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Re: problem in retriving data from runDemo output [message #6153 is a reply to message #6152] Wed, 26 March 2008 10:35 Go to previous messageGo to previous message
Mohammad Al-Turany is currently offline  Mohammad Al-Turany
Messages: 518
Registered: April 2004
Location: GSI, Germany
first-grade participant
From: *gsi.de
Hallo Sebastian,

Quote:

I can not think about many applications where you need track parameters without having the ability to propagate them.


This is true, but usually you have one or more propagator which you use to propagate your track parameters! and these should not be inside the track representation! otherwise with this logic the track should have also the field values every where and the geometry!
As I said normally you have a propagator(s) which knows about the geometry and field and can propagate track parameters to any where inside the geometry, given back the new track parameters and covariant matrix at the new point, plan,..etc. At least that how it works in CBM, Alice and Hades. The other way (That the track know how to propagate him self) will only create problems!

regards

Mohammad
 
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