GSI Forum
GSI Helmholtzzentrum für Schwerionenforschung

Home » PANDA » PandaRoot » Tracking » Lhe tracking results: reconstruction error for transverse momenta <= 1 GeV/c, all five particles
Re: Lhe tracking results: reconstruction error for transverse momenta <= 1 GeV/c, all five partic [message #11231 is a reply to message #11228] Wed, 24 November 2010 13:57 Go to previous message
David Pohl is currently offline  David Pohl
Messages: 18
Registered: October 2009
Location: FZ Juelich
occasional visitor

From: *ikp.kfa-juelich.de
Hi Stefano,

okay. This means that the Kalman task does not take the bremsstrahlung correctly into account?

The x-y plane plots for the LheHits are not to easy to judge.
I think to recognize cirlces is not easy for the human brain Razz .

On the first view one can assume that the kaons for 200 MeV/c transverse momenta do not lie on a circle.
Especially in the outer regions:
index.php?t=getfile&id=6206&private=0

Corresponding reconstructed transverse momenta:
index.php?t=getfile&id=6207&private=0

For 300 MeV/c transverse momenta the kaon tracks do not look that bent:
index.php?t=getfile&id=6208&private=0

Corresponding reconstructed transverse momenta:
index.php?t=getfile&id=6209&private=0

For electrons its an issue of the Kalman task I think:
index.php?t=getfile&id=6212&private=0

Corresponding reconstructed transverse momenta:
index.php?t=getfile&id=6213&private=0

Honestly I am at the moment quite busy with writing my thesis Confused and have no time to do dedicated "bug search".
I just wanted to show this issue to inform the tracking experts.

greetings,
David

p.s.: the plots in conformal mapping space are better to judge:
little bit bent
index.php?t=getfile&id=6214&private=0
straight line
index.php?t=getfile&id=6215&private=0

[Updated on: Wed, 24 November 2010 14:21]

Report message to a moderator

 
Read Message
Read Message
Read Message
Previous Topic: GENFIT for transverse momenta < 200 GeV/c strange?!
Next Topic: PndTrack array available
Goto Forum:
  


Current Time: Wed Dec 01 14:31:49 CET 2021

Total time taken to generate the page: 0.02408 seconds