GSI Forum
GSI Helmholtzzentrum für Schwerionenforschung

Home » PANDA » PandaRoot » Bugs, Fixes, Releases » Crash in genfit/geane
Re: Crash in genfit/geane [message #9260 is a reply to message #9259] Fri, 28 August 2009 20:02 Go to previous messageGo to previous message
StefanoSpataro is currently offline  StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino
first-grade participant

From: *52-82-r.retail.telecomitalia.it
Under suggestion of Lia, I have modified the geane parameters for the material "air", adding the following lines in gconfig/Geane.C:

TGeoMedium *o=gGeoManager->GetMedium("air");
o->SetParam(3, .4); 


to change the maximum angle of deflection inside the magnetic field.
In this case the analysis proceeds without errors. If I use larger values, such as 0.5 or greater, then I have the crash exactly at the same pointx.
I don't know if maybe it could be good to change this option for the common geane parameters, or if this is just a hard fix...

ADDED 29/08/09
I have tried with a different data set and I have followed in the same problem,. This time I had to go to 0.05 in orer to get rid of that crash. And, once I am applying such lower cuts, I have seen that there are more warnings such as:

FitterException thrown with excString:
cov_is_zero
in line: 257 in file: /home/stefano/july09/pandaroot/genfit/Kalman.cxx
with fatal flag 0
FitterException Info Output
===========================
===========================
FitterException thrown with excString:
GEANE propagation failed
in line: 272 in file: /home/stefano/july09/pandaroot/trackrep/GeaneTrackRep.cxx
with fatal flag 1
FitterException Info Output
===========================
===========================

Then maybe gendoit is skipping those tracks/reco hits.

[Updated on: Sat, 29 August 2009 14:19]

Report message to a moderator

 
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: problems with new config.sh
Next Topic: Problems with integer FairTrackPar charge
Goto Forum:
  


Current Time: Tue Jul 16 10:37:54 CEST 2024

Total time taken to generate the page: 0.00797 seconds