|Message: Re: Muon Ionization spin problem||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)|
> > After first transportation Pol_Z goes from -1 to 0! > > What am I missing? >
I might be way off base here, but it sounds like you might not be using the right Equation of Motion or perhaps you haven't told the stepper to evolve enough equations. Here's an excerpt from some code I use to evolve muon spin in the presence of combined EM fields:
equation = new G4EqEMFieldWithSpin(field); stepper = new G4ClassicalRK4(equation, 12); // modifies spin, so 12 driver = new G4MagInt_Driver(0.01*mm, stepper, stepper->GetNumberOfVariables()); chord = new G4ChordFinder(driver);
This may not be the optimal way to do things, but it seems to work for me. I hope that this helps you out.
|Inline Depth:||Outline Depth:||Add message:|