GSI Forum
GSI Helmholtzzentrum für Schwerionenforschung

Home » PANDA » PandaRoot » Tracking » Revised CbmGeaneUtil, CbmGeanePro and CbmTrackParP.
Re: Revised CbmGeaneUtil, CbmGeanePro and CbmTrackParP. [message #6861 is a reply to message #6857] Mon, 09 June 2008 14:33 Go to previous messageGo to previous message
Sebastian Neubert is currently offline  Sebastian Neubert
Messages: 282
Registered: March 2006
Location: Munich
first-grade participant

From: *adsl.alicedsl.de
Hi Lia!

I am working on an update for genfit and I have not checked in things (because it will effect some packages I have no access to). So unfortunately I cannot supply you with the exact version of the macro I am using (recotasks/demo/runDemo.C).

I will check in my stuff in the next days, but I would like to clarify this point before if possible.

The change in sign happens during the extrapolation after I have updated the covariance matrix in the previous Kalman step.

Could it be that I produce ill-conditioned covariances in the update step? Have you ever seen anything like that?

Let me point out that this happens for all tracks in my example - it is not a very special case.

I will also try some more things but maybe you have an idea what could be problematic about the covariances...

Cheers!
Sebastian.


Sebastian Neubert
Technische Universität München
Department Physik E18
sneubert@e18.physik.tu-muenchen.de
tel: +49-8928912592
 
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: Revised genfit
Next Topic: floating point exception in geane
Goto Forum:
  


Current Time: Thu Jul 18 13:26:37 CEST 2024

Total time taken to generate the page: 0.00829 seconds