[Gate-users] Parallel Hole Collimator
Jon Moody
jbmoody at umich.edu
Tue Mar 12 19:23:12 CET 2013
Hi Carlos,
I think "parallelbeam" collimator construction has not been working
right since Gate v.5.0.0, so the other option is to use cubicArray and
linear repeaters as Giuseppe mentioned. In this case, the septal
thickness is defined implicitly in the two repeatVectors. For hexagonal
shaped holes the second and third components of the cubicArray
repeatVector are:
Ry = hole_diameter + septal_thickness
Rz = Ry * sqrt(3)
where hole_diameter is defined across the flat sides. The corresponding
two components of the linear repeatVector are:
Ly = Ry / 2
Lz = Rz / 2
(the x-components of both repeatVectors are 0). Then the cubicArray
repeatNumberY/Z determine the number of holes in each direction divided
by 2.
--
Jon
On 3/12/2013 1:16 PM, Carlos Uribe wrote:
> Hi Giuseppe,
>
> Thanks for your reply...I tried it but it still doesn't solve the problem.
>
> I know that I can use your specified macro to create a collimator step
> by step. However, I do want to use the option given in the guide
> using the
>
> /gate/SPECThead/daughters/insert parallelbeam
>
> This has a parameter that specifies the septal thickness
>
> /gate/colli/geometry/setSeptalThickness 0.2 cm
>
> I guess I will be able to track the septal penetration using
>
> /gate/output/analysis/recordSeptalPenetration true
> /gate/output/analysis/setSeptalVolumeName collimator
>
> I've tried this using the macro that you suggested and it doesn't
> work. I assume that you need to set the septal thickness shown in the
> guide's example. If there's another way that someone knows to make it
> work please let me know.
>
> Thanks,
>
> Carlos
>
>
>
> On Tue, Mar 12, 2013 at 5:26 AM, Giuseppe Magro <beppe.magro at gmail.com
> <mailto:beppe.magro at gmail.com>> wrote:
>
>
> /gate/colli/setMaterial Lead
>
> (instead of setMaterialName)
>
> Example (shielding as mother volume):
>
> #=====================================
> # Collimator
> #=====================================
>
> /gate/shielding/daughters/name collimator
> /gate/shielding/daughters/insert box
> /gate/collimator/geometry/setXLength 3. cm
> /gate/collimator/geometry/setYLength 19. cm
> /gate/collimator/geometry/setZLength 28. cm
> /gate/collimator/placement/setTranslation -2. 0. 0. cm
> /gate/collimator/setMaterial Lead
> /gate/collimator/vis/setColor red
> /gate/collimator/vis/forceWireframe
> /gate/collimator/describe
>
> /gate/collimator/daughters/name hole
> /gate/collimator/daughters/insert hexagone
> /gate/hole/geometry/setHeight 3. cm
> /gate/hole/geometry/setRadius .15 cm
> /gate/hole/placement/setRotationAxis 0 1 0
> /gate/hole/placement/setRotationAngle 90 deg
> /gate/hole/placement/setTranslation 0. -0.25 -0.25 cm #
> /gate/hole/setMaterial Air
> /gate/hole/describe
>
> /gate/hole/repeaters/insert cubicArray
> /gate/hole/cubicArray/setRepeatNumberX 1
> /gate/hole/cubicArray/setRepeatNumberY 18 #9
> /gate/hole/cubicArray/setRepeatNumberZ 27 #9
> /gate/hole/cubicArray/setRepeatVector 0. 1. 1. cm
> /gate/hole/cubicArray/autoCenter true #false
>
> /gate/hole/repeaters/insert linear
> /gate/hole/linear/setRepeatNumber 2
> /gate/hole/linear/setRepeatVector 0. 0.5 0.5 cm
> /gate/hole/linear/autoCenter false
>
>
> Regards,
>
> Giuseppe M.
