[Gate-users] MU and bad_alloc

[Loic Grevillot]

Dear Catarina,

I think you should move to Gate V6.1, with Geant4.9.4, because many bugs
should be corrected.
For pencil beams (of protons, but also with any particle you like), 2 new
sources have been added:
- "GateSourcePencilBeam" to define a single pencil beam
- "GateSourceTPSPencilBeam" to define a pencil beam treatment plan
Details are available in the documentation, in the bottom of this page:
http://wiki.opengatecollaboration.org/index.php/Users_Guide_V6.1:Source
You should try also examples "Novice_4" and "Novice_5" from
"examples/example_Radiotherapy" directory.
MU are converted into proton number based on proton stopping power in air
(see "GateSourceTPSPencilBeam.cc") .

Hope this help!

Loïc Grevillot, Ph.D. Student
PARTNER project, CERN

IBA Particle Therapy / Creatis-LRMN
Tel (IBA):         +32 10 487 729



2011/6/13 catarina veiga <catarinavveiga at gmail.com>

> Dear users,
>
> I am trying to use GATE on my personal computer to acquire dose deposited
> in
> a proton treatment plan. I need some good accuracy in my calculations, but
> for some of my simulations I keep having the simulation aborting, with the
> error std bad_alloc. I did some research and understand that this is
> related
> with memory problems. Is there any way to overcome this kind of issues,
> without having to reduce the number of events?
>
> Also, I use GATE V5 to do my simulations. I read that on new version V6
> there are some improvements in definition of a TPS pencil beam source. In
> particular, I am interested in how the conversion of MU to number of
> particles has been developped (for protons). Can you inform me of the name
> of the files that have the C++ for this so I can take a look at the code?
>
> Kind regards,
> Catarina Veiga
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