GSI Forum
GSI Helmholtzzentrum für Schwerionenforschung

Home » PANDA » PandaRoot » Tracking » Problem with low momentum Pion
Problem with low momentum Pion [message #6217] Thu, 03 April 2008 17:53 Go to previous message
Vanniarajan Suyam Jothi is currently offline  Vanniarajan Suyam Jothi
Messages: 35
Registered: October 2007
Location: Groningen
continuous participant

From: *KVI.nl
Hello Andrea,
I was Implementing a tracking mu- of 1 Gev Momenta by taking the momenta and position from the Tpc track to the volume in Emc using the PropagatetoVolume call of Geane. The tracking has failed for the small momenta below 0.5 Mev of q/p < -2.0. As you see here it fails at TRPROP call. Can you tell me where is the problem in this case?

Is it possible to pass a flag for propagation failure instead of such a failure?




fEnd =
0xb107c60
Position : (-57., -3.2, -22.)
Angles : Lambda = -0.37, Phi = -2.9
q/p = -1.0
fCovMatrix[0] = 0xb107c60 7.6e-05
fCovMatrix[1] = 0xb107c60 2.4e-05
fCovMatrix[2] = 0xb107c60 -3.3e-06
fCovMatrix[3] = 0xb107c60 -0.00013
fCovMatrix[4] = 0xb107c60 0.00042
fCovMatrix[5] = 0xb107c60 2.2e-05
fCovMatrix[6] = 0xb107c60 -1.8e-06
fCovMatrix[7] = 0xb107c60 -5.8e-05
fCovMatrix[8] = 0xb107c60 0.00038
fCovMatrix[9] = 0xb107c60 2.2e-06
fCovMatrix[10] = 0xb107c60 3.9e-05
fCovMatrix[11] = 0xb107c60 -3.1e-05
fCovMatrix[12] = 0xb107c60 0.00076
fCovMatrix[13] = 0xb107c60 -0.00099
fCovMatrix[14] = 0xb107c60 0.0067
exec CbmGeaneTrLheTpcEmc : 1/29
exec1/29
exec1/29
exec1/29
fStart =
0xb107af0
Position : (5.2, -17., -6.6)
Angles : Lambda = -0.36, Phi = -1.2
q/p = -2.2
fCovMatrix[0] = 0xb107af0 0.00027
fCovMatrix[1] = 0xb107af0 3.7e-05
fCovMatrix[2] = 0xb107af0 -4.7e-05
fCovMatrix[3] = 0xb107af0 0.0
fCovMatrix[4] = 0xb107af0 0.0
fCovMatrix[5] = 0xb107af0 1.8e-05
fCovMatrix[6] = 0xb107af0 -8.1e-06
fCovMatrix[7] = 0xb107af0 3.5e-13
fCovMatrix[8] = 0xb107af0 5.4e-14
fCovMatrix[9] = 0xb107af0 2.7e-05
fCovMatrix[10] = 0xb107af0 4.6e-09
fCovMatrix[11] = 0xb107af0 7.0e-10
fCovMatrix[12] = 0xb107af0 1.6e-07
fCovMatrix[13] = 0xb107af0 -1.3e-07
fCovMatrix[14] = 0xb107af0 9.8e-07
Propagate Helix to Volume


*** Error in subr. TRPROP 3 called bysubr. ERPROP



*** Break *** floating point exception
Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
Attaching to program: /proc/22782/exe, process 22782
[Thread debugging using libthread_db enabled]
[New Thread -1223530816 (LWP 22782)]
0xffffe410 in __kernel_vsyscall ()
error detected on stdin
The program is running. Quit anyway (and detach it)? (y or n) [answered Y; input not from terminal]
Detaching from program: /proc/22782/exe, process 22782
Root >
root [1] .q







Cheers,
Vanni
 
Read Message
Read Message
Read Message
Previous Topic: GeaneTrackRep with GEANE.
Next Topic: GENFIT objects in the ROOT Browser
Goto Forum:
  


Current Time: Tue May 21 07:21:34 CEST 2024

Total time taken to generate the page: 0.00973 seconds