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Question Bragg peak of 330Mev/u of carbon using Hadrontherapy example 

Forum: Medical Applications
Date: 21 Apr, 2010
From: Morad Hamad <Morad Hamad>

Dear users/developers,

when I ran default proton_therapy.mac I get a good Bragg peak which is agreeing with the experimental data includes inside the code. However, when I try to use ion_therapy.mac to compare it with 330 Mev/u of carbon12 from GSI, which has an experimentally a peak at about 20 cm in water I get a peak at about 6 cm, also I get the same depth when using energy of 135 Mev/u.
I only changed the energy inside ion_therapy.mac to be 330 Mev/u once and 135 Mev/u other.
I still don't know what is the physical meaning of sigmaenergy variable.

Is the error because I don't use GSI synchrotron geometry? Or that I have to change other things inside either the code or the macro files?

Please see the attached Bragg peak for 330 Mev/u of carbon-12.

I will be appreciated for your assistance to solve the problem.

Respectfully,


   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2010/04/21/01.29-26308-330MevOfCarbon.jpg
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2010/04/21/01.29-26380-330MevExperimental.jpg

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1 None: Re: Bragg peak of 330Mev/u of carbon using Hadrontherapy example   (G.A.P.Cirrone - 24 Apr, 2010)
(_ Question: Re: Bragg peak of 330Mev/u of carbon using Hadrontherapy example   (Morad Hamad - 29 Apr, 2010)
(_ More: Re: Bragg peak of 330Mev/u of carbon using Hadrontherapy example   (Morad Hamad - 29 Apr, 2010)
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