|Message: Re: low-energy tracks incorrectly stopped||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)|
It is true that Vacuum (=G4_Galactic) has non-zero density, but that is not the problem (if it were, high-energy tracks would also do this; they don't). The track is stopped right at the end of the first step (presumably track->status set to fStopButAlive). Stopped mu+ decay, and stopped e+ annihilate.
My code puts a StepLimiter process onto every particle, and no matter what value I give it this happens at the end of the first step. As this happens when the limiting process is either StepLimiter or Transportation (reached a boundary), I conclude this is done somewhere in the stepping code, not in any process.
My code never sets track-status to fStopButAlive, so I need to know where in the Geant4 tracking code that this has been added, and how I can avoid it. Presumably there is a test on kinetic energy or velocity, as higher-energy tracks do not do this.
I would also like to understand why this was done....
|Inline Depth:||Outline Depth:||Add message:|