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Forum: Analysis
Re: Question use Geant4E for Kalman (Jan Balewski)
Re: Idea Re: use Geant4E for Kalman (Vladimir Ivanchenko)
Date: 04 Mar, 2013
From: Jan Balewski <Jan Balewski>

Hi Vladimir,

over last few weeks I tried to understand how geant4e works. I have encountered several issues, submitted 4 tickets:

http://bugzilla-geant4.kek.jp/show_bug.cgi?id=1448
http://bugzilla-geant4.kek.jp/show_bug.cgi?id=1447
http://bugzilla-geant4.kek.jp/show_bug.cgi?id=1435
http://bugzilla-geant4.kek.jp/show_bug.cgi?id=1453

None of them triggered any human response.

Furthermore, I found this attempt of use of G4E for Belle II experiment: http://www-ekp.physik.uni-karlsruhe.de/pub/web/thesis/iekp-ka2012-18.pdf

Author struggles (1/3 of his thesis relates to Geant4e) and concludes on page 51, that: " [problems with covariance matrix propagation lead to ] several serious problems occurred, making it impossible to complete a properly running version, which led to the fi nal abandonment of this project."

Further more he says (page 54) that a PHENIX member tried to use G4E and was not able to get it to work either.

The general feeling is Geant4E is not used by anyone in practice.

Given my experience so far I'm concerned in investing more of my time in to study of usability of Geant4E for my experiment.

Could you contact me with anyone who knows how Geant4E works and who could say it does work *correctly* for him/her?

Thanks

Jan

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