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Forum: Fields: Magnetic and Otherwise
Re: Question Stepsize Underflow in Stepper (Evan Adamek)
Re: None Re: Stepsize Underflow in Stepper (John Apostolakis)
Re: None Re: Stepsize Underflow in Stepper (Evan Adamek)
Date: 16 Jul, 2013
From: Gumplinger Peter <Gumplinger Peter>

Hi Evan,

Can you please compare your source code with that of example:


(of version (9.6.p02)

There was no gravity field capability in 9.3 so there may be a duplication and/or incompatibility between your sources and the 9.6 repository.


On Tue, 16 Jul 2013 23:21:42 GMT, Evan Adamek wrote:

> Hi John. Thanks for the advice. I tried your suggestion to comment out
> the ifdef G4DEBUG_FIELD lines, but it didn't result in any changes in
> the output. I also tried setting some output flags for the field
> calculations. I was able to determine that the forces from the EM fields
> that the UCN encounter are identically zero, as they are supposed to be.
> I am a bit lost trying to track down the gravitational field
> incorporation, however.
> The code was initially written for Geant4.9.3. However, before
> transferring the code to my current computer, Geant was upgraded to the
> current version, 4.9.6.p02. It worked on that computer, so I don't think
> there's a version incompatibility.

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1 Note: Re: Stepsize Underflow in Stepper   (Evan Adamek - 17 Aug, 2013)
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