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Re: Bug in GenfitTrack2PndTrack [message #9311 is a reply to message #9307] Thu, 03 September 2009 16:05 Go to previous messageGo to previous message
Lia Lavezzi
Messages: 291
Registered: May 2007
Location: Torino
first-grade participant

From: *47-151.net24.it
It could be due to the protection for the low momenta in the extrapolate function of GeaneTrackRep:
// protect against low momentum:
  if(fabs(state[0][0])>10){
    FitterException exc("GeaneTrackRep: PROTECT AGAINST LOW MOMENTA",__LINE__,__FILE__);
    exc.setFatal();
    throw exc;
  }

Since when you call gtr->getMom(lastPlane) you perform an extrapolation and in this case q/p = 10.19 the extrapolation could fail.

You could try to comment out the lines of the protection against low momentum to see if the problems disappears.
Ciao,
Lia.
 
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