[Gate-users] Re: Gate-users Digest, Vol 5, Issue 9

[steven staelens]

> 
> More accurate way to look for particles crossing a boundary is to find
> that
> step associated with prepoint in pre-volume and postpoint in post-
> volume.
> 

we have implemented a way to do this for pinhole penetration exactly as
Yu says. We presented this work at the OpenGATE meeting in Delft. Also,
cfr. the proceedings of the ITBS05 conference.

As discussed at the last OpenGATE SC in Marseille, this development will
be in one of the next 2 releases. We are cleaning up the code at this
stage since some things are still hardcoded.

best regards,

S.

> Does GATE hit class have those volume names written out?
> 
> Please correct me if I am wrong and misleading. 
> 
> Yu Chen, Ph.D.
> University of Massachusetts Medical School
> Division of Nuclear Medicine
> 55 Lake Avenue North
> Worcester, MA 01655-0243
> Phone:  (508) 856-6123
> Fax:    (508) 856-4572
> 
> 
> 
> -----Original Message-----
> From: gate-users-bounces at lists.healthgrid.org on behalf of D.J. van
> der Laan
> Sent: Fri 10/13/2006 9:15 AM
> To: gate-users at lists.healthgrid.org
> Subject: Re: [Gate-users] Re: Gate-users Digest, Vol 5, Issue 9
> 
> You could probably use the hits output of Gate for this. One of the
> columns in this output is the process, and one of the possible
> processes
> is 'Transportation', which indicates a particle leaving the sensitive
> detector. (I think it is leaving, but you'll have to check to be
> sure.)
> 
> I hope this solves your problem.
> 
> Jan
> 
> 
> PS Below you can find two bash scripts that run a Gate simulation and
> extract the annihilation coordinates from the hits output, without
> creating a huge hits file.  Perhaps they are usefull.
> 
> ======= run.sh ===========
> #!/bin/bash
> rm -f gateHits.dat
> mkfifo gateHits.dat
> ./process.sh gateHits.dat > annihilations.dat &
> Gate beamgeometry.mac > screenout
> rm gateHits.dat
> 
> ======= process.sh ===========
> #!/bin/bash
> cat $1 | grep 'annihil' | gawk '{print $14, $15, $16}'
> 
> 
> Ben S McDonald wrote:
> > Howdy Gaters,
> >
> > Does anyone know if it is possible to set a flag for a boundary
> crossing
> > in Gate (e.g. did particles pass through volume without
> interacting)?
> > I'm trying to quantify pinhole penetration other than by just
> > ray-tracing between the sourcePos and globalPos stored variables.
> >
> > Thanks for any help,
> >
> > Ben McDonald
> > _______________________________________________
> > Gate-users mailing list
> > Gate-users at lists.healthgrid.org
> > http://lists.healthgrid.org/mailman/listinfo/gate-users
> 
> --
> D.J. van der Laan
> Delft University of Technology
> Mekelweg 15, room 2.00.020
> 2629 JB Delft
> The Netherlands
> 
> E: d.j.vanderlaan at tnw.tudelft.nl
> T: +31 15 2783776
> F: +31 15 2789011
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> 
> 
> 
> 
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-- 

Steven Staelens, Ph.D.
Ghent University
ELIS Department
Proeftuinstraat 86
B-9000 Gent
tel.  +32 9 264 66 28
fax. +32 9 264 66 18
Steven.Staelens at ugent.be