> PhD Student - CNAO
>
> On 12 March 2013 12:00,
> <gate-users-request at lists.opengatecollaboration.org
> <mailto:gate-users-request at lists.opengatecollaboration.org>> wrote:
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> Today's Topics:
>
> 1. Parallel hole Collimator (Carlos Uribe)
> 2. Re: ASCII output (Carlos Uribe)
> 3. Re: Process for Photon Evaporation (Hermann Fuchs)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 11 Mar 2013 11:31:41 -0700
> From: Carlos Uribe <carluri at phas.ubc.ca
> <mailto:carluri at phas.ubc.ca>>
> To: "gate-users at lists.opengatecollaboration.org
> <mailto:gate-users at lists.opengatecollaboration.org>"
> <gate-users at lists.opengatecollaboration.org
> <mailto:gate-users at lists.opengatecollaboration.org>>
> Subject: [Gate-users] Parallel hole Collimator
> Message-ID:
>
> <CAPJy_1TcFTKwiEpu_Zicc=+UKYN3hfHMjvhumfzWL6AxyZ+1Sg at mail.gmail.com
> <mailto:UKYN3hfHMjvhumfzWL6AxyZ%2B1Sg at mail.gmail.com>>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hello everyone,
>
> I'm following the user's guide
> http://wiki.opengatecollaboration.org/index.php/Users_Guide_V6.2:Defining_a_system
> trying to model a parallel hole collimator.
>
> The guide shows the following example:
>
> /gate/SPECThead/daughters/name colli
>
> #specify that the parallel beam collimator setup must be used
> /gate/SPECThead/daughters/insert parallelbeam
>
> #set the collimator material
> /gate/colli/setMaterialName Lead
>
> #set the collimator dimensions
> /gate/colli/geometry/setDimensionX 70 cm
> /gate/colli/geometry/setDimensionY 80 cm
>
> #set the thickness of the collimator
> /gate/colli/geometry/setHeight 3 cm
>
> #specify the hole radius
> /gate/colli/geometry/setInnerRadius 0.5 cm
>
> #set the septal thickness to the required distance between the
> holes
> /gate/colli/geometry/setSeptalThickness 0.2 cm
> /gate/colli/placement/alignToX
> /gate/colli/placement/setRotationAxis 0 0 1
> /gate/colli/placement/setRotationAngle -90 deg
>
>
> I'm getting a problem as follows:
>
> /opt/simulation/gate_v6.2/source/geometry/src/GateVVolume.cc
> (l.179): The
> material of the volume side hole 1 is not defined.
>
> Anyone knows how to fix this?
>
> Thanks,
>
> --
> Carlos F Uribe
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> ------------------------------
>
> Message: 2
> Date: Mon, 11 Mar 2013 12:40:11 -0700
> From: Carlos Uribe <carluri at phas.ubc.ca
> <mailto:carluri at phas.ubc.ca>>
> To: samira nezhad <sn90113 at gmail.com <mailto:sn90113 at gmail.com>>
> Cc: "gate-users at lists.opengatecollaboration.org
> <mailto:gate-users at lists.opengatecollaboration.org>"
> <gate-users at lists.opengatecollaboration.org
> <mailto:gate-users at lists.opengatecollaboration.org>>
> Subject: Re: [Gate-users] ASCII output
> Message-ID:
>
> <CAPJy_1QZT9uYF1VmobA3Mk2xMfS_2MRTmQfv41x=2nVvdJ2ssg at mail.gmail.com
> <mailto:2nVvdJ2ssg at mail.gmail.com>>
> Content-Type: text/plain; charset="iso-8859-1"
>
> I had the same problem and here is how I fixed it
>
> In the GateConfiguration.h.in <http://GateConfiguration.h.in>
> <http://gateconfiguration.h.in/> file found
> within the home folder of Gate, change this line:
>
>
> #cmakedefine GATE_USE_FILE @GATE_USE_FILE@
>
>
> to this:
>
> #cmakedefine GATE_ANALYSIS_USE_FILE
> @GATE_ANALYSIS_USE_FILE@
>
>
> Recompile Gate and it should now work!
