|Message: Re: Hadrontherapy::Bragg Peaks above 200MeV Proton||Not Logged In (login)|
Click on the Forum title, e.g. on the "Forums by Category" page, to read a sequence of postings to the Forum and its threads all in one page. If you are only interested in one thread or the thread following a specific posting, click the thread or the posting, which takes you to a smaller page, which contains only the part you are interested in and may be easier to navigate.
Messages are "chained" if there are only replies at the first level, i.e. 1/1.html, 1/1/1.html etc. In case of "chained" messages the message number is replaced by the icon and there is no indentation.
Inline: Display the subject line only or also the text of the posting(s); for the choice "All" the "Outline" choices are switched off.
|1||0||1||no text / full text of posting|
|2||1||All||text for level 1 only / text for All postings|
Outline: Choose the depth of the posting thread, successive toggle controls provide increasing detail.
|1||2||1||2 levels / 1 level (original posting)|
|2||3||2||3 levels / 2 levels|
|3||3||All||3 levels / all levels (all postings)|
On Thu, 11 Mar 2010 22:24:53 GMT, G.A.P.Cirrone wrote:
> On Thu, 11 Mar 2010 19:04:00 GMT, Rivas Javier wrote: > > > Hallo everyone, > > > > At this momment, Im tryinng to work with tutorial Handrontherapy (in the > > Geant4.9.3 environment), > > > > but when I try to change (only) the energy mean from 63 to 200 > > MeV@Proton , the results (the Dosedistribution) show me a Platteu region > > Can you say me, what is wrong ? Do i have to change other parameters as > > well? > > > > Attachment: > > http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2010/03/11/11.01-16572-000p01818d.jpg > > > > Dear Javier, > > the problem of your result is probably related to the dimensions of the > phantom you are using to collect the dose. The default dimensions of the > phantom are 40 x 40 x 40 mm that are optimal for proton beams of energy > not greater then 70 MeV. > > In the file macro/detectorGeometry.mac you can find messenger to change > the position, the dimensions and the number of the voxels of the > phantom. Moreover take in mind that the output file gives the number of > the slice (or voxel) and not the depth. So you have to convert to obtain > a depth depending on the slice dimension you are using. > > Hoping this can help, > > Pablo Cirrone >
I forgot another point: what you are plotting is an histogram defined with a wrong range for you energy (but good for the 70 MeV). Please give a look in the AnalysisManager file and in the characteristics of the used histogram.
regards, Pablo Cirrone
|Inline Depth:||Outline Depth:||Add message:|