Home » PANDA » PandaRoot » Tracking » Running the Kalman on the Mvd
Running the Kalman on the Mvd [message #6591] |
Thu, 24 April 2008 11:54 |
Ralf Kliemt
Messages: 507 Registered: May 2007 Location: GSI, Darmstadt
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first-grade participant |
From: 141.30.85*
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Hi all,
I started to try out genfit on MvdHits. After some issues concerning the Mvd package itself I ran into some fitting problems which don't tell me much. Here we go:
- I checked in the stuff into rev. 2589 (and 2588).
- I run the macros in macro/mvd/Tracking
- The simulation does 1GeV protons with Mvd & Field
- The digi & hitreco runs
- MC Trackfinding runs
Anyway somehow the Kalman cannot fit the tracks I make. Here you have some detailed output (I uncommented the info output in the Kalman class).
Hopefully someone can help...
Ralf.
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PndMvdKalmanTask::Exec
-I- PndMvdKalmanTask: contains 1 Tracks.
Detailed Debug info on the tracks:
TrackCand no. 0 has 6 hits.
[ ihit | detid | index ]
[ 0 | 3 | 0 ]
[ 1 | 3 | 1 ]
[ 2 | 3 | 2 ]
[ 3 | 4 | 0 ]
[ 4 | 4 | 1 ]
[ 5 | 4 | 2 ]
starting track0
-I- PndMvdRecoHit::PndMvdRecoHit(PndMvdHit*) called.
Mvd hit in detector 1_1/34_0/119_1/118_2/98_14/92_1/90_1/89_1/ at (1.60909, 0.271733, 1.94354) cm with 46929.8 e, Cluster No. 0
o: 2.11 0.656733 1.94354
u: 0 1 0
v: -1 0 0
-I- PndMvdRecoHit::PndMvdRecoHit(PndMvdHit*) called.
Mvd hit in detector 1_1/34_0/102_1/101_3/98_1/92_1/90_1/89_1/ at (4.16446, 0.653887, 5.0215) cm with 92495.9 e, Cluster No. 1
o: 4.08241 1.43459 4.5
u: -0.104528 0.994522 0
v: 0 0 1
-I- PndMvdRecoHit::PndMvdRecoHit(PndMvdHit*) called.
Mvd hit in detector 1_1/34_0/66_2/65_12/59_1/57_1/56_1/ at (4.9599, 0.758694, 5.975) cm with 32364.3 e, Cluster No. 2
o: 4.10249 -1.00282 5.975
u: 0.707107 0.707107 0
v: -0.707107 0.707107 0
-I- PndMvdRecoHit::PndMvdRecoHit(PndMvdHit*) called.
Mvd hit in detector 1_1/34_0/80_1/78_1/77_4/75_29/72_1/71_1/ at (7.89362, 1.08679, 9.48283) cm with 122466 e, Cluster No. 0
o: 7.67364 1.9824 10.65
u: 0 0 1
v: 0.238533 -0.971134 0
-I- PndMvdRecoHit::PndMvdRecoHit(PndMvdHit*) called.
Mvd hit in detector 1_1/34_0/80_1/79_1/77_9/75_29/72_1/71_1/ at (7.44033, 1.04598, 8.9416) cm with 66616.9 e, Cluster No. 2
o: 7.4256 -0.00891832 10.65
u: 0 0 1
v: -0.0139622 -0.999903 0
-I- PndMvdRecoHit::PndMvdRecoHit(PndMvdHit*) called.
Mvd hit in detector 1_1/34_0/86_1/83_1/82_5/81_1/72_2/71_1/ at (12.4543, 1.43929, 14.9139) cm with 65711.7 e, Cluster No. 4
o: 12.3431 2.06957 16.7752
u: 0 0 1
v: 0.173648 -0.984808 0
6 hits in track 0
starting fit
Kalman::processTrack::Starting track
3x1 matrix is as follows
| 0 |
------------------
0 | 1.609
1 | 0.2717
2 | 1.944
Process hit #0 of rep #0
.DetPlane: O(2.11,0.656733,1.94354) u(0,1,0) v(-1,0,0)
++++++++++++++ do prediction: ++++++++++++++++
s before extrapolation: 0
s_to: 1.94354
unew[2]=z=1.94354s after extrapolation: 0
s before extrapolation: 0
s_to: 1.94354
unew[2]=z=1.94354s after extrapolation: 0
s before extrapolation: 0
s_to: 1.94354
unew[2]=z=1.94354s after extrapolation: 0
s before extrapolation: 0
s_to: 1.94354
unew[2]=z=1.94354s after extrapolation: 0
s before extrapolation: 0
s_to: 1.94354
unew[2]=z=1.94354s after extrapolation: 0
s before extrapolation: 0
s_to: 1.94354
unew[2]=z=1.94354s after extrapolation: 0
5x1 matrix is as follows
| 0 |
------------------
0 | 0
1 | 0
2 | 0
3 | 0
4 | 0
5x5 matrix is as follows
| 0 | 1 | 2 | 3 | 4 |
----------------------------------------------------------------------
0 | 0 0 0 0 0
1 | 0 0 0 0 0
2 | 0 0 0 0 0
3 | 0 0 0 0 0
4 | 0 0 0 0 0
++++++++++++++++++++++++++++++++++++++++++++++
Error in <TDecompLU::DecomposeLUCrout>: matrix is singular
Error in <TDecompLU::InvertLU>: matrix is singular, 0 diag elements < tolerance of 2.2204e-16
FitterException thrown with whatString:
cannot invert covsum in Kalman Gain - det=0
in line: 265 in file: /home/ralfk/Pandaroot/pandaroot/genfit/Kalman.cxx
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