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Re: Geane crashes in PndPidCorrelator [message #10355 is a reply to message #10336] Sun, 07 March 2010 16:31 Go to previous messageGo to previous message
Jens Sören Lange is currently offline  Jens Sören Lange
Messages: 193
Registered: June 2005
first-grade participant
From: *web.vodafone.de
Hi all, a short update.

Martin identified the event which crashed Geane.

N Id Ist M1 M2 DF DL px py pz E t
x y z
0 443 2 -1 -1 1 3 0.00000000 -0.00000000 4.06565876
5.11079103 0.00000000 0.00000000 0.00000000 0.00000000
1 -11 1 0 0 -1 -1 -0.87957973 -0.34001792 0.31825857
0.99526954 0.00000000 0.00000000 -0.00000000 0.00000000
2 11 1 0 0 -1 -1 1.11174623 0.42895594 3.66460233
3.85347809 0.00000000 0.00000000 -0.00000000 0.00000000
3 22 1 0 0 -1 -1 -0.23216651 -0.08893803 0.08279787
0.26204340 0.00000000 0.00000000 -0.00000000 0.00000000


There is nothing particular in it.

Even more, if one processes it again (Martin tried 5x),
then suddenly it does not crash Geane anymore.

So, a preliminary conclusion:

1.) Tracks with muons seem _not_ to crash Geane.
2.) Tracks with electrons seem _not_ to crash Geane,
if photos is switched off in EvtGen.
3.) Tracks with electrons seem to crash Geane,
if photos is switched on in EvtGen.
4.) The crashes in Geane seem to have a non-deterministic
component. If the event is re-processed, then the Crash
might not occur again.

(These observations are surprising).

Soeren and Martin

 
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