|Message: Re: Force interaction in a volume||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, Forcing an interaction is doable since 10.0. Please have a look at example/extended/biasing/GB02 . You may also scale the cross-section by a large factor (in what case, please see GB01). Likely this example GB02, mimicing the force collision scheme of MCNP, provides more than you need (ie : it has a force collision part + a force uncollided one, to cover all cases, but you may need only the collision part). Adapting this example to better fit your need is doable. Please let us know if you would be interested by this. Also, Geant4 does not have neutrino interactions yet. Do you provide your own ? Marc On 07/14/2015 05:13 PM, Christophe Hugon wrote: > *** Discussion title: Event and Track Management > > Hello, I'm simulating a neutrino telescope. Therefore it is in water in > which you have weak interaction of neutrino. But the problem is that the > cross section is extremely low, thus I would have to generate a > tremendous number of neutrino to get only one event. My question is: Is > it possible to force the interaction of the neutrinos in the target > material (sea water)? I read in the forum that it was in development, > but not yet available. > > The way I though was: Generate a neutrino in the target material and > force to do the next step discrete process interaction immediately, i.e. > without propagation (which could be light years). Is there a (maybe > nasty but) simple way such as putting the transportation speed at 0? > > Thank you for your help > > ------------------------------------------------------------- > Visit this GEANT4 at hypernews.slac.stanford.edu message (to reply or unsubscribe) at: > http://hypernews.slac.stanford.edu/HyperNews/geant4/get/eventtrackmanage/1267.html