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Re: Bug in GenfitTrack2PndTrack [message #9311 is a reply to message #9307]

Thu, 03 September 2009 16:05

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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[Message index]

		Bug in GenfitTrack2PndTrack By: StefanoSpataro on Mon, 31 August 2009 14:19
		Re: Bug in GenfitTrack2PndTrack By: StefanoSpataro on Tue, 01 September 2009 15:20
		Re: Bug in GenfitTrack2PndTrack By: Lia Lavezzi on Wed, 02 September 2009 12:11
		Re: Bug in GenfitTrack2PndTrack By: Anonymous Poster on Wed, 02 September 2009 14:45
		Re: Bug in GenfitTrack2PndTrack By: StefanoSpataro on Wed, 02 September 2009 14:48
		Re: Bug in GenfitTrack2PndTrack By: Lia Lavezzi on Wed, 02 September 2009 15:00
		Re: Bug in GenfitTrack2PndTrack By: StefanoSpataro on Wed, 02 September 2009 15:05
		Re: Bug in GenfitTrack2PndTrack By: StefanoSpataro on Thu, 03 September 2009 11:38
		Re: Bug in GenfitTrack2PndTrack By: Lia Lavezzi on Thu, 03 September 2009 13:11
		Re: Bug in GenfitTrack2PndTrack By: StefanoSpataro on Thu, 03 September 2009 15:28
		Re: Bug in GenfitTrack2PndTrack By: Lia Lavezzi on Thu, 03 September 2009 16:05
		Re: Bug in GenfitTrack2PndTrack By: StefanoSpataro on Thu, 03 September 2009 16:18
		Re: Bug in GenfitTrack2PndTrack By: Lia Lavezzi on Thu, 03 September 2009 16:48
		Re: Bug in GenfitTrack2PndTrack By: Anonymous Poster on Thu, 03 September 2009 17:08
		Re: Bug in GenfitTrack2PndTrack By: Lia Lavezzi on Thu, 03 September 2009 16:51
		Re: Bug in GenfitTrack2PndTrack By: StefanoSpataro on Thu, 03 September 2009 16:55
		Re: Bug in GenfitTrack2PndTrack By: Johannes Rauch on Wed, 13 July 2011 18:13

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