|Message: Re: What is a rigth way to construct regular geometry structures?||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)|
Hello John, Thanks for quick reply, It is all clear for me now about visualisation and tracking efficiency. > However, having said that, I see no reason why the tracking should not > be effectively identical. But I am not qualified to judge this. Could > you please post more details of the different results of simulation? I agree with you, that geometry builded by this two way must be identical for particle tracking. So, more information about simulation: I simulate propagation of positrons though absorbers which presented by regular structure. Typical simulation geometry like this: --------  --------  --------  -> [*] --------  B --------  --------  --------  Source of e+ Absorber Detector -> Also setup placed in magnetic field (B ). A purpose of simulation is count of amount of positrons arriving to detector. This is results: (for two types of cell of regular structure - hexa and quad, and two ways of geometry building - by multiple unions and multiple placements). Geometry_type multiple_unions multiple_placements hexa cells 863 568 quad cell 812 505 As you can see difference is ~ 50%. I perform simulation by geant4.8.1.ref02 from CERN AFS. Also I can send you source code for more details. -- Best regards, Anton mailto:email@example.com
|Inline Depth:||Outline Depth:||Add message:|