambilla]

Hello,

 

I was using gate4 when I did that script with parametrizedBoxMatrix. When
gate was released for gate5 I just take the same script change the commands
for regular Matrix and ran. The problem starts to appeared after that. In
gate4 I’ve never seen this error message with my simulation. We are trying
to run in another computer to check if there is a problem with our
installation. Our G4 version is 4.9.2.p01 with gate5. I think the last one
was G4.9.2 and gate 4, I’m not have sure I can check and reply for you
again.

 

Regards

 

Cláudia

 

From: Simon Stute [mailto:gate.stute at gmail.com] 
Sent: sexta-feira, 22 de janeiro de 2010 09:49
To: Cláudia Régio Brambilla
Cc: Ida Häggström; gate-users at lists.opengatecollaboration.org
Subject: Re: [Gate-users] NCAT Source-phantom

 

Hi,

I did not understand that this is a systematic error ! in this case it is
not a rounding error, something goes wrong in your simulation definition I
think.
But it is strange that your macro ran fine in Gate4 and not anymore in
Gate5...

2 questions:

 - If you really change nothing in your macro (I mean really nothing) and
you launch it using Gate4, does it work ?
 - which G4 versions are you currently using with Gate4 and Gate5, the same
or different ? and which ?

Cheers,
Simon

On Thu, Jan 21, 2010 at 8:49 PM, Cláudia Régio Brambilla
<claudinha.rb at gmail.com> wrote:

Hello,

 

Thanks for clarify my question, I didn’t know about this problem in G4. I’m
using a random seed (auto) and all runs have been  with the same problem.
What Do you suggest for this problem? Is Just to run many times after bug
until work? Or Is the best way to change the regular matrix for compress or
another compatible command?

 

Thanks all  for all suggestions

 

Best regards

 

Cláudia

 

From: Simon Stute [mailto:gate.stute at gmail.com] 
Sent: quinta-feira, 21 de janeiro de 2010 12:31
To: Ida Häggström
Cc: Cláudia Régio Brambilla; gate-users at lists.opengatecollaboration.org
Subject: Re: [Gate-users] NCAT Source-phantom

 

Hi all,

This bug comes from the G4PhantomParameterization class of G4 that is used
when using the G4RegularNavigator (it is the case only when you use the
regularMatrix object in GATE, it is not possible for other types of
volumes).
And unfortunatly it is probably a rounding bug when some particle are
generated or interact exactly on the phantom border within the distance
tolerance of G4.
This bug has been already tracked but no satisfying solution was found !
And there is nothing related to the version of Gate in this problem.

Just launch again your simulation with another random seed...

Cheers,
Simon

2010/1/21 Ida Häggström <ida.haggstrom at radfys.umu.se>

Dear Cláudia,

I've seen that error message myself and have not figured out exactly why it
appears. I got it when I used a voxelized phantom based on
"parameterizedBoxMatrix" in Gate 5 (never used Gate 4). When I switched to
"compressedMatrix" instead, everything else exactly the same, the error
disappeared. You can give it a go! =) You can also try "regularMatrix".

/Ida


2010/1/20 Cláudia Régio Brambilla <claudinha.rb at gmail.com>

> Hello Gate Users,
>
>
>
> I was running a simulation with NCAT phantom and this error starts to
> appear
> using GATE 5. I usually used the same code in GATE 4 that any errors
> appeared before.
>
> Does anybody know about the error bellow?
>
>
>
>
>
> ERROR - G4PhantomParameterisation::GetReplicaNo()
>
>        localPoint - (-1.743113937,-1.77535309,-1.503948302) - is outside
> container solid: NCAT_S
>
>
>
> *** G4Exception : InvalidSetup
>
>      issued by : G4PhantomParameterisation::GetReplicaNo()
>
> Point outside voxels!
>
> *** Fatal Error In Argument *** core dump ***
>
>
>
> *** G4Exception: Aborting execution ***
>
> Aborted
>
>
>
>
>
> __________________________________
>
>
>
> Cláudia Régio Brambilla
>
>
>
> Física Médica
>
> Supervisora de Radioproteção - CNEN FM-0089
>
>
>
> Mestranda em Clínica Médica - FAMED/PUCRS
>
> Grupo de Pesquisa em Imagens Médicas - NIMed - PUCRS
>
> TECNOPUC 96A
>
>
>
> Contato:
>
>
>
> +55 51 84251368
>
> +55 51 3320 3682 ramal 7813
>
>
>
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