Home » PANDA » PandaRoot » Tracking » GENFIT for transverse momenta < 200 GeV/c strange?!
Re: GENFIT for transverse momenta < 200 GeV/c strange?! [message #11203 is a reply to message #11194] |
Fri, 19 November 2010 16:22   |
Lia Lavezzi
Messages: 291 Registered: May 2007 Location: Torino
|
first-grade participant |
 From: *pv.infn.it
|
|
Hi David and all others,
I made some tests and I really think the problem is the cut in GeaneTrackRep for low momentum particles: though your starting momentum is not too low (the limit is 100 MeV/c of total momentum), the particle loses energy and often falls in that exception at a certain point.
Since the cut was put there when GEANE was unstable, but now several fixes have been added, I think we could get rid of it.
I uploaded a version of GeaneTrackRep with that cut commented out, so that, if we see that it still crashes, it will be easily restored.
I tried a run without that cut and everything worked fine. Now the Kalman filter is better than the Helix, so I am confident that we can keep GeaneTrackRep without the cut.
Can you please update your GenfitTools and retry to run the events to confirm/deny my results?
Have a nice week end,
Lia.
-
Attachment: momtransv.ps
(Size: 9.80KB, Downloaded 285 times)
|
|
|
Goto Forum:
Current Time: Mon Feb 10 12:11:33 CET 2025
Total time taken to generate the page: 0.00821 seconds
|