|Message: Re: creating volumes with 'holes' using G4AssemblyVolume||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)|
I checked the volume overlap before, but did it again to make sure, there are no overlaps when making the imprint of the assembly (each added volume was made with a non-vacuum material on the logical volume (whole_log with material set to vacuum), or any overlap when placing whole_log. I have played with the parameters a little more, and I think that maybe my understanding of how the code functions is off. The reason I thought that the assembly wasn't working was that I had set whole_log as a sensitive detector, and that at every hit, I took the pre- and post- step points and asked it to print out the material at that point, but for all the points it was vacuum, (the material of whole_log), and not that of the mesh substrate (non-vacuum material). However, by making the mesh thicker the difference in scattering through the mesh is very apparent, so the particles must be noticing that they are going through something which is not vacuum, but still saying that it is the material of whole_log, and not that of the imprinted physical volumes made of some non-vacuum material... perhaps this is a correct interpretation of what is going on... ??? So now the question is how do I find out that a particular track is going through the mesh hole and not the substrate if the step points will always say that the material is that of whole_log, and that the physical volume at each step is that of the placed whole_log, and that the energy deposit at each step is 0, because the material of whole_log is vacuum.... Am I going about this the wrong way??? Can I use something else, like a G4SubtractionVolume, or something so that I can somehow distinguish which particles go through the hole and which through the substrate??? Thanks for the help!!! Cheers, Mario
|Inline Depth:||Outline Depth:||Add message:|