>
> Cheers,
>
> Carlos
>
>
> On Sun, Mar 10, 2013 at 3:10 AM, samira nezhad
> <sn90113 at gmail.com <mailto:sn90113 at gmail.com>> wrote:
>
> > Dear all,
> >
> > I need to ASCII output but by gate6.2 i couldn't get it .
> > when use this command
> > /gate/output/ascii/enable
> >
> > It gives this error message:
> >
> > COMMAND NOT FOUND
> >
> > I appreciate if you guide me, thanks in advance
> >
> > Best regards,
> >
> >
> >
> > _______________________________________________
> > Gate-users mailing list
> > Gate-users at lists.opengatecollaboration.org
> <mailto:Gate-users at lists.opengatecollaboration.org>
> >
> http://lists.opengatecollaboration.org/mailman/listinfo/gate-users
> >
> > --
> > Carlos F Uribe
> >
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> ------------------------------
>
> Message: 3
> Date: Tue, 12 Mar 2013 10:11:10 +0100
> From: Hermann Fuchs <hermann.fuchs at meduniwien.ac.at
> <mailto:hermann.fuchs at meduniwien.ac.at>>
> To: Carlos Uribe <carluri at phas.ubc.ca
> <mailto:carluri at phas.ubc.ca>>
> Cc: "gate-users at lists.opengatecollaboration.org
> <mailto:gate-users at lists.opengatecollaboration.org>"
> <gate-users at lists.opengatecollaboration.org
> <mailto:gate-users at lists.opengatecollaboration.org>>
> Subject: Re: [Gate-users] Process for Photon Evaporation
> Message-ID:
>
> <1363079470.5371.3.camel at strahlen41.strahlen.meduniwien.ac.at
> <mailto:1363079470.5371.3.camel at strahlen41.strahlen.meduniwien.ac.at>>
> Content-Type: text/plain; charset="utf-8"
>
> That is an interesting question.
>
> Could you keep me informed on your findings?
> If it isn't already in Gate it should be easy to add.
> Just contact me and I can help you with this or implement it
> for you.
>
> Best reards,
> Hermann
>
> On Fri, 2013-03-08 at 12:22 -0800, Carlos Uribe wrote:
> > Hello everybody,
> >
> >
> >
> > Can anyone please tell me which process to add to my Physics
> list in
> > order to see the de-exitation of the metastable daughter?
> >
> >
> > The parent follows a beta-minus decay which works great
> except I don't
> > see the gammas generated by the metastable daughter.
> >
> >
> > I am using
> > /gate/physics/addProcess RadioactiveDecay
> >
> >
> > but apparently, Geant4 handles the meta-stable states
> through the
> > existing photo-evaporation code;
> >
> >
> >
> > How do I set the photon evaporation process?
> >
> >
> > Thanks in advance,
> > --
> >
> >
> > Carlos F Uribe
> >
> > _______________________________________________
> > Gate-users mailing list
> > Gate-users at lists.opengatecollaboration.org
> <mailto:Gate-users at lists.opengatecollaboration.org>
> >
> http://lists.opengatecollaboration.org/mailman/listinfo/gate-users
>
>
> --
> -------------
> DI Hermann Fuchs
> Christian Doppler Laboratory for Medical Radiation Research
> for Radiation Oncology
> Department of Radiation Oncology
> Medical University Vienna
> W?hringer G?rtel 18-20
> A-1090 Wien
>
> Tel. + 43 / 1 / 40 400 7271
> <tel:%2B%2043%20%2F%201%20%2F%2040%20400%207271>
> Mail. hermann.fuchs at meduniwien.ac.at
> <mailto:hermann.fuchs at meduniwien.ac.at>
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> End of Gate-users Digest, Vol 82, Issue 20
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> --
> Carlos F Uribe
>
>
>